Güntner Competence Controls - guentner.eu · core competence lies in the development and...

ControlsGüntner Competence

“We cater to our customers’ needs and our control components for refrigeration systems ensure the best possible energy efficiency, stable system operation, maximum operational reliability and service life.”

Intelligence for Heat Exchangers with AC or EC Fans

Jörg Köcher, Head of Controls division

In addition to manufacturing high-quality heat exchangers, our core competence lies in the development and production of con-trol components and switch cabinets for heat exchangers. For years we have been delivering efficient, top-quality controllers and switch cabinets, ideally tailored to the functions of Güntner equipment, taking into account not only the heat exchanger and the associated fans, but the system as a whole.

Our customer’s needs are our primary concern. The reliability and energy efficiency of our equipment goes without saying. Naturally, our equipment is developed with a view to simplifying maintenance and keeping it user-friendly. Our highly qualified

staff ensure that the technologies implemented are always state-of-the-art. All controls components are automatically configured and dimensioned by the Güntner Product Calculator (GPC) to harmonise with the heat exchanger, thereby providing you with a fully configured plug-and-play device.

Our Recipe for Success:Future-oriented development which accommodates our customers’ needs. Optimized production processes for excellent quality. Achieving our highest goal: maximum customer benefit.

2 3Güntner Competence Controls

What are the Advantages of the GMM System?

The Güntner Motor Management GMM system is implemented in all Güntner controllers, making the advantages of the GMM available to you for nearly all applications.The GMM systems ensure the following:

Energetically optimal operation of the heat exchanger

The GMM is available for AC and EC fans; various technologies are used. The GMM achieves the best possible level of effective-ness for heat dissipation and consequently increases the cost-effectiveness of the refrigeration system.

Maximum service life of heat exchanger and fans

The sophisticated control technology enables highly uniform op-eration of the fans, which minimises wear and tear: on the one hand, by special control algorithms on the controller side, and on the other, with specialised filter technology and top-quality power electronics.

Simple handling during commissioning and system operation (plug-and-play)

The fans and power components are already fully parameterised with the GMM. The GMM’s clear text display allows for transpar-ent and simple operation of the various functions and displays operational signal messages and error signal messages. The sig-nal-display language can be selected in the controller.


The Functional Areas of the Güntner Motor Management (GMM) System

Process Controlfor Energy-Optimised Operation

Increased Reliability and Transparency of System Operation

The GMM system specially developed for the Güntner heat exchangers is tailored to achieve the best possible level of effectiveness for heat dissipation: it therefore increases the cost-effectiveness of the refrigeration system.

The sophisticated technology used for the control and power components maxi-mizes the service life of heat exchanger and fans.

The GMM automatically sets the parameters for the fans and power components, thereby enabling plug-and-play operation.

The most up-to-date bus technology used in all GMM systems equips the GMM to perform the three main functions of Process Controller, Information Manager and System Manager.

The GMM adjusts the fans’ speed according to pressure or temperature, controls processes and thus creates an energy-optimised heat exchanger system.

For pressure control, the refrigerant can be selected in the display. Condensing pressure and temperature are also shown in the display.

Other settings, such as the type of refrigerant or set points, can be carried out directly via the clear text display.

GMM’s Information Manager function offers com-munication interfaces to superordinate control sys-tems and subordinate power units (e.g. frequency converters, EC fans, etc.).

It shows all key operation-related information on the display and makes it available to superordinate systems via a bus system or standard interface.This facilitates remote maintenance and makes it possible to call up information about operating sig-nals at any time.

This communication functionality increases the re-liability and transparency of system operation.

System Manager

Process Controller

Information Manager

Monitoring Facility for Unit’s Entire Life Cycle

The GMM monitors all operation-relevant components of the heat exchanger. With AC fans, for example, this includes the fan’s thermocontacts, the power electronics and the switch cabinet components. The parameters for the power components are set automatically.The GMM manages the EC fans during commissioning, system operation and servicing.

If a power component or an EC fan has to be replaced during servicing, all parameters are automatically programmed. This plug-and-play-capable system automatically executes all programming according to the respective design point of the heat exchanger and displays detailed information in real time.


Güntner Motor ManagementOperating Modes

GMM systems are very flexible in terms of application; 5 different operating modes are available. Irrespective of whether the require-ments are automatic control to specified setpoints, a slave signal taken over from a superordinate control system, or a controller-inherent proportional-integral control, the GMM has everything under control.

1. Auto internal:

Automatic control to internally set setpoint.

* PID: Proportional-Integral-Differential

2. Auto external analogue:

Automatic control to setpoint that is pre-set externally via analogue input.

4 - 20mA

3. Auto external BUS:

Automatic control to setpoint that is pre-set externally via BUS.

Auto Mode Automatic Control of GMM with PID*:

1. Slave external analogue:

No internal control system is active – the control value that is pre-defined via analogue input is converted to a rotating field or an adjusted control signal and is communicated directly to the fans.

2. Slave external BUS:

No internal control system is active – the control value that is pre-defined via BUS is converted to a rotating field or an adjusted control signal and is communicated directly to the fans (slave signal).

Slave ModeSlave Signal from a Superordinate Controller:

circuit stage/controlled rotating field(AC, GMM sincon®)





controlled valueBUS(EC, GMM EC)





AC fan

AC fan

AC fan

AC fanAC fan

EC fan

EC fan

EC fan

EC fanEC fan

cont

rolle

d va

lue

setp

oint

setpoint

cont

rolle

d va

lue

setp

oint

4 - 20mA

option

analogueanalogue

directtransmission

directtransmission


Integration

GMM can easily be integrated into the customer’s system. There are five different operating modes: Three automatic inter-nal control modes and two slave modes.

External control signal

In slave mode the control signal can be given via a superordi-nate control system.

Bypass function

Serves to switch the fans from automatic to emergency operat-ing mode when malfunctions occur in order to ensure continued heat dissipation.

Night limit

The night limit acts as sound reduction. The fan speed is re-duced via an external signal or the internal time programme (not with GMM step).

Maintenance cycle

During prolonged downtimes, the fans are operated at short pre-set intervals (maintenance cycle) to maintain operability and prevent malfunctions.

Setpoint shifting

The setpoint can be shifted in relation to the external tem-perature in order to ensure an energetically optimised plant operation.

External predefined setpoint

An external setpoint can be predefined from the superordinate control system via analogue inputs or the bus system.

Extended threshold value function

Special functions can be activated by defining a threshold value.

Unique Functions for Refrigeration Technology

The Motor Management system developed by Güntner offers a range of special functions for refrigeration technology. Which special functions are offered?

Heating/cooling switchover

For the heat pump operating mode, the GMM systems also include an option of switching the internal control from heating to cooling mode.

Refrigerant input

The refrigerant can be selected from the clear text display. Based on the measured pressure, the GMM translates the data to the appropriate condensing temperature.

Alarm Management

All messages are stored consistently in the alarm buffer and can be read out at any time via the clear text display with date and time.

Setpoint switchover

Two setpoints can be defined, for example, to switch over be-tween summer and winter operation.

Cleaning cycle

During the cleaning cycle, the fans are operated in the reverse direction of travel for a short time to remove dirt particles from the heat exchanger packet. This function is not available in all systems.

Manual mode

To maintain heat dissipation even during malfunctions, the GMM is equipped with a hand-operated emergency operating mode.

Test and inspection station for the Güntner GMM Con-troller series: This is where new functions of GMM equipment are checked prior to serial production.


Maximum Operational Reliability

Malfunctions are both time consuming and costly. This is why operational reliability and reduced downtimes were Güntner Controls’ main focus in the development of the GMM.

The GMM offers you unique functions to ensure maximum operational reliability of your system:

With the slave-operation with backup control function, switcho-ver to an internal backup control occurs automatically when the signal from the superordinate control unit malfunctions (slave signal). This function can be used in slave external analogue (4 – 20 mA) mode or slave external bus mode.

The alarm management function ensures consistent analysis of all messages relating to the entire heat exchanger system. These include messages from the EC or AC fans, power and switch cabinet components or peripheral devices. All messages are stored in the alarm buffer and can be read out at any time via the clear text display with date and time. When alarms such as sensor malfunctions are triggered, the system automatically switches over to bypass mode (provided that this function has been activated).

With automatic parameterisation, a great deal of time can be saved during commissioning or if fans need to be replaced. The parameters for the motors are set automatically: no additional software or computer is required. This allows for a plug-and-play solution.

The bypass function ensures that the fans or power components automatically switch into emergency operating mode when there is a malfunction. This emergency operating mode permits heat exchanger operation to be maintained for as long as possible. Naturally, all bypass functions can be activated or deactivated via the GMM’s clear text display.

The extended threshold value function in slave mode enables a two-point backup control when a slave signal malfunctions. In the event of a malfunction, the fans are operated with a fixed control value and the state is transmitted via a relay at the same time.

By means of the manual operation function, the fans can be operated manually. This emergency operating mode can be use-ful in various situations; for example, during operational disrup-tions, sensor malfunctions, slave signals malfunctions or during the commissioning phase.

Güntner products in action: The GWS switch cabinets, made of stainless steel at the customer’s request, ensure energy-optimised control and low-noise operation of the 64 drycoolers (GFW series).

12 Güntner Competence Controls 13

Maximum Operating Convenience

Ease of operation is an important factor. We have developed a range of useful functions which you will find both easy to operate and very helpful.

Various bus systems are used to facilitate communication with the superordinate control system, or for integration into the building’s control technology systems. Using these bus connec-tions, all internal information such as energy consumption, set parameters, measured “as-is” values, etc. can be read. Further-more, depending on the operating mode, additional functions like automatic switching to bypass control in slave mode are available. If a connection without bus should be necessary, it is, of course, possible to obtain operating information like digital/analogue inputs and outputs via hardware signals.

In all GMM systems, two setpoints can be defined: an external signal is used to switch from one to the other. This makes it pos-sible to automatically activate different setpoints; for example, for summer or winter operation.

Depending on physical input values or control values, func-tions can be activated via a relay. Possible values include: pressure, return temperature or external temperature, or the control value of the current fan speed. The following value combinations are possible: External temperature and pres-sure; external temperature and return temperature; external temperature and control value.

The GMM systems also include an option permitting swi-tchover of the internal control system from heating to cooling mode. Both these requirements can therefore be fulfilled with only one unit, e.g. switching to heat pump operation or heat recovery operation. This function can also be used in combi-nation with the setpoint switchover.

Communication Functionality

Setpoint switchover Threshold value function

Heating / cooling switchover

To make the temperature values of the condensers available to the technician, they are automatically calculated using the measured pressure. This is done via the set refrigerant, which can be selected using the clear text display.

The standard GMM enables the speed to be reduced at night by activating the function in the controller’s menu. During operation, switchover occurs automatically via the internal time programme or the external signal.

All Güntner heat exchanger systems with GMM are delivered with pre-set control parameters. These can generally remain un-changed. In certain exceptional cases, it is necessary to adjust these parameters. This can be done easily via the clear text dis-play. The available parameters are: Kp factor, Ti reset time and Td rate time.

Each GMM has five operating language options which can be activated via the clear text display at any time. You can choose German, English, French, Spanish or Portuguese. Moreover, the units system can also be adapted to suit local requirements (SI or IP values).

Refrigerant input

Reducing sound emissions – night limit

Free definition of control parameters

International Operating Convenience

Particularly for heat exchangers with double-coil technology, two pressure or temperature values respectively can be measured. The GMM automatically selects the higher value as the input value for the internal PID controller. The fan speed therefore always depends on the higher measured value.

Max. Selection for Analogue Signals (Pressure and Temperature signals)

If the external temperature exceeds the set condensing set-point, this value cannot be reached. Consequence: The energy consumption of fans increases, since they operate at maxi-mum speed. Particularly in partial load situations, the ratio between the compressor’s energy consumption and the heat exchanger’s energy consumption must be evaluated, as there is saving potential here. A slight setpoint increase results in a slight increase in the compressor’s capacity while simultane-ously significantly reducing the fans’ energy consumption.

Setpoint shifting

The GMM is equipped with a highly flexible PID controller, which can be adjusted to suit all situations. The systems are delivered with factory-set default parameter settings, which enable optimal energetic operation and have already been adapted to the heat exchanger.

Integrated PID* Controller with Default Parameters

* PID: Proportional-Integral-Differential

The GMM systems are easy to use.


GMM – Energy-Efficient Intelligence for all Areas

The GMM system is available for AC or EC fans. Various technologies have been implemented. There is, however, one feature common to all management systems: They are equipped with various functions which serve to enhance energy efficiency.

GMMstep

Energy efficiency

Control

GMMphase cut*

GMMf-drive

GMMsincon®

AC fans

Investment

Cooling circuit

Precision

Speed controller

Sound Sound Sound Sound Sound Sound Sound Sound

Investment costs

Service life Service life Service life Service life Service life Service life Service life Service life

Cooling circuit

Precision

Speed controller

Investment costs

Cooling circuit

Precision

Speed controller

Investment costs

Cooling circuit

Precision

Speed controller

Investment costs

Cooling circuit

Precision Precision Precision Precision

Speed controller Speed controller Speed controller Speed controller

Investment costs Investment costs Investment costs Investment costs

GMMEC

EC fans

* Available from the middle of 2013not so good very good

Maximum efficiency can be achieved with EC fans and the GMM EC.

There are different application cases, and therefore various technologies are available for AC fans to cover all application possibilities.

GHMspray

professional

GHMpad

Cooling circuit Cooling circuit

GHMspray basic

Cooling circuit

Spraying / Humidifying

A spraying system or a humidifying system can be used to increase heat exchanger performance.


GMM step Allocation of Input and Output Functions

The GMM step is a step control system for AC external rotor or standard motors. Two types are available: a basic GMM step version with up to four steps, and a professional version enabling an add-on of up to nine steps. To ensure uniform utilization of the fans, there is a special “fan cycling” function whereby the fan which has the fewest operating hours is actuated. This enhances the operational reliability and service life of the fans. Additionally, functions like switch hysteresis are included as a matter of course.

GMM step Basic (1 – 4 steps)

GMM step Professional (4 – 9 steps)

GMM step basic1 – 4 steps

GMM step basic1 – 4 steps

GMM step professional4 – 9 steps

GMM step professional4 – 9 steps

Controller (GRCS)

Add-On Unit (GIOD)

1. Digital input 24 V DC Enable control Enable control2. Digital input 24 V DC Centralised fault Centralised fault3. Digital input 24 V DC Setpoint switchover

Heating/cooling switchoverSetpoint switchoverHeating/cooling switchover

1. Analogue input 4 – 20 mA Pressure or slave signal Pressure or slave signal2. Analogue input 4 – 20 mA (KTY) Pressure/temperature or slave

signalPressure/temperature or slave signal

3. Analogue input KTY Temperature Temperature4. Analogue input 0 – 10 V Slave signal Slave signal

1. Digital output Relay max. 230 V Actuation fan group 1 Priority 1 warning2. Digital output Relay max. 230 V Actuation fan group 2 Priority 2 malfunction3. Digital output Relay max. 230 V Actuation fan group 3 Operating message fans4. Digital output Relay max. 230 V Actuation fan group 4

or malfunctionActuation fan group 9

1. Analogue output 0 – 10 V Control signal for fans Control signal for fans2. Analogue output 0 – 10 V Control signal for subcooler fans Control signal for subcooler fans

Internal bus interface CAN Not present Signals for add-on

1. Digital output Relay max. 230 V Not present Actuation fan group 12. Digital output Relay max. 230 V Not present Actuation fan group 23. Digital output Relay max. 230 V Not present Actuation fan group 34. Digital output Relay max. 230 V Not present Actuation fan group 45. Digital output Relay max. 230 V Not present Actuation fan group 56. Digital output Relay max. 230 V Not present Actuation fan group 67. Digital output Relay max. 230 V Not present Actuation fan group 78. Digital output Relay max. 230 V Not present Actuation fan group 8GIOD

add-on


GMM Phase Cut*

The GMM phase cut is used for voltage-controllable AC external rotor motors. This is the most cost-effective way of realising a speed controller, while achieving constant pressure conditions in the cooling circuit. Utilization is not recommended for noise-sensitive applications or applications with stringent energy efficiency requirements. High operational reliability can be achieved with this product’s integrated bypass function.

Controller

1. Digital input 24 V DC Enable control2. Digital input 24 V DC Reduced noise (night mode)3. Digital input 24 V DC Heating/cooling setpoint switchover

1. Analogue input 4 – 20 mA Pressure or slave signal2. Analogue input 4 – 20 mA (KTY) Pressure/temperature or slave signal3. Analogue input KTY Temperature4. Analogue input 0 – 10 V Slave signal

1. Digital output Relay max. 230 V Priority 1 warning2. Digital output Relay max. 230 V Priority 2 malfunction3. Digital output Relay max. 230 V Operating message fans4. Digital output Relay max. 230 V Hardware bypass (activation of emergency operation)

1. Analogue output 0 – 10 V Control signal for fans2. Analogue output 0 – 10 V Control signal for subcooler fans

Internal bus interface CAN Control value/power unit parameter/malfunctions/operating messages etc.

* Available from the middle of 2013

Allocation of Input and Output


GMM f-drive

The GMM f-drive is a speed controller for standard motors with a frequency converter as the power unit. The f-drive can also be recommended for noise-sensitive applications as it does not cause any control-related noise. Up to nine power units can be used. Naturally, this product is also equipped with hardware and software bypass functions, which ensure operation even if a power unit fails. The power units are monitored by the controller module. Cos f always > 0.95 with public utility mains

The GMM sincon® achieves Cos f > 0.95. This means hardly any idle power is generated and additional idle power compensation is not required.

Controller

Frequency Converter






Low noise emissionsDue to the power unit’s high clock frequency (16 kHz), GMM sincon® does not produce control-related noise emissions. Whistling noises are minimised.

Low load current peaksInrush current limiters, which are prescribed by power supply companies for larger equipment, are already standard with the GMM sincon® even with the smallest construction size.

Allocation of Input and Output Functions


GMM sincon®

The GMM sincon® is a speed controller for external rotor motors with a frequency converter as the power unit. This product’s speciality is the downstream all-pole sine filter, which is an absolute necessity for external rotor motors. The GMM sincon® can also be recommended for noise-sensitive applications as it does not cause any control-related noise. Up to nine power units can be used. Naturally, this product is also equipped with hardware and software bypass functions, which ensure operation even if a power unit fails. The power units are monitored by the controller module.

Utilisation of the GMM sincon® ensures that compared with mains operation, the same or longer service lives can be achieved for the fans’ motor winding insulation and the bearings.

Heat exchangers usually have several fan motors that are driven by one inverter. This multiple-motor operation (parallel circuiting) with one frequency converter always poses a high risk potential for the fan motor. Through fault currents endanger the bearings; the winding is damaged by voltage peaks. These dangers can only be eliminated by appropriate additional measures, such as the all-pole sine filter. The GMM sincon® reduces exactly these bearing currents and voltage peaks, thereby ensuring reliable system op-eration.

Unlike most sine filters available on the market, the sincon® filter is equipped with an all-pole filter function. This important filter function is not only active between phases, but also between phase and ground. Precisely this filter function is necessary to prevent damage to external rotor motors thereby achieving the longest pos-sible service life.

Very good radial runout of fansThe sine-form motor voltage enables excellent synchronization of the motors. As a result, the load on the bearings is minimal.

Very low speeds are possible (from 0.5 Hz)This consistent sine voltage allows the motors to build up sufficient torque in the lower speed range. Controllability is maintained even when the load requirements for the heat exchanger are very low.

Low emitted interferenceThe GMM sincon® also has a very low emitted interference due to its sine-form output voltage. This means that cables without any special shielding can be used. The cable lengths can also be significantly longer than with frequency converters without sine filters. All EMC (= electromagnetic compatibility) requirements are also met without shielded cables.

The motor does not overheatNo additional motor overheating with non-sine form voltage parts, which increases the motor’s service life.

Barrier is relievedThere are no voltage peaks, as is the case with frequency converters without all-pole sine filters, where the motors’ service life is signifi-cantly reduced due to flashovers in the motor winding.

Maximum service life of motor bearingsMaximum service life of the motor bearings is achieved by keeping the bearing currents to a minimum.

Low load current peaksInrush current limiters, which are prescribed by power supply companies for larger equipment, are already standard with the GMM sincon® even with the smallest construction size.

Cos f always > 0.95 with public utility mainsThe GMM sincon® achieves Cos f > 0.95. This means hardly any idle power is generated and additional idle power compensation is not required.

Low noise emissionsDue to the power unit’s high clock frequency (16 kHz), GMM sincon® does not produce control-related noise emissions. Whistling noises are minimised.

The sincon® technology

Why an All-Pole Sine Filter?

Sine Filter

Frequency Converter


Connection and Cabling

The GMM sincon® offers significant advantages compared with a standard frequency converter.The sine-form output voltage has the following advantages:

- Very long feed cables can be used without producing a negative EMC (electromagnetic compatibility) effect.- Shielded cables or metal terminal boxes with metal bolted connections do not have to be used.- Expensive shielded motor cables are not necessary.- A second grounding conductor connection can be omitted since no significant leaking currents can flow to the motor.

Controller








GMM EC RD

T

Temperaturesensor

P

Pressure sensor

1 fan – 16 fans

Power supply

Power supply

Power supply

BusCommunication

Buskabel max. 200 m

GMM EC

Combining the GMM EC with highly efficient EC fans offers the ideal solution with respect to energy efficiency and noise emissions. In addition to the GMM properties mentioned above, the GMM EC is equipped with further unique functions.

With the Low Capacity Motor Management (LCMM) the sys-tem can also be operated efficiently during low partial load conditions. EC fans have a minimal speed of between 8 % and 12 % of the full load. The purpose of the LCMM is to faci-litate control within the lower capacity range (e.g. 5 %) of the heat exchanger. To this end, the GMM has a function whe-reby the control signal is recalculated as appropriate for the number of fans and their minimum speeds, and subsequently sent to the individual fans. To avoid frequent switching on and off, a hysteresis function can be activated. Based on a com-parison of the fans‘ operating hours (fan cycling), the GMM decides which fan is to be switched on.

Due to the automatic parameterisation or the addressing of the fans, neither special software nor particular expertise is required to start-up the system. The fans are automatically set to the values entered in the system, regardless of whether this was at initial start-up or when a fan needed replacing. The fans‘ usage limits are thus clearly defined and, as a re-sult, adherence to the required heat exchanger capacity and the maximum permissible sound levels is ensured. The ther-mal resistance of the power electronics in the motors is also guaranteed.

A further contribution toward increased operational reliability is the tear-off function. If a fan is blocked by ice, freedom of mo-vement is carefully restored by repeatedly running the fan clock-wise and anticlockwise with increasing torque. This function can be set via the GMM; if it is in operation, a message is displayed.

Pre-selected fans can be shut down using the selective fan shutdown function via a digital input signal (customer signal). This function is available in all operating modes: in control and slave mode. It is particularly useful for systems with two heat exchanger coils and for partial-load operation.

Controller



1. Digital output Relay max. 230 V Priority 1 warning2. Digital output Relay max. 230 V Priority 2 malfunction3. Digital output Relay max. 230 V Operating message fans4. Digital output Relay max. 230 V Threshold value


Internal bus interface CAN Actuation of EC distributorsControl value/power unit parameter/malfunctions/operating messages etc.


With the GMM EC RD, the display may be installed at a distance of up to 200 m from the unit.

Bus cable max. 200 m


Güntner Hydro ManagementGHM spray

The controller GHM spray controls the water spraying depending on the performance required of the heat exchanger and the gauged ambient temperature and fluid temperature. As a result, the capacity of the heat exchanger increases. The necessary information e.g. the speed, are read out by the speed controller via the bus communication. If a non-Güntner speed controller is used, the speed data can be transmitted via a digital signal. There are two systems:

Basic System:

The basic GHM spray system has one spray step. This system sprays the heat exchanger depending on various parameters (such as pressure or temperature) to attain an increase in capacity in the peak load range.

Speed / actual value / set point

Spee

d

Ambient temperature

Drain

Spraying ON/OFF

Professional System:

In addition to the basic system, up to 9 sections can be selected for spraying using the Professional system. This means that only individual sections of the heat exchanger are sprayed, thus achieving significant water savings. Furthermore, the service life of the heat exchanger is maximised by means of the section-cycling function, whereby the respective fin section with the fewest spraying hours is selected for spraying.


Spee

d

Ambient temperature

Drain

extension module

Spraying ON/OFF


With GMM

mit GMM

Without GMM

ohne GMM

Controller (GHM spray)

Add-On Unit (GIOD)

1. Digital input 24 V DC Enable spraying Enable spraying2. Digital input 24 V DC Free Speed controller in operation3. Digital input 24 V DC Free Free

1. Analogue input 4 – 20 mA Free Condenser: Pressure Drycooler: Free

2. Analogue input 4 – 20 mA (KTY) Free Free3. Analogue input KTY External temperature Drycooler: Return temperature

Condenser: External temperature4. Analogue input 0 – 10 V Free Drycooler: External temperature

Condenser: Free

1. Digital input Relay max. 230 V Solenoid valves (provided by customers)

Solenoid valves (provided by customers)

2. Digital input Relay max. 230 V Drain solenoid valves Drain solenoid valves3. Digital input Relay max. 230 V Input solenoid valve Input solenoid valve4. Digital input Relay max. 230 V Professional system: Step 9

Basic system: FreeProfessional system: Section 9 Basic system: Free

1. Analogue input 0 – 10 V Free Free2. Analogue input 0 – 10 V Free Free

Internal bus interface CAN Pressure or return temperature/release via setpoint/setpoint/heat exchanger type/refrigerant/units system

No bus communication

1. Digital output Relay max. 230 V Professional system: Section 1 Professional system: Section 12. Digital output Relay max. 230 V Professional system: Section 2 Professional system: Section 23. Digital output Relay max. 230 V Professional system: Section 3 Professional system: Section 34. Digital output Relay max. 230 V Professional system: Section 4 Professional system: Section 45. Digital output Relay max. 230 V Professional system: Section 5 Professional system: Section 56. Digital output Relay max. 230 V Professional system: Section 6 Professional system: Section 67. Digital output Relay max. 230 V Professional system: Section 7 Professional system: Section 78. Digital output Relay max. 230 V Professional system: Section 8 Professional system: Section 8

Allocation of Input and Output Functions Since our hardware is exposed to severe ambient conditions at the customer, we only use select sub-assemblies and compo-nents. During the early development stages, circuits undergo comprehensive tests in our measurement laboratory.


Güntner Hydro Management GHM pad*

The GHM pad wetting controller controls the water applied to the wetting mats in the air inlet of the heat exchanger. It regu-lates the amount of water applied as a function of the load requirement (fan speed) of the heat exchanger, as well as the gauged ambient temperature and air humidity.

As a result, the capacity of the heat exchanger increases. The necessary information e.g. the speed, are read out by the speed controller via the bus communication. If a non-Güntner speed controller is used, the speed data can be transmitted via a 0 – 10 volt signal.

speed controllerhumidification

controller

0-10V

LuftfeuchteUmgebungstemperatur

Drehzahl

Wassermenge

Dre

hzah

l

Entleerung

GMM ECGMM sinconGMM f-driveGMM Phase-Cut

GHM pad

speed controllerhumidification

controller

0-10V

LuftfeuchteUmgebungstemperatur

Drehzahl

Wassermenge

Dre

hzah

l

Entleerung

GMM ECGMM sinconGMM f-driveGMM Phase-Cut

GHM pad

Controller with GMM without GMM

1. Digital input 24 V DC Enable wetting system Enable wetting system2. Digital input 24 V DC Free Differential pressure switch3. Digital input 24 V DC Water meter Water meter

1. Analogue input 4 – 20 mA External temperature External temperature2. Analogue input 4 – 20 mA (KTY) External humidity External humidity3. Analogue input KTY Free Free4. Analogue input 0 – 10 V Differential pressure sensor Controlled value for fans

1. Digital output Relay max. 230 V Free Free2. Digital output Relay max. 230 V Draining Draining3. Digital output Relay max. 230 V Warning Warning4. Digital output Relay max. 230 V Malfunction Malfunction

1. Analogue output 0 – 10 V Control valve water Control valve water2. Analogue output 0 – 10 V Free Free

Internal bus interface CAN Controlled value for fans Controlled value for fans

* Controller for Jäggi ADC cooler


Spee

d

Ambient temperatureAir humidity

Water volume

Draining


Efficiency Mode

Furthermore, the GHM pad is able to check the operating costs during operation. This acts as an internal cost-management function, which continuously decides whether applying water or increasing the speed is the more cost-effective option and there-fore, the more efficient operating mode. To this purpose, the water consumption is constantly recorded in the system.

The amount of water here is steplessly controlled, unlike the GHM spray system. Consequently, even when the wetting sys-tem is switched on for the first time, extremely uniform heat dissipation is ensured.


Switch CabinetsGüntner Control Panel – GCP

The right switch cabinets for every heat exchanger can be delivered with or with-out Güntner controllers. You have the choice here between standard GCP Güntner switch cabinets and customised switch cabinets. All switch cabinets are planned, designed, built and tested in-house at Güntner’s Controls division, enabling us to collaborate with you in creating and offering a customised switch cabinet and con-trol concept.

These switch cabinet concepts are therefore optimally tailored to the heat exchang-ers’ set-up, capacity, energy efficiency and service life requirements, and, depend-ing on the size, can be added on directly on the unit. Should an add-on not be possible, the switch cabinets can be delivered with the unit. Of course, on request, Güntner also offers connection and start-up by its specialist staff on-site.

Options

The GMM systems are communicative: The Güntner Commu-nication Modules (GCM) are available as an option for all GMM systems. They can also be retrofitted. This communication module is used to transmit the data via standard bus systems for integration into the superordinate control system.

Modbus

Güntner Control Panel – GCPPressure sensor

Profibus

Temperature sensor

Naturally, all GMM systems can be kept state-of-the-art with software updates. Previously unavailable functions can be made available with software updates. The GMM COM software is used for this purpose. The software is installed on a PC or laptop; the appropriate firmware can be selected by means of a dialogue box and be transferred to the GMM/GHM system.

There are various types of sensors (pressure, temperature, hu-midity) for different applications.

Güntner Communication Module GCM

GMM COM Software

Sensors

GMM COM


Functions of the GMM Controllers Design in GPC – Simple and Quick

GMM step

GMM phase cut

GMM f-drive / sincon®

GMM EC

Integration X X X X

External predefined setpoint X X X X

External control signal X X X X

Night limit X X X

Bypass function X X X

Maintenance cycle* X X X X

Setpoint shifting X X X X

Extended threshold value function X X X X

Cleaning cycle* X

Refrigerant input X X X X

Two setpoints with switchover X X X X

Manual mode X X X X

Alarm management X X X X

Heating/cooling switchover X X X X

Bus slave operation with backup control system X X X X

Automatic parameterisation (plug-and-play) X X

Communication functionality (external BUS) X X X X

Maximum selection for analogue signals (pressure and temperature signals)

X X X X

International operating convenience X X X X

Integrated, freely adjustable PID controller with default parameters

X X X X

Low Capacity Motor Management (LCMM) X

Tear-off function* X

Selective fan shutdown X

Fan cycling X X

Of course, you can include all our products when designing your heat exchanger. The selected Controls products are configured and dimensioned in the Güntner Product Calculator (GPC) to harmonise with your heat exchanger. You can therefore rest assured that the control system is also individually customised in accordance with your plant concept.

GMM stepGMM phase cutGMM f-driveGMM sincon®

Güntner Control PanelGCP

* currently being developed


Güntner AG & Co. KGHans-Güntner-Str. 2 - 682256 FüRSTENFELDBRUCKGERMANY

www.guentner.eu

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Güntner Competence Controls - guentner.eu · core competence lies in the development and...

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