HOTEL AUTOMATION ROOM SYSTEM Room controller HARS …

CM2N6262.CEEen

01.10.2009

Building Technologies

6262.CEE

HOTEL AUTOMATION ROOM SYSTEM

Room controller HARS-C27

Room controller for temperature, energy and access control, and for

management of the hotel room

• For 2-pipe or 4-pipe fan-coil systems

• For VRV/VRF air condition systems (optional)

• For split/multi-split air condition systems (optional)

• For radiators and cooling/heating via 2-pipe fan-coil system

• Heating for bathroom

• Centrally programmable room temperature setpoint with

individual setpoint adjustment from the guest's room

• Control of room lighting

based on room occupancy and using keypad

• Control of blinds or courtain (optional)

• Control of room safe via transponder card (optional)

• Energy management for individual room control system

based on room occupancy

• Room access control via transponder card

• Registration and transfer of messages and alarms to the database server

• Additional inputs for various I/O functions

• Loaded standard application

• Customized application software available as an option

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Siemens HARS-C27 – Room Controller CM2N6262.CEEen

Building Technologies 01.10.2009

Use

The HARS-C27 room controller integrates temperature control, energy management,

access control, light control, room safe control and the management of a hotel room, at

room level.

For operation, use is made of room operating unit, card reader, card holder, light

operating unit and a connection to the bus and power supply.

Functions

The room controllers are delivered with the standard application if not defined

specifically (the basic features are described in this data sheet).

The functions are determined according to standard application functions (if not

specified otherwise).

In special cases, the standard application may be overwritten with a definitive

customized application software. A commissioning and service tool is available for this

purpose.

The following options can be implemented with fan-coil units:

• 4-pipe heating/cooling with 3-position or PWM valves output

• 2-pipe heating/cooling with 3-position or PWM valve output with changeover

• 2-pipe system with internal electric heating, 2-position or PWM valve output

and cooling with 3-position or PWM valve output

• 4-pipe heating via external radiator

and heating/cooling with 3-position or PWM valves output

• VRV/VRF indoor unit control (cooling/heating with fan speed control*)

•••• Auxiliary heating in bathroom, additional radiator or underfloor heating with

2-position, 3-position or PWM valve output *VRV/VRF fan speed control is done via software application control (optional)

Room temperature setpoints:

• Centrally programmable room comfort temperature setpoint

• Individual setpoint adjustment of room comfort temperature setpoint in guest's room

• PreComfort setpoints when guest is absent

• Economy setpoints for free rooms (i.e. from which guests have checked out)

• Remote room temperature setpoint adjustment in rooms unoccupied for long periods

Energy-saving features:

• Energy management for individual room control system and lighting

based on room occupancy:

− Room occupied, guest in room

− Room occupied, guest absent

− Room vacant, not checked in

− Room out of use, i.e. during low season

• Summer/winter strategy

(i.e. avoid heating in summer and avoid cooling in winter)

• Fan coil unit disabled if window is opened

Temperature control

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Electricity:

• Master switch function: electrical consumers enabled/disabled automatically by

putting/taking the card from card holder

• Switch-on control of courtesy light function upon entry to room

• Electrical consumers enabled and disabled by pre-programmed, guest dependent

function

• Water supply shut off in the absence of guests and hotel staff (only possible with

electromagnetic valve installed)

• Control of blinds or curtain (optional)

• Control of lights in the room

• Control of balcony/decorative light

• Control of bathroom heating

• Receipt of access code from the connected transponder card reader

• Control of access to guest rooms and suites

• Receipt of access codes for guests, hotel staff and emergency access cards from

the central management station at the reception

• Management of all access codes

• Activation of door opening mechanism when access is granted

• (Optional) Access control to room safe

• SOS alarm or bathroom alarm

• "Do not disturb" and "Room service call" or "Make up room"

• "Guest present" indicator for hotel staff only or for all-time

• Alarm message if door is opened in unoccupied room (door intrusion) *)

• Alarm message if window is opened in unoccupied room (window intrusion) *)

• "Room cleaned" indication for room service to mark which room is prepared for

usage

• Registration and transfer of messages and alarms to the database server

• Alarm message if water overflow in bathroom occurs **)

• Alarm message for room main power supply failure *)

• Optionally, other functions can be programmed and linked to inputs and outputs

• Door opened and window opened message

*) Messages appear on HARS-SWx system software

**) Message appears on HARS-SWx system software and

on HARS-T0x device when hotel staff card is in HARS-HTx

• Room controller parameter setting

• Remote adjustment of room comfort setpoint

• Alarm message if room temperature is too high

• Alarm monitoring and message display

• Room status monitoring

• Automatic registration of temperature data

• Trend graph during all usage time (with additional application)

• Interface to front office system (FOS) or property management system (PMS) via the

hotel room management station HARS-SW.xx

• Online communication over RS485 building bus

Ordering

When ordering, please specify the quantity, product name and type code:

Example: 20 Room controllers HARS-C27

Energy management

Access control

Management level

Building automation

and control

Communication

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Compatibility

Name Type Data sheet

Room operating unit HARS-T05.xx 6274.CEE

Transponder card reader HARS-RT.xx 6272.CEE

Transponder card holder HARS-HT.xx 6273.CEE

Light operating unit HARS-L05.xx 6281.CEE

Mechanical design

The HARS-C27 controller consists of a housing base, a housing cover and a printed

circuit board with connection terminals.

The controller also has a tool socket.

Terminal covers

STOP Caution

6314z04

Owing to the intrinsic heat generated by the

controller, terminal covers must not be used,

as this can cause overheating.

For the same reason, adequate air circulation

must be provided in the location where the

controller is installed.

Device label

5/13



To prevent accidental physical contact with relay connections carrying voltages in

excess of the SELV voltage range (Ueff > 42), the device must be fitted in a housing

(preferably a control panel). This enclosure must be accessible only by use of a key or

tool.

Alternatively, a commercially available contact guard can be used.

All terminals are plug-in type to ensure easier maintenance and commissioning.

To avoid incorrect wiring, terminals which can be connected to AC 230 V (supply and

relay outputs) are physically segregated from the other terminals. They are arranged so

that, under normal circumstances, all incoming and outgoing cables can be connected

without crossing.

• If the management system or communication link fails, this will not affect local

operation

• External fuses are required for load operation power supply inputs

• The controller comes with a self-resetting thermal fuse to prevent overload damage.

Disposal

The device includes electrical and electronic components and must not be disposed of

as domestic waste.

Current local legislation must be observed.

Protection from

physical contact

Connection terminals

Response in the event

of a fault

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Topology

Hardware

inputs/outputs

Valv

e a

ctu

ato

r

Fan

Blin

ds

Lig

hting

Door

opener

Various s

witch.

Room

opera

ting u

nit

Card

reader

Lig

ht

opera

ting

unit

Card

hold

er

Engineering notes

• 230VAC is required for the room controller power supply. This power supply should

be provided for all HARS-Cxx controllers through UPS or aggregate power supply

source

• Additional 230VAC is required for loads control power supply.

• All HARS-Cxx controllers are connected together via RS485 bus. A RS485/RS232

converter is installed on a central place between room controllers and PC. No more

than 128 controllers can be connected on the same BUS line. In practice BUS line is

divided onto logical areas (i.e. floors, dilatations, groups of rooms, etc.). Maximum

cable length for one BUS line is 1000 m.

• The room controller must be installed in a control panel or covered enclosure, which

can only be opened with a key or tool. Adequate air circulation must be ensured.

• The relevant technical, and health and safety regulations must be observed,

including local electricity company regulations applicable to connection of devices to

the electricity network.

• The management level PCs must be protected with a UPS (uninterruptible power

supply).

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• A mechanical safety lock must be provided to allow the doors to be opened from the

outside in extreme emergencies.

The sizing and fuse protection of the power supply cables depends on the total load

and on local regulations.

• Relay outputs allow switching of loads up to AC 250 V, 6 A. The cable dimensions

depend on the connected load and the local installation regulations. The circuits

must be externally fused (≤ 6 A), as there are no internal fuses.

• The output loads control power supply input X7 should be connected to mains

voltage 230 V if not otherwise specified.

STOP Caution

• Fan coils must not be connected in parallel (use cut-off relays).

Mounting instructions

The room controller can be mounted in any orientation, as follows:

Rail mounting

The housing base is designed for

snap-mounting on DIN rails, type EN 60175

(can be released with a screwdriver).

• The HARS-C27 room controller is installed in the corridor with other installed

devices, behind the plasterboard.

• There must be a means of dissipating the heat generated during operation.

Adequate air circulation must be ensured.

• Subject to certain conditions, the HARS-C27 room controller can be installed in

suspended ceilings. Potential noise problems caused by the switching of relays

should be resolved in a sample room.

• As installation is the same for all types of room (e.g. single rooms or suites), it is

recommended that a sample room should be set up for each room type, in

cooperation with the electrical installer.

• Ensure the room controller is accessible for commissioning and service work.

• The card holder is intended for fixed installation in a dry, enclosed space.

• Commissioning must be carried out by trained personnel only

STOP Caution

• Local safety and installation regulations must be observed!

Observe the technical data for the relay outputs.

AC 230 V

supply cables

Relay outputs

AC 230 V

8/13



• LiYCY twisted pair type cable with 2 twisted pair for connection of the RS232/RS485

converter to all room controllers (includes 2 spare wires)

The following room devices can be connected to the room controller:

- card reader

- card holder

- room operating unit

- light operating unit

Cables:

8 x 0,14 mm2 flat telephone cable for:

- card reader

- room operating unit

- light operating unit

6 x 0,14 mm2 flat telephone cable for:

- card holder

STOP Caution

Adequate EMC precautions must be taken when installing the equipment.

The room bus and room peripherals cables must not be routed in the same

conduit as high voltage conductors.

Commissioning

• During commissioning, the room controller address has to be set by using room

operator unit connected to its socket X11.

• The controller must be connected to the supply voltage for this purpose.

• In the case of customer-specific applications, the customized application software

must be downloaded from a service tool to service socket K1.

• The room controllers are already loaded with the standard application on delivery.

It is then only necessary to adjust the parameters with the commissioning software.

RS485 BUS

(Terminal block X1)

Wiring

Room peripherals

cables

Wiring

9/13



Technical data

Power supply Working voltage: AC 230 V, 50 / 60 Hz

Power consumption of controller Max. 50 VA

Ports/interfaces Plug-in screw terminals

Inputs 1 5 digital inputs DC 12 V / 10 mA (galvanically isolated)

Wiring Simple signal conductors

Inputs 2 1 digital input DC 5 V / 5 mA (no galvanic isolation)

Wiring Simple signal conductors

Inputs 3 2 analog inputs DC 12 V / 5 mA (galvanically isolated)

Wiring Screened twisted pair

signal conductors

Outputs 7 Triac outputs 230 V Max. AC 250 V, max. AC 0.5 A

3 Relay outputs 230 V Max. AC 250 V, max. AC 4 A

STOP Caution

Total of all outputs Max. 6 A for all outputs

1 DC1)

output for door opener

(door solenoid), non-floating

DC 12 V, max.10W for max. 5s1)

short-circuit proof

Card reader connection DC 12V, max. 150mA 1)

Card holder connection DC 12V, max. 150mA 1)

Room operating unit connection DC 5V, max. 150mA 2)

DC +5 V for SLAVE connection to

HARS-C10 controller

DC 5V, max. 5mA 2)

STOP Caution

1) Total of all DC 12 V currents DC 12 V, max. 1,5 A for max. 5s

STOP Caution

2) Total of all DC 5 V currents DC 5 V, max. 0,3 A

Mounting DIN rail EN 60175

Ambient conditions Operating temperature: 0...40ºC

Storage: –30...70ºC

Electromagnetic

compatibility

EN 61131-2:2003

Low voltage equipment EN 61010-1:2001

Housing

protection standard

To EN 60 529 IP 20

Protection class To EN 60 730 II

conformity Meets the requirements of: EMC

Directive

2004/108/EC

Low-voltage directive 2006/95/EC

Dimensions See also dimension diagrams 159,1 x 89,8 x 59,5 mm

Dimensions Width in DIN modular spacing units 9

Weight excluding packaging 0.7 kg *)

Colour Body Light gray RAL 7035

*) depending on add installed options

10/13



Connections

X1: RS485 BUS connection

X2: Relay output and power supply max. AC 230V

X3: 2 relay outputs and power supply max. AC 230 V

X4: 1 triac and 2 relay outputs max. AC 230 V

X5: 2 triac, 3 relay outputs and power supply max. AC 230 V

X6 and X8.3: 2 triac outputs max. AC 230 V

X7: Controlled loads power supply input max. AC 230 V

X8.1 X8.2: Controller power supply input max. AC 230 V

X10: 9 digital and 2 analog input and 1 digital output

X11: Room operating unit connection

X12: Card reader connection

X13: Light operating unit connection

X14: Card holder connection

X15: 12 VDC lock output connection

K1: Service socket: 6-pin � Use special service cable!

Interface layout:

Interfaces:

11/13



Connection diagrams

The following functions are valid for the standard application

Pin I Function

1 L Phase 230 VAC Max. 230VA

2 N Neutral

Pin I/O Function

1 L Phase 230VAC Max. 50VA

2 N Neutral

3 T1 Main switch output 230VAC Max. 10VA

Pin I/O Function

1 R1 Bathroom heating

2 L Power supply 230VAC

Pin I/O Function


2 R1 Output relay 1

3 R2 Output relay 2

Pin I/O Function

1 T1 Output triac

2 R1 Output relay 3

3 R2 Output relay 4

Pin I/O Function


2 T1 Cool valve

3 T2 Heat valve

4 R1 Fan coil fan 3rd

speed

5 R2 Fan coil fan 2nd

speed

6 R3 Fan coil fan 1st speed

Pin I/O Function

1 N.C. Don't use

2 T1 Welcome light

STOP Caution

1) Total of all Triac and Relay outputs: Max. 230 VA for all outputs

STOP Caution

Fans connected to the relay outputs must not be operated in parallel.

For parallel operation use cut-off relays or slave room controllers.

Terminal block X7

Mains power supply

AC 230 V

Terminal block X8

Controller power supply

Main switch output

AC 230 V

Terminal block X2

Relay output

AC 230 V

Terminal block X3

Relay outputs

AC 230 V

Terminal block X4

Relay outputs

Triac output

AC 230 V

Terminal block X5

Relay outputs

AC 230 V

Terminal block X6

Triac output

AC 230 V

From X3.1

From X7.1

From X7.1

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Pin I/O Function

1 DI 1 Light input 1 (or other)

2 DI 2 Light input 2 (or other)

3 DI 3 Window contact

4 DI 4 Door contact

5 GND for X10:1 – X10:7

6 DI 5 SOS button

7 DI 6 Motion detector input (or other)

14 DI 7 Aux input 4

15 GND for X10:14 - X10:16

16 DI 8 Presence in from master (or other)

8 A1

9 A2 Water leakage sensor input

10 T1

11 T2 Bathroom temperature probe input

12 PRES.+

13 PRES.-

Digital output for SLAVE connection to

HARS-C10

Pin I/O Function

1 A+ RS485 RS485 bus (galvanically separated from controller)

2 B– RS485 RS485 bus (galvanically separated from controller)

Pin I/O Function

1 +12VDC Door lock

2 GND Door lock

STOP Caution

2) Total of all DC 12 V currents: DC 12 V, max. 1.5 A max. 5s

Pin Function

1 GND

2 +5VDC

3 DATA_IN

4 RESET

5 CLK

6 DATA_OUT

� Use special service cable!

Terminal block X10

Digital inputs

DC 12 V isolated

Analog inputs

Digital output

Terminal block X1

RS485 BUS

Terminal block X15

12VDC lock output

Service interface K1:

6-pin

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behind the device label

Dimensions

Service connector

Dimensions in mm

Without terminal covers

2009 Siemens Building Automation CEE Subject to change

HOTEL AUTOMATION ROOM SYSTEM Room controller HARS …

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