Post on 25-Sep-2020
© Copyright 2014 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Q.1.27 July 2014
Configuring a KE2 Evaporator Efficiency for use with a Door Switch
Door Switch - Specifications - pn 20543 20543 - Door SwitchContact 22AWG
Contact Rating 10VA
Contact Type Normally Open
Max Carry Current 2 Amp
Max Switching Current .5 Amp
Breakdown Voltage 250 VDC
Operating Gap 2 inches
Temperture Range 32°F to 120°F (0°C to 49°C)
Housing Material solid aluminum housing
Cable Length 24” stainless steel armored cable
Certifications UL and ULC listed
Temperature Sensors Pressure TransducerT1SuctT4Aux T2AirT3Coil
line / L1 groundneutral / L2
NCNO
NO NC
NO NC
COM
COM
NC
Power In
gree
n
red
blac
k
NO
Transformer
3A Relay
3A Relay COM
COM
COMNCNO
COMNCNO
18V
DI 1
DI 3
DI 2
Electric Valve
Temperature Sensors (4)
Pressure Transducer
RJ45 Ethernet Connection
DAC for ECM Fan
Fuse
groundredgreenwhiteblack
Auxiliary Relay
Fan Relay (10 amp)
groundsignal +5
Defrost (Heater) Relay(20 amp)
Bk/MDL-1/4Time Delay
Liquid Line Solenoid
Power In
(compressor)
door switchsystem o�
dual temp settingexternal alarm
light switchdefrost interlock
defrost lockout
Digital Inputs
Pressure Transducer Wiring Detail black
red
green
VoltageSelector
1 2 3 4
0-10V analog out
+_
Steps for setting up the KE2 Evap for use with a door switch
Exclusively designed for rugged high traffic installations. The reed switch is hermetically sealed with a PVC shock absorber enclosed within a solid aluminum housing. Installation wires are protected in a 24” stainless steel armored cable. The magnet is mounted on an adjustable L shaped bracket designed for greater flexibility, universal mounting, greater pulling power, and to provide a professional installation appearance.
Operation of the KE2 Evap with door switch activated: Normal KE2 Evap system operation while the door is closed. When the door is opened, evaporator fans are turned off. If the door is left open for longer than 60 seconds, the solenoid (EEV) is closed to initiate system pumpdown. System will remain in pumpdown until door is closed If the door is left open for time set in Door Alarm Delay (default is 30 min.) and the temperature rises 5° above setpoint, a Door
Alarm is activated and the system is turned back on to resume cooling Once the door is closed, normal KE2 Evap system operation resumes.
1. Wire door switch (dry con-tact) to a Digital Input
© Copyright 2014 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Configuring a KE2 Evaporator Efficiency for use with a Door Switch
Q.1.27 July 2014Page 2
2. Access controller’s web page and select Setpoints from the Home Page.
3. Select Login to make Setpoint changes.
4. Enter the User Name ke2admin and the Password ke2admin* and press Enter (Return) on your keyboard or click the Submit button on the bot-tom right of the screen.
*For security purposes, the User Name and Password can be changed from the factory default under the Settings Page.
Q.1.27 July 2014Page 3
© Copyright 2014 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Configuring a KE2 Evaporator Efficiency for use with a Door Switch
5. Set Digital Input Mode to Door Switch from the dropdown menu.
6. Set Digital Input State to active when Open from the dropdown menu. Note: This can be set to Closed for a Normally Open door switch.
7. Click Save.
8. If the door is left open for the time set in Door Alarm Delay, an alarm is activated and the system resumes cooling.
Adjust the Door Alarm Delay based on your typical delivery timeframe.
© Copyright 2014 KE2 Therm Solutions, Inc., Washington, Missouri 63090Q.1.27 July 2014 supersedes Q.1.27 June 2014 and all prior publications
Configuring a KE2 Evaporator Efficiency for use with a Door Switch
Q.1.27 July 2014Page 4
KE2 Therm Solutions 209 Lange Dr. . Washington, MO 63090
1-888-337-3358 . www.ke2therm.com
Menu Parameters:
MANUAL CONTROLMANUAL VALVE4
CLEAR ALARMSMANUAL COMPRESSOR RELAY
MANUAL DEFROST RELAYMANUAL FAN RELAYMANUAL AUX RELAY
FACTORY RESETWEB PASSWORD RESET
DOD INITCLEAR MD
Menus: Variables Manual(view only)
Non-adjustable
NO ALARMPRESSURE SENSOR
SUCTION TEMP SENSORAIR TEMP SENSOR
COIL TEMP SENSORAUX TEMP SENSOR
HIGH SUPERHEATLOW SUPERHEAT
HIGH AIR TEMPLOW AIR TEMP
EXCESS DEFROSTDEFR TERM ON TIME
DOOR SWITCHCOMMUNICATION ERROR
EXT ALARMEMAIL FAILURE
Alarms (view only)
ENTER
ENTER
Left and Right Arrows Use to move between Menus
Up Arrow and Down ArrowScroll through Menu Parameters
ENTERPress and hold ENTER for 3 seconds, when display begins blinking changes can be made
BACK Press BACK to return to the previous view.
ENTER Press and hold ENTER for 3 seconds to save change
To change settings:
To save setting changes:
To move throughcontroller menus:
To return to Main Menu:
Indicator lights Red light - critical alarm (system o�)Yellow light - non-critical alarm (system running)Green light - compressor onGreen �ashing - compressor waiting on timer to start/stop
KE2 EvaporatorEfficiency
TM
thermsolutions
ENTER
BACK
22
1 T1 and T4 are parameters that can be set to various functions. The default for T1 is Suction Temp, the T4 is Coil Temp.
2 The Setpoint paramenters shown in BOLD (Valve Type, Room Temp Setpoint and Defrost Mode) need to be set by the user prior to start up. The other Setpoint Parameters can also be adjusted, however the factory setpoints are generally correct for most applications.
3 The Setpoint parameters shown in ITALIC are only displayed when a Custom EEV is used.
4 Displayed when an EEV is used.
5 Only available if mechanical valve is selected. When using an electric valve the default, suction temperature, is required.
6 The Setpoint parameters shown in BOLD ITALIC are used for bonded controllers only.
7 Only displayed when Run Time Defrost is selected.
ROOM TEMPCOIL TEMP
SYSTEM MODESUPERHEAT
SUCTION PRESSURE T1 SUCTION TEMP1
SATURATION TEMPVALVE % OPEN4
T4 AUX TEMP1
COMPRESSOR RELAYDEFROST RELAY
FAN RELAYAUX RELAY
DIG 1 STATUSDIG 2 STATUSDIG 3 STATUS
IP OCTET 1IP OCTET 2IP OCTET 3IP OCTET 4
SUBNET MASK OCTET 1SUBNET MASK OCTET 2SUBNET MASK OCTET 3SUBNET MASK OCTET 4
FIRMWARE VERSION
ENTER Press ENTER to go from parameter to value.To toggle beweendescription and value :
ROOM TEMP2
DEFROST TYPE2
VALVE TYPE2
MOTOR STEP RATE3
MAX VALVE STEPS3
SUPERHEAT4
MAX OPERATING PRES4
REFRIGERANTAUX TEMP 4 MODE
AUX TEMP 1 MODE5
AUX RELAY MODEFAN SPEED
MIN COMP RUN TIMEMIN COMP OFF TIME
REFRIG FAN MODEDEFROST MODEDEFROSTS / DAY
1ST DEFROST DELAYDEFROST FAN STATE
DEFROST TERM TEMPDEFROST PARAMETER/MAX DEFROST TIME
DRAIN TIMECOMP RUN TIME7
ELEC DEFROST MODEFAN DELAY TEMP
MAX FAN DELAY TIMEPUMP DOWN TIME
MULTI AIR TEMP CTRLMULTI EVAP COOL6
MULTI EVAP DEFROST 6
MULTI EVAP SENSOR6
HIGH TEMP ALARM OFFSETHIGH TEMP ALARM DELAY
LOW TEMP ALARM OFFSETLOW TEMP ALARM DELAY
DOOR ALARM DELAYDIG IN 1 MODEDIG IN 1 STATEDIG IN 2 MODEDIG IN 2 STATEDIG IN 3 MODEDIG IN 3 STATE
2ND ROOM TEMPSUCT PRES OFFSET
SUCT TEMP OFFSETAIR TEMP OFFSET
COIL TEMP OFFSETAUX TEMP OFFSET
TEMP UNITSAIR TEMP DIFF
EXTREME TEMP DIFFPROPORTIONAL
INTEGRALDERIVATIVE
Setpoints
Variables for DIG IN MODEDISABLED2ND (ROOM) TEMPDOOR SWITCHEXT ALARMSYSTEM OFFDEFROST LOCKOUTDEFROST INTERLOCK
Enter Password
Variables for DIG IN StateCLOSEDOPEN
Setting up the KE2 Evap for use with a door switch using the controller’s display
1. Using the arrows, navigate to Setpoints, then find Digital Input Mode. Changed it from Disabled to Door Switch.
2. Then change Ditigal Input State to Open (or Closed)