KE2
Controlled
Environment
Quick Start Guide
Parameter Name
Description
Range
Default
Current
ROOM TEMP
Room temperature to be maintained
-50°F to 90°F
55°F
HUMIDITY TARGET
Room humidity to be maintained
0% to100%
65%
DEFROST TYPE
Method of defrost used on the evaporator coil: Electric, Air, Hot Gas with Liquid Line Solenoid/Compressor relay off, Hot Gas with
Liquid Line Solenoid/compressor relay on
ELEC, AIR, HOT GAS COMP ON, HOT GAS COMP OFF
AIR
VALVE TYPE
Type of valve used on the system: mechanical, KE2 HSV (electric)
MECHANICAL, KE2 (ONLY KE2 HSV), CUSTOM
KE2 (HSV)
MIN SUPERHEAT
The low superheat value that the controller will override pressure control
4 TO 20
5°F
MAX SUPERHEAT
The high superheat value that the controller will override pressure control
20 to 60
25°F
MAX OPERATING PRES
The maximum allowable suction pressure, (not applicable if VALVE TYPE = MECHANICAL)
10 to 150
150 PSIG
MIN OPERATING SETPOINT
The minimum allowable suction pressure
0 to 150 PSIG
0 PSIG
REFRIGERANT
The type of refrigerant used in the refrigeration system
404A, R507, 407A, 407C, 422A, 422D, 134A, R22, R717, 438A, 408A, 409A, 407F, 410A, R744 404A
CUST
OM
EE
V
ONL
Y
MOTOR STEP RATE
Step rate for the EEV in steps per second
30 to 400 steps per second
200 steps per second
MAX VALVE STEPS
Number of steps for full stroke of EEV
200 to 6400 steps
1300 steps
HUMIDITY CONTROL
Humidity sensor
ON, OFF
ON
AUX TEMP1 MODE
Configuration mode of the auxiliary temperature sensor if VALVE TYPE = MECHANICAL
T1 SUCTION TEMP, MONITOR, TI ROOM TEMP, TI COIL TEMP
T1 SUCTION TEMP
AUX RELAY MODE
Configuration mode of the auxiliary relay.
ALARM RELAY, 2ND COMP RELAY, 2ND FAN RELAY, 2ND DEF RELAY 2 SPEED FAN CTL,
LIGHTS RELAY, PERM DEF, HUMIDIFIER RELAY
ALARM RELAY
FAN SPEED
Control variable fan speed by using setpoint as % off and on
-100% to 100%
0%
MIN COMP RUN TIME
Minimum amount of time the liquid line solenoid/compressor relay must remain on after it is energized
0 to 15 minutes
2 minutes
MIN COMP OFF TIME
Minimum amount of time the liquid line solenoid/compressor relay must remain off before it can be energized again.
0 to 15 minutes
5 minutes
REFRIG FAN MODE
Fan operation while in refrigeration mode
ON WITH COMPRESSOR, PERMANENT, MANAGED
ON WITH COMPRESSOR
DEFROST MODE
The method the controller uses to determine when to initiate a defrost.
DEMAND, SCHEDULED, RUN TIME
DEMAND
DEFROSTS / DAY
If DEFROST MODE = SCHEDULED: The number of evenly spaced defrosts per day the controller will initiate.
0 to 8
4
1ST DEFROST DELAY
If DEFROST MODE = SCHEDULED: The amount of time from controller power up until the first defrost is initiated.
0 to 240 minutes
120 minutes
DEFROST FAN STATE
Whether or not to run the evaporator fans during defrost
ON/OFF
OFF if DEFROST TYPE = ELEC, HOT GAS COMP ON, HOT GAS COMP OFF
ON if DEFROST TYPE = AIR
DEFROST TERM TEMP
The temperature the coil sensor(s) must exceed in order to terminate defrost. The defrost relay is de-energized at this point.
35°F to 90°F
50°F if DEFROST TYPE = ELEC, HOT GAS COMP ON, HOT GAS COMP OFF
40°F if DEFROST TYPE = AIR
DEFROST PARAMETER
The maximum amount of time the defrost relay will be energized for schedule defrosts.
0 to 90 minutes
25 minutes if DEFROST TYPE = ELEC
10 minutes if DEFROST TYPE = HOT GAS COMP ON, HOT GAS COMP OFF
40 minutes if DEFROST TYPE = AIR
DRAIN TIME
Time to be in drain mode (drip time)
0 to 15 minutes
2 minutes
COMP RUN TIME
If DEFROST MODE = RUN TIME: The amount of time liquid line solenoid/compressor relay is energized before the next defrost is initiated.
0 to 24 hours
6 hours
ELEC DEFROST MODE
If DEFROST TYPE = ELEC: Whether to leave the defrost relay energized during the defrost cycle or to utilize advanced defrost algorithm.
PULSE, PERMANENT
PERMANENT
FAN DELAY TEMP
After defrost, the coil sensor reading must fall below this temperature set point in order for the controller to resume normal fan operation.
-40°F to 35°F
20°F
MAX FAN DELAY TIME
Maximum amount of time after defrost to resume normal fan operation.
0 to 20 minutes
2 minutes; 0 if Room Temp Setpoint is > 35°F
PUMP DOWN TIME
Minimum amount of time between de-energizing the liquid line solenoid/compressor relay and energizing the defrost relay.
0 to 10 minutes
0 minutes
MULTI AIR TEMP CTRL
Set to use average or warmest air temp when multiple air temps are available
WARMEST, AVERAGE
WARMEST
BONDED CNTRLRS ONL
Y
MULTI EVAP COOL
Select whether to sync bonded contollers or let run independently in COOL or OFF modes
SYNC, INDEPENDENT
SYNC
MULTI EVAP DEFROST
Select whether to sync bonded controllers or let run independently in DEFROST or DRAIN modes
SYNC, INDEPENDENT
SYNC
MULTI EVAP SENSOR
Select whether to SHARE or NOT SHARE sensor readings for bonded controllers
SHARED, NOT SHARED
SHARED
HIGH TEMP ALARM OFFSET
The number of degrees above ROOM TEMP for a HIGH TEMP ALARM condition.
0°F to 99.9°F
10°F
HIGH TEMP ALARM DELAY
Minutes the room temperature must remain above ROOM TEMP + HIGH TEMP ALARM OFFSET before issuing a HIGH TEMP ALARM
0 to 120 minutes
60 minutes
LOW TEMP ALARM OFFSET
The number of degrees below ROOM TEMP for a LOW TEMP ALARM condition.
0°F to 20°F
4°F
LOW TEMP ALARM DELAY
Minutes the room temperature must remain below ROOM TEMP - LOW TEMP ALARM OFFSET before issuing a LOW TEMP ALARM
0 to 30 minutes
10 minutes
HUMIDITY ALARM OFFSET
The %RH above or below ROOM HUMIDITY for HIGH HUMIDITY ALARM condition or LOW HUMIDITY ALARM condition
0% to 25%
5%
HUMIDITY ALARM DELAY
Time the %RH must remain above or below ROOM HUMIDITY, HUMIDITY DIFF, HUMIDITY ALARM OFFSET before issuing a HIGH HUMIDITY ALARM OR LOW HUMIDITY ALARM
0 TO 360 minutes
120 minutes
DOOR ALARM DELAY
If DIG IN (1, 2 and/or 3) MODE = DOOR SWITCH: The amount of time, in minutes, before an alarm condition is initiated if door is open and room
temperature is 5 degrees above ROOM TEMP + AIR TEMP DIFF
0 to 180 minutes
30 minutes
DIG IN 1 MODE
Sets the function of the digital input
DISABLED, 2ND ROOM TEMP, DOOR SWITCH, EXT ALARM, SYSTEM OFF
DISABLED
DIG IN 1 STATE
Sets whether the switch activates when opened or closed
OPEN, CLOSED
OPEN
DIG IN 2 MODE
Sets the function of the digital input
DISABLED, 2ND ROOM TEMP, DOOR SWITCH, EXT ALARM, SYSTEM OFF, DFR INTERLOCK,
DFR LOCKOUT
DISABLED
DIG IN 2 STATE
Sets whether the switch activates when opened or closed
OPEN, CLOSED
OPEN
DIG IN 3 MODE
Sets the function of the digital input
DISABLED, 2ND ROOM TEMP, DOOR SWITCH, EXT ALARM, SYSTEM OFF, LIGHTS SWITCH,
DISABLED
DIG IN 3 STATE
Sets whether the switch activates when opened or closed
OPEN, CLOSED
OPEN
2ND ROOM TEMP
If DIG IN (1, 2 and/or 3) MODE = 2ND ROOM TEMP: This value becomes the ROOM TEMP setpoint when the digital input is active
-50°F to 90°F
-50°F
SUCT PRES OFFSET
An offset added or subtracted from the suction line pressure transducer reading
-5.0 to 5.0 psig
0.0 psig
SUCT TEMP OFFSET
An offset added or subtracted from the suction temperature sensor reading
-5.0°F to 5.0°F
0.0°F
AIR TEMP OFFSET
An offset added or subtracted from the room temperature sensor reading
-5.0°F to 5.0°F
0.0°F
COIL TEMP OFFSET
An offset added or subtracted from the coil temperature sensor reading
-5.0°F to 5.0°F
0.0°F
HUMIDITY OFFSET
An offset added or subtracted from the humidity sensor reading
-5% to 5% RH
0%
TEMP UNITS
Units for temperature’s display in °F or °C
FAHRENHEIT/CELSIUS
FAHRENHEIT
AIR TEMP DIFF
The number of degrees above ROOM TEMP before the controller will go into REFRIGERATION mode
0.1°F to 5°F
1°F
HUMIDITY DIFF
The number of %RH above or below before the controller will go into DEHUMIDIFICATON or HUMIDIFICATION mode
0% to 25%
5%
DEHUMIDIFY OFFSET
An offset from ROOM TEMP to keep cooling if humidity is above setpoint
-20°F to 0°F
0°F
EXT DIGITAL SWITCH
Provides external output to control: HEATER, HUMIDIFIER, or DEHUMIDIFIER RELAY
HEATER SWITCH, DEHUMIDIFY RELAY, HUMIDIFIER RELAY
HEATER
HEATER OFF DIFF
ROOM TEMP minus HEATER OFF DIFF setpoint turns heaters off
-99.9°F to 0°F
-99.9°F
HEATER ON DIFF
ROOM TEMP minus HEATER ON DIFF setpoint turns heaters on
-100°F to -0.1°F
-100°F
EXTREME TEMP DIFF
ADVANCED TOPIC: Call KE2 Therm for assistance
PROPORTIONAL
A coefficient to the valve control algorithm that increases valve responsiveness
3
0 to 255
INTEGRAL
A coefficient to the valve control algorithm that increases valve responsiveness
5
0 to 255
DERIVATIVE
Should not be adjusted unless instructed by KE2 Therm technical support
3
0 to 255
Q.1.23 November 2014
Page 18
© Copyright 2014 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Setpoints Menu
Table 3 - Controller Menus and Menu Parameters
