KE2 thermsolutions + Air Defrost Controller User guide

Brand
KE2 thermsolutions
Model
+ Air Defrost Controller
Type
User guide

KE2 thermsolutions + Air Defrost Controller is designed for medium-temperature applications with air defrost. It offers precise temperature control, advanced alarm systems, and flexible defrost scheduling. With its user-friendly interface, you can easily set the temperature setpoint, differential, compressor starts per hour, defrost cycles per day, and defrost time. The controller also features high and low-temperature alarms, a temperature alarm delay, and a Modbus address for communication.

KE2 thermsolutions + Air Defrost Controller is designed for medium-temperature applications with air defrost. It offers precise temperature control, advanced alarm systems, and flexible defrost scheduling. With its user-friendly interface, you can easily set the temperature setpoint, differential, compressor starts per hour, defrost cycles per day, and defrost time. The controller also features high and low-temperature alarms, a temperature alarm delay, and a Modbus address for communication.

Q.3.65 April 2022
KE2 Temp + Air Defrost
For Medium Temperature Applications with Air Defrost
Condensed Quick Start Guide PN 20611
© Copyright 2022 KE2 Therm Solutions, Inc., Washington, Missouri 63090
This reference should remain on site with the
installed KE2 Temp + Air Defrost controller.
Supplies List
The accessories required for the controller to work are supplied. However, some truck stock items may be needed. See the following list.
Programming
Press & hold ENTER button
to access setpoint menu
Use arrow buttons to
select function:
tS = Temperature Setpoint
diF =
CSH = Max Compressor
Starts/ Hour
dPd = Defrost Per Day
dFt = Defrost Time
LAO =
tAd = Temp Alarm Delay
Adr = Mod Bus Address
Unt = Units for temp display
Press ENTER & use arrows
to change value
Press & hold ENTER button
Alarms
When amber LED is lit:
SSA = Shorted Sensor Alarm
OSA = Open Sensor Alarm
HtA = High Temp Alarm
LtA = Low Temp Alarm
pn 20679 06/14
B
C
D
E
F
AGWhat’s in the Kit
The following parts are included:
(1) KE2 Temp + Air Defrost controller
(1) temperature sensor - 45”
(1) sensor ziptie
(1) liquid tight cord grip
(4) self-tapping mounting screws
(2) screws for high voltage shield
(1) programming sticker
(1) high voltage shield
A
C
D
E
B
F
G
Use and to change the setpoint
Use and to scroll through available setpoints.
Access Setpoint mode by pressing and holding until tS (temperature
setpoint) displays on the screen.
ENTER
ENTER
Press to view the current setting.
ENTER
Press to move between the digits to accelerate the changes.
ENTER
Press and hold to conrm each setpoint change.
BACK
Press to escape.
INDICATOR
LIGHTS:
Red blinking – Real Time Clock battery needs to be replaced
Yellow light – non-critical alarm (system running)
Green light – Liquid Line Solenoid (LLS) relay energized
Green blinking – waiting on minimum run or o timer to start/stop refrigeration
tS = Temperature Setpoint
diF = Dierential
CSH = Compressor Starts/Hour, Maximum
dPd = Defrost Per Day
dFt = Defrost Time
HAO = High Alarm Oset
LAO = Low Alarm Oset
tAd = Temp Alarm Delay
Adr = Mod Bus Address
Unt = Units for temp display (FAH or CEL)
Setpoints
Only visible if
CUS (custom) is
selected for dPd
(Defrost per day)
Alarms - When amber LED is lit:
SSA = Shorted Sensor Alarm
OSA = Open Sensor Alarm
HtA = High Temp Alarm
LtA = Low Temp Alarm
tOd
d1
d2
d3
d4
d5
d6
d7
d8
d9
d10
d11
d12
Controller Navigation
Complete Instructions Locations
Visit: http://ke2therm.com/product/ke2-temp-defrost/
and click the Link to Literature button QR code:
KE2 Temp Literature
— OR —
KE2 Temp Videos
Basic Setpoints
Setpoint Description Minimum Default Maximum
tS Temperature Setpoint -50°F (-45°C) 35°F 100°F (38°C)
diF Dierential 1°F (1K) 2°F 30°F (17K)
CSH Max. Comp. Starts/Hr. 5 (O)* 6 10
dPd Defrost Per Day 0 6 12, CUS**
dFt Defrost Time 0 min 15 min 720 min
HAO High Alarm Oset 1°F (1K) 5°F 10°F (6K)
LAO Low Alarm Oset 1°F (1K) 3°F 10°F (6K)
tAd Temp Alarm Delay 1 min 90 min 180 min
Adr Mod Bus Address 1 1 247
Unt Units for temp display FAH FAH CEL
*Selecting fewer than 5 compressor starts per hour results in the starts per hour feature
being turned o. The compressor will then function on temperature only.
** Selecting CUS (custom) unlocks additional Setpoints. See Advanced Setpoints table.
For a complete list of setpoints and descriptions see Q.3.20.
conduit to go between the controller & evaporator
(2) conduit connectors (straight or elbow as required)
(4) high voltage wires (matched to the load of the liquid line solenoid/
compressor and the controller.)
wire labeling (numbers, colors, etc.)
additional wire ties
18 gauge twisted shielded pair (if extending sensor wires)
Cat5e or cable rated for RS-485 communication (if adding
communication)
foam insulation (if running wires outside the space)
silicone (for sealing any box penetrations)
H
H
Q.3.65 April 2022
Page 2
KE2 Temp + Air Defrost
Condensed Quick Start Guide PN 20611
Q.3.65 April 2022 supersedes all prior publications
KE2 Therm Solutions
12 Chamber Drive . Washington, MO 63090
1-888-337-3358 . www.ke2therm.com
© Copyright 2022 KE2 Therm Solutions, Inc., Washington, Missouri 63090
4.50
6.68
2.30
2.79
0.20
Hole
1.09
Top View
End View
2.14
2.30
Dimensions - Inches Wiring Diagram
Ribbon
Cable
Air Temp Sensor
120 (208 - 240)/1/60
CONTROLLER POWER SUPPLY
Neutral (L2)
NC
115/230
VAC
A B SH
RS 485
+ -
PWR CB
2 3 4 51
COM
NO
Relay
Put jumper
wire from
L1(terminal 1)
to COM
(terminal 5)
Observe proper orientation
of Ribbon Cable connection.
LLS (Liquid Line Solenoid) or
COMPRESSOR CONTACTOR
L1
Temp 1
Ribbon
Cable
Air Temp Sensor
120 (208 - 240)/1/60
CONTROLLER POWER SUPPLY
Neutral (L2)
NC
115/230
VAC
A B SH
RS 485
+ -
PWR CB
2 3 4 51
COM
NO
Relay
Observe proper orientation
of Ribbon Cable.
LLS (Liquid Line Solenoid) or
COMPRESSOR CONTACTOR
L1
Temp 1
+
_
LLS (Liquid Line Solenoid) or
COMPRESSOR CONTACTOR
POWER SUPPLY
Reference relay specifications
for Voltage and Current
Alternate Wiring Method
Select correct
voltage for
controller power:
115 or 230V
  • Page 1 1
  • Page 2 2

KE2 thermsolutions + Air Defrost Controller User guide

Brand
KE2 thermsolutions
Model
+ Air Defrost Controller
Type
User guide

KE2 thermsolutions + Air Defrost Controller is designed for medium-temperature applications with air defrost. It offers precise temperature control, advanced alarm systems, and flexible defrost scheduling. With its user-friendly interface, you can easily set the temperature setpoint, differential, compressor starts per hour, defrost cycles per day, and defrost time. The controller also features high and low-temperature alarms, a temperature alarm delay, and a Modbus address for communication.

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