Product Overview

Key Features:
• The PSK231 controller manages
medium temperature refrigeration
units by controlling a compressor
and sensing temperature
• Single digital output (relay):
30A compressor
1HP @ 120VAC
2HP @ 230VAC
• Alarm buzzer and TTL serial port
(RS485 Modbus
®
)
• 1 NTC/PTC temperature sensor
input
• 1 multipurpose input (congure
as switch or temperature sensor)
• IP65 front panel protection
• 3-1/2 digit display shows decimal
point values (in Celsius mode) at
-10.0° and below
• Easy to understand multicolor
display icons
• Front bezel size:
2.95” x 1.3” (75 x 33 mm)
• Panel cut out:
2.79” x 1.14” (71 x 29 mm)
• Power supply:
(N5) 120VAC 50/60 Hz
(N7) 230VAC 50/60 Hz
Refrigeration Controller
for Medium Temperatures
PSK231N5EXBS
PSK231N7EXBS
Product Overview:
With a high capacity compressor
relay, the PSK231 offers a digital
controller solution for large com-
pressor (up to 2 HP) open and
closed refrigeration units. The
PSK231 also provides increased
functionality with the multifunction
input – which can be configured
for a door switch, an evaporator
temperature sensor (for tempera-
ture terminated defrost), a con-
denser temperature sensor (for
condenser overheat alarm and
compressor lock-out) or to trigger
energy saving mode. Other fea-
tures include temperature alarms
and easy setup with the optional
programming key.
PSK231