2
ŶControl specifications
Item Specifications
Cooling performance -80(1/2H temp, AT 30, no load)
Temperature control range -60~-80(AT5~30, no load)
Temperature controller Microprocessor controlled system: Key-pad input
Temperature set range: -55~-85(1increment)
Set value kept in non-volatile memory
Temperature sensor Pt.1000ǡ
Temperature display LED digital display㧔1increment㧕
High temp. Selectable +5~+20for high temp. alarm (Initial; +10)
ALARM lamp blinks and intermittent buzzer sounds with
15min.of delay
Remote alarm contact: Normal Open, rating 30VDC, 2A
Temperature alarm turns on during power failure
(not linked with buzzer)
Low temp. Selectable -5~-20for low temp. alarm (Initial; -10)
ALARM lamp blinks and intermittent buzzer sounds with
15min.of delay
Remote alarm contact: Normal Open, rating 30VDC, 2A
Temperature alarm turns on during power failure
(not linked with buzzer)
Power failure ALARM lamp blinks with intermittent buzzer sounds, remote
alarm outputs.
Remote alarm 3P remote alarm terminal: Maximum 30VDC, 2A
NC-COMޔNO-COM
Outputs during temperature alarm and power failure alarm.
Battery check BATTERY lamp is lit when accumulation time is about 3 yrs
Alarms
Fan motor check BATTERY lamp blinks when accumulation time is about 6 yrs
Control panel Lamp: ALARM, BATTERY
BUZZER: Buzzer key
ALARM TEST: Alarm test key
SET: To switch SV and PV
㧪: To shift the digit
ȁ: To change the digit
Key lock function With 㧪key is pressed for 5 seconds;
L0: Unlocked L1: Locked
Temp. control sensor abnormality
zError code and chamber temp. are alternately displayed.
zRemote alarm contact is ON and the buzzer sounds.
Self diagnosis function
Fan motor malfunction
zError code and chamber temp. are alternately displayed.
zALARM lamp blinks and buzzer sounds.
Power switch Breaker switch
Compressor protection Internal thermostat and comp. sensor
