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12 Technical data
Mains voltage/frequency 230 V AC ± 10% / 50/60 Hz
Rated wattage 2.5 watts
Display 3-digit, 7-segment, red LED, 14.2 mm
Resolution 1 K
Measuring range –55 to +50 °C
Outputs 1 relay with changeover contact, 8 A,
230 V AC, resistive load, (cooling).
1 relay with N.O. contact, 8 A
(5A PCR-300RC), 230 V AC,
resistive load, (defrost heating).
1 relay with N.O. contact, 8 A (5A -PCR-300RC),
230 V AC, resistive load (fan control).
Control response Two-step
Alarm output Opto bidirectional triode thyristor, 250 V AC,
max. load 80mA
Display accuracy ± 0.5K internal, ± 1 digit, at 25 °C
Operating conditions 0 °C to 50 °C, 30 to 85 % R.H., excluding dew
Storage temperature –20 °C to +80 °C
Data back-up Non-volatile memory (EEPROM)
Clock: Back-up battery, approx. 1 month
power reserve (PCR-300 RC only)
Emergency setpoint DIP switch under display cover
selection (off = +4 °C / on = –18 °C)
Sensor type PTC
– Number 2 sensors
T1 = Control signal to compressor relay
T2 = Control signal to defrost limitation and
fan control
– Cable length 2.5 m
– Range where cable –30 °C to +80 °C not fixed
can be used: –40 °C to +80 °C fixed
– Accuracy ± 2 %
Housing L x W x H = 85 x 70 x 61 mm,
ABS plastic, self-extinguishing (UL 94 V0)
Protective rating Housing: IP 20, front panel: IP 52
Class of protection 2
Terminals 250V / 10 A screw-type terminal strips,
with wire protection,
tightening torque 0.6 Nm
Max. core cross section 1.5 mm
2
Weight Approx. 420 g (inc. 2 sensors).
Only operate the unit in dry places.
Errors in the technical data are excepted. We reserve the right to make changes without prior notice.