This series represents the ideal solution for the management of static refrigeration
units (that is, without evaporator fans) operating at normal temperatures (above
0°C). These instruments perform the functions of thermometer, displaying
the temperature of the unit, and electronic thermostat, activating the compressor
(or the solenoid valve in the case of multiplexed units) in order to maintain
the set temperature. In addition, they automatically defrost the units by stopping
the compressor. These controllers can be used as simple thermostats for the
temperature control of cooling actuators (compressors) and heating actuators
(heaters): in fact, “Direct” (cooling) or “Reverse”
(heating) operation is selected by simply modifying a parameter or activating
the corresponding digital input.
Technical features
Power supply
IR33S00*: 12 Vac (-15% to +10% ) or 12 Vdc
(0% to +50%), 50/60 Hz IR33S0L*: 12/24 Vac (-15% to +10% ), 50/60 Hz IR33S0E*: 230 Vac (-15% to +10% ), 50/60 Hz IR33S0H*: 115/230 Vac (-15% to +10% ), 50/60 Hz
Operating conditions
-10T65 °C, <90% rH non-condensing
Storage conditions
-20T70 °C, <90% rH non-condensing
Regulation range
-50T90 °C with standard CAREL NTC probes
-40T150 °C wide range NTC probes;
-50T150 °C with PTC probes
Inputs
IR33S00*/L*/H*: 2 for NTC or PTC probes, 2 digital inputs IR33S0E*: 2 for NTC or PTC probes, 1 digital inputs
Outputs
IR33S00*/L*: 1 relay 250 Vac, 12 (2) A res. o 2 relay
250 Vac, 12 (2) A e 8 (4) A res. IR33S0E*: 1 relay 250 Vac, 8 (4) A res., 2 relay 250 Vac,
8 (4) A res. oppure 1 relay 250 Vac, 12 (2) A e 1 relay 250 Vac, 5 (1) A
res. IR33S0H*: 2 relay 250 Vac, 12 (2) A e 8 (4) A res.
