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12.4
Technical data
Inputs
Outputs*
Optional interfaces
Operating voltage
Ambient temperature
Degree of protection
Class of protection
Degree of contamination
Overvoltage category
Humidity rating
Noise immunity
Noise emission
Weight
* A maximum of 4 pump outputs are available for systems with one control circuit.
8 inputs for Pt 1000 temperature sensors and 2 binary inputs,
Input at terminal 11 for a 0 to 10 V demand signal from supplementary
circuits (0 to 10 V correspond with 20 to 120 °C flow temperature)
2 x three-step signal: load max. 250 V AC, 2A
Alternatively 2 x on/off signal: load max. 250 V AC, 2 A
3 x pump output: load max. 250 V AC, 2A
all outputs as relay outputs with varistor suppressor
Input at terminal 11 can alternatively be used as a 0 to 10 V output signal
for continuous-action control circuit Rk1 or for demand signal, load > 5 kΩ
1 x Modbus RS-232 interface for modem using RS-232/modem
communication module
1 x Modbus RS-485 interface for two-wire bus using RS-485
communication module
(Modbus RTU protocol, data format 8N1, RJ-45 jack at the side)
85 to 250 V, 48 to 62 Hz, max. 1.5 VA
0 to 40 °C (operation), –10 °C to 60 °C (storage and transport)
IP 40 according to IEC 529
II according to VDE 0106
2 according to VDE 0110
II according to VDE 0110
F according to VDE 40040
According to EN 61000-6-1
According to EN 61000-6-3
Approx. 0.5 kg
Appendix
113
EB 5573 EN
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