12.5 Technical data
Inputs 17 configurable inputs for temperature sensor Pt 1000/Pt 100,
PTC/Pt 100, NTC/Pt 100, Ni 1000/Pt 100 or Pt 500/Pt 100 and binary
inputs,
Input 17 alternatively for flow rate signal from the heat meter or demand
signal from supplementary circuits,
4(0) to 20 mA with 50
Ω
parallel resistor or 0 to 10 V
(demand: 0 to 10 V correspond with 20 to 120 °C flow temperature)
Outputs 3 x three-step signal: load max. 250 V AC, 2A
Alternatively on/off signal: load max. 250 V AC, 2A
Alternatively continuous-action output: 0 to 10 V, load > 5 k
Ω
5 x pump output: load max. 250 V AC, 2A; all outputs relay outputs with
varistor suppression
2 x semiconductor relay: load max. 24 V AC/DC, 50 mA
Interfaces
Device bus
System bus
Meter bus
RS-485 interface for max. 32 bus devices
(2-wire connection, polarity independent, connection as required to termi-
nals 29/30 or together with two-wire system bus via cable converter
1400-8800)
RS-232 interface for modem or point-to-point connection to the PC
(Modbus RTU protocol, data format 8N1, RJ45 connector at the side)
Optional:
– RS-485 interface for four-wire bus using cable converter 1400-7308
– RS-485 interface for two-wire bus using cable converter 1400-8800
Meter bus plug-in module, protocol according to EN 1434-3
(optional, also suitable for retrofitting)
Operating voltage 165 to 250 V, 48 to 62 Hz, max. 5 VA
Ambient temperature 0 to 40 °C (operation), –10 °C to 60 °C (storage and transport)
Degree of protection IP 40 according to IEC 529
Class of protection II according to VDE 0106
Degree of contamination 2 according to VDE 0110
Overvoltage category II according to VDE 0110
Humidity rating F according to VDE 40040
Noise immunity According to EN 61000-6-1
Noise emission According to EN 61000-6-3
Weight Approx. 0.5 kg
164 EB 5579 EN
Appendix
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