Electrical interface
for fault indicating relay output:
Data Value Unit
Maximum contact load at 24 V and 50/60
Hz:
2 A
Minimum mechanical lifespan: 20,000,000 switching
operations
for semiconductor switch pacing relay:
Data Value Unit
Max. residual voltage at I
off max
= 1 µA 0.4 V
Maximum current 100 mA
Maximum voltage 24 VDC
Pacing pulse duration, approx. 100 ms
To pin VDE cable Contact Relay
1 yellow NO (normally open) other relay
4 green C (common) other relay
3 white NO (normally open) Pacing relay
2 brown C (common) Pacing relay
9.2.5.4 Output "Current output plus relay" (identity code C)
A relay combined with a current output can optionally be ordered. The
relay either switches off the pump as a fault indicating relay in the event of
a fault on the pump and with "Liquid level low 1st stage" warning message
and "Liquid level low 2nd stage" fault messages or is used as a pacing
relay.
The behaviour is factory-programmed. If another switching function is
required, the pump can be reprogrammed in the
‘Relay’
menu.
In the
‘ANALOG OUTPUT’
menu, the variable to be signalled by the cur‐
rent output can be selected.
The current output plus relay can be retrofitted and operates once it is
plugged into the board.
Fig. 24: Cable assignment
Identity code 4
Fig. 25: Pump assignment
Installation, Electrical
40
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