Menu setting Effect
Timer The relay switches when requested by the timer.
Fault The relay switches in the event of an error message (red LED*).
Warning The relay switches in the event of a warning message (yellow LED*).
Warning + error (fault indicating
relay)
The relay switches in the event of a warning message (yellow LED*) or
an error message (red LED*).
Warning + error + stop The relay switches in the event of a warning message (yellow LED*),
when stopped by
[Start/Stop]
or in the event of a fault message (red
LED*).
Pump active The relay switches as soon as the pump is in standby and not stopped
and not in a state like
‘Pause’
or if an error is pending.
In the opposite case, the relay switches back again.
Stroke rate** (pacing relay) The relay switches with every stroke.
Cycle quantity** (pacing relay) The relay always switches when the set cycle quantity has been
reached.
Metering / Batch The relay changes its state as soon as a batch has been processed.
Degassing*** The relay opens an optionally installed bleed valve as soon as the con‐
trol activates it.
* see the "Troubleshooting" chapter
** only use
‘Relay 2’
for this relay type (semiconductor relay).
*** only use
‘Relay 1’
for this relay type.
You can set here how a relay is to switch.
Menu setting Effect
Break contact N/C The relay is closed in normal mode and opens with a triggering event. (N/C)
Make contact N/O The relay is open in normal mode and closes with a triggering event. (N/O)
9.3.6.2 "Fault indicating relay" output (identity code 1)
A fault indicating relay can be ordered as an option - refer to
ordering information in the appendix. It is used to emit a signal
when there is a fault with the pump and for the "Liquid level low,
1st stage" warning message and "Liquid level low 2nd stage" fault
message.
The fault indicating relay can be retrofitted and is operational once
attached to the relay board - refer to "Retrofitting relays" supple‐
mentary operating instructions.
The behaviour is factory-programmed. If another switching function
is wished, the pump can be reprogrammed in the
‘Relay’
menu.
The relay can be retrofitted and is operational once it has been
plugged into the relay board.
Relay polarity
Installation, electrical
43
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