Electrical interface
Specification
Value
Supply voltage, approx.:
+5 V, loadable with 20 mA (current limit
150 mA)
Power consumption:
min. 10 mA, max. 20 mA (sensor pres‐
ence detection)
Sensor signal:
potential-free contact (load: 0.5 mA at
+5 V) or
Semiconductor switch (residual voltage
< 0.3 V)
Pin
Function
4-wire cable
1
Power supply (5 V)
brown
2
not assigned
white
3
Sensor signal
blue
4
Earth / GND
black
9.2.5 Relay
9.2.5.1
Relay functions
gamma/ X GMXa
Identity code
Description
Type
Maximum voltage Maximum cur‐
rent
Behaviour of relay
type when retrofit‐
ting, as standard
0
no relay
-
-
-
-
1
Fault indicating
relay
NC changeover
contact
230 V
8 A
X
4
fault indicating relay
+
Pacing relay
N/O
N/O
24 V
24 V
100 mA
100 mA
X
X
C
fault indicating relay
+ 4-20 mA output
N/O
24 V
100 mA
X
Relay type switches in the event of...
Relay type*
Level
Warning
Level
low
Dosing monitor
Error
Calibrated
stroke length
Error
Processor
Error
Fault indicating relay:
X
X
X
X
X
Warning relay:
X
-
-
X
-
* Can be reprogrammed in the
‘Relay’
menu.
9.2.5.2
"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.
2
1
3
4
P_DE_0011_SW
Fig. 20: Pump assignment
2
1
3
4
P_DE_0012_SW
Fig. 21: Cable assignment
Installation, Electrical
38
