Watson-Marlow 520Du - Manual (Page 73)

Watson-Marlow 520DuN IP66/NEMA 4X User Manual 73
22.11 Supply voltages
In the table below, “Max load” is the maximum total load on each supply irrespec-
tive of the number of connections.
Note: All DC supplies are stabilised except the +22.5V.
DC
Voltage Max
load Lower
D Upper
D
Typical use
+5V 10mA 9, 19,
23 18, 19 Voltage supply for inputs using
remote switch.
Possible voltage supply for outputs if
only 5V is required.
Pin 9 is specifically used for
footswitch / handswitch operation
+12V 10mA 25 21 Possible voltage supply for inputs using
remote switch.
Possible voltage supply for outputs.
Voltage supply for Watson-Marlow Tube
Monitor leak detector.
Part voltage supply (-12V also needed)
for the Watson-Marlow proximity switch.
-12V 10mA 24 — Part voltage supply (+12V also needed)
for the Watson-Marlow proximity switch.
+22.5V — 20 Voltage supply for the 520N wash-
down module. Do not use.
+10V 21 — Reference voltage for remote poten-
tiometer speed control. Do not use
as a general supply voltage.