Watson & Sons 520DUN user manual Outputs, Parameters are, Run / stop, General alarm, Leak detected

18.10 Outputs

The 520DuN pump offers four relay status outputs. See 12 Switching the pump on for the first time for initial startup defaults. Each of five parameters can be config- ured to any output, or more than one output.

The parameters are:

Run / stop

Provides a status output to indicate whether the pumphead is in a running or stopped condition. When running at 0rpm, the run / stop output indicates run- ning.

Direction

Provides a status output to indicate which direction the pump is set to run in.

Auto / man

Provides a status output to indicate whether the pump is in analogue control mode or manual control mode.

General alarm

Provides an alarm output when any system error condition occurs except: leak detected; analogue signal out of range; analogue over-signal; analogue no sig- nal.

Leak detected

When used with a leak detector, this output provides an alarm when the pump has been automatically switched off following tube failure.

Outputs 1-4 are available as single-pole change-over relay contacts: Relay 1, 2, 3 and 4. Connect to the normally open or normally closed contacts of the relay as required and configure the pump’s software accordingly. See below in this section.

Note: The maximum rating on the relay contacts of this pump is 30VDC; maximum load 30W.

Watson-Marlow 520DuN IP66/NEMA 4X User Manual 46