Watson-Marlow 520DUN User Manual - 22.12 Outputs 1, 2, 3, 4

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

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Important: pump status outputs

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 18.10 Outputs.

Note: The maximum rating on the relay contacts of this pump is 30V

DC; maximum load 30W. 

Note: Also suitable for low power: ie, 1mA at 5VDC minimum.

22.12 Outputs 1, 2, 3, 4

Note: Relay 1 (J14) is represented here. Relay 2, Relay 3

and Relay 4 (J15, J16 and J17) function identically.

Connect your output device to the c (common) terminal

of your chosen relay connector and either the n/c termi-

nal or the n/o terminal (normally closed or normally

open) as required. Configure the pump’s software accord-

ingly. See 18.10 Outputs.

By default, Relay 1 is configured to indicate Run/Stop sta-

tus; Relay 2 is configured to indicate Direction status;

Relay 3 is configured to indicate Auto/man status; Relay

4 is configured to indicate General alarm status. See 12

Switching the pump on for the first time.

22.13 Supply voltages

An appropriate voltage supply is available where required

on each connector. In addition, supplies may be drawn

from the Spare supplies connector (J12).

In the table below, “Max load” is the maximum total load

on each supply, irrespective of the number of connections.