Service manual

MDS E-SCAN MONITOR DIAGNOSTIC RELAY SELECTION
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5.9 Diagnostic Relay Selection
The “Relays” option activates the following display:
There are eleven total relays, six
of which are inputs. Four input
relays are activated by the MPR
E-Scan units when the Isolation
Valves are closed or when there
are purge failures. One input is
activated by pressing the reset
button attached to the door of the
MDS E-Scan cabinet. The
remaining input is activated
when the divert button is pressed
on the Remote Status Panel, or
when any other remote divert is
configured. Relays 6, 7, 8, 13,
14 and 15 are inputs.
The remaining relays are activated by the Monitor and are as follows:
Relay #01-Divert:
This is activated to create a divert condition.
Relay #02-Common Error:
This is activated for all error conditions, whether they are Monitor or MPR errors.
Relay #03-Unit1 Error:
This is activated only for errors associated with MPR E-Scan unit 1 and is accompanied by an
error message in the Monitor Unit1 status box while in normal mode.
Relay #04-Unit2 Error:
This is activated only for errors associated with MPR E-Scan unit 2 and is accompanied by an
error message in the Monitor Unit 2 status box while in normal mode.
Relay #05-Common Warning:
This is activated for all system warning conditions and is accompanied by a warning message in
the Monitor status box while in normal mode.
Diagnostics Relay Screen