Service manual

MDS E-SCAN MPR E-SCAN OPERATION/ DIAGNOSITIC SELECTION

The “Relays” option activates the following display:

There are eight total relays, two

of which are used as inputs

coming from the Monitor and

two are unused. The other four

relays are activated when either

measurement alarms are

occurring or when purging.

Using the Front Panel buttons,

all relays except the input relays

can be tested by toggling the

output conditions and visually

checked by examining the relay

LEDS on the interface board.

Also, by supplying an external

voltage, the operator can test the

custom input relays.

The “Anlg. Out" diagnostic option activates the following display:

There are two standard outputs

that produce a 0 - 10 volt and 4-

20 ma signal and are used for

process measurement and temp.

They are displayed as Analog 1

Out and Analog 2 Out

respectively.

Using the Front Panel buttons,

the operator can test the outputs

in min.., mid., and max., value

conditions. Also by editing the

min. and max. values, the

operator can even calibrate the

output to work more accurately

with various analog loads.

Diagnostics Analog Output Screen

Diagnostics Relay Screen