Westinghouse 1X00781H01L, four power supplies and one distribution version

Description

For the Ovation 1X00781H01L single-loop interface module, the digital inputs perform the runback

function. The digital inputs are used as priority raise or lower for the output. Priority

action takes precedence over any output request from the 1X00781H01L Controller or SLIM.

Runbacks may be used with either of the two module types (Normal (non-electric)

or Electric Drive).

If desired, digital inputs can be disabled as runbacks and used as user-defifined

points. In order to disable 1X00781H01L digital inputs as runback functions, the module must be

confifigured per instructions on drawing 1C31174 (Groups 21-24).

The single-loop interface module 1X00781H01L may communicate to the Small Loop Interface

Module (SLIM) via its RS-422 serial port. The serial port connector is located on

the personality module. Alternatively, the serial port wiring may be connected

directly at the terminal block.

A single SLIM will communicate with one loop interface 1X00781H01L module. Multiple-loop

interface modules per single SLIM are not supported. SLIMs are not required for

the loop interface module operation. (The loop interface module may be used

without a SLIM.)

A wire jumper between terminals IAO and logic GND can be used to set the analog

output to Inverse Operation.

Normal (default – no wire installed) operation of the analog output means that when

the output 1X00781H01L value is 0% (as seen at the SLIM or Controller), the analog output is a

minimum (0V for groups 1 and 2, or 4mA for groups 3 and 4 modules.) When the

output value is 100%, the actual analog output is at its maximum value (+10V for

group 1, +5V for group 2, and 20mA for groups 3 and 4 modules).

Inverse (wire jumper installed) operation of the analog output means that when the

output value is 0% (as seen at the SLIM or Controller), the analog output is a

maximum (+10V for group 1, +5V for group 2, and 20mA for groups 3 and 4

modules). When the output value is 100%, the analog output is its minimum value

(0V for groups 1 and 2, or 4mA for groups 3 and 4 modules).

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