GE Multilin 469 User Manual

54 469 MOTOR MANAGEMENT RELAY – QUICK REFERENCE GUIDE
SYSTEM DATA QUICK REFERENCE GUIDE
12.11 Digital Inputs Setpoints
The S3 setpoints page is for entering the characteristics of the digital inputs. In our
example, these characteristics are specified under the Control System Requirements
heading. Program the S3 setpoints as indicated.
Some of the functions assigned to the digital inputs of the 469 Motor Management Relay
are pre-defined functions, which can be selected from a list. There are four user-defined
functions, called General Switch A to D, associated to the assignable inputs. Set these
inputs to operate output relays, with or without delay, responding to the status change of
dry contacts connected to the digital input terminals. Use the following procedure to set
these functions:
1. Change the default names to meaningful values so they can be easily identified, either
via the LCD or when reviewing event reports.
2. Identify their asserted logic.
3. Define the functionality of the digital inputs.
All the other assignable input functions are pre-defined, and when selected, they can be
set to generate Trip or Alarms, as well as to energize auxiliary outputs as needed.
For breaker position monitoring, set the following pre-defined Digital Input called “Starter
Status”. As per the information provided above, a 52b contact will be used, and must be
connected between terminals D16 to D23:
S3 DIGITAL INPUTS ZV STARTER STATUS Z STARTER STATUS SW: “Starter Auxiliary b”
To set the relay to monitor access to the station, use Assignable Input 1 as “General Switch
A”, as follows. To define the digital input, enter the following data in the
S3 DIGITAL INPUTS
ZV ASSIGNABLE INPUT 1 setpoints page.
To identify the digital input:
INPUT 1 FUNCTION: “General Sw. A”
SWITCH NAME: “Stn. Monitor”
To define the asserted logic:
GENERAL SWITCH A: “Normally Open”
To define the functionality:
BLOCK INPUT FROM START: “0 s”
GENERAL SWITCH A ALARM: “Latched”
ASSIGN ALARM RELAYS: “Alarm”
GENERAL SWITCH A ALARM DELAY: “5.0 s”
GENERAL SWITCH A EVENTS: “On” so this event is registered.
GENERAL SWITCH A TRIP: “Off”
If the relay will not be used to trip the motor when someone gain unauthorized access to
the station, the next setpoints shall be left with their default values:
GENERAL SWITCH A TRIP: “Off”
ASSIGN TRIP RELAYS: “Trip”
GENERAL SWITCH A TRIM DELAY: “5.0 s”

GE Multilin 469 Specifications

General

Brand	GE
Model	Multilin 469
Category	Relays
Language	English