GE Multilin 469 User Manual (English)

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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”

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GE Multilin 469 Specifications

General

Frequency	50/60 Hz
Mounting	Panel mount
Communication Protocols	Modbus, DNP3, IEC 61850
Protection Functions	Overcurrent, Overload, Undervoltage, Undercurrent, Phase Unbalance, Ground Fault
Display	LCD
Metering	Voltage, Current, Power, Energy, Power Factor, Frequency
Inputs	RTD
Outputs	Digital
Certifications	IEC, UL