GE Multilin 489 User Manual

CHAPTER 7: TESTING
489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL 7–9
7.2.7 Digital Inputs and Trip Coil Supervision
The digital inputs and trip coil supervision can be verified easily with a simple switch or
pushbutton. Verify the Switch +24 V DC with a voltmeter. Perform the steps below to verify
functionality of the digital inputs.
Z Open switches of all of the digital inputs and the trip coil supervision
circuit.
Z View the status of the digital inputs and trip coil supervision in the
A1
STATUS
ZV DIGITAL INPUTS menu.
Z Close switches of all of the digital inputs and the trip coil supervision
circuit.
Z View the status of the digital inputs and trip coil supervision in the
A1
STATUS ZV DIGITAL INPUTS menu.
7.2.8 Analog Inputs and Outputs
The specification for analog input and analog output accuracy is ±1% of full scale. Perform
the steps below to verify accuracy. Verify the Analog Input +24 V DC with a voltmeter.
4 to 20 mA Inputs:
Z In the S11 ANALOG I/O ZV ANALOG INPUT 1 menu, set:
ANALOG INPUT 1: “4-20 mA”
ANALOG INPUT 1 MINIMUM: “0”
ANALOG INPUT 1 MAXIMUM: “1000” (repeat all for Analog Inputs 2 to 4)
Analog output values should be ±0.2 mA on the ammeter. Measured analog input
values should be ±10 units.
18.73 Ω 250°C 482°F
Applied
Resistance
10 Ω Copper
Expected RTD
Temperature Reading
Measured RTD Tempeature
Select One: ____°C ____°F
°C °F 123456789101112
Input Expected Status
(Switch Open)
4 Pass
8 Fail
Expected Status
(Switch Closed)
4 Pass
8 Fail
Access Open Shorted
Breaker Status Open Shorted
Assignable Input 1 Open Shorted
Assignable Input 2 Open Shorted
Assignable Input 3 Open Shorted
Assignable Input 4 Open Shorted
Assignable Input 5 Open Shorted
Assignable Input 6 Open Shorted
Assignable Input 7 Open Shorted
Trip Coil Supervision No Coil Coil
Courtesy of NationalSwitchgear.com

GE Multilin 489 Specifications

General

Brand	GE
Model	Multilin 489
Category	Relays
Language	English