Digital Inputs And Trip Coil Supervision - GE 469 Instruction Manual
Motor management
relay
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Also See for 469:
- Instruction manual (348 pages) ,
- Manual (307 pages) ,
- Communications manual (150 pages)
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CHAPTER 7: TESTING
APPLIED
RESISTANCE
100 Ω
NICKEL
167.20 Ω
207.45 Ω
252.88 Ω
305.44 Ω
APPLIED
RESISTANCE
10 Ω COPPER
7.10 Ω
9.04 Ω
10.97 Ω
12.90 Ω
14.83 Ω
16.78 Ω
18.73 Ω
7.2.6
Digital Inputs and Trip Coil Supervision
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
Table 7–3: 100 Ω NICKEL TEST
EXPECTED RTD
TEMPERATURE
READING
°Celsius
°Fahrenheit
100°C
212°F
150°C
302°F
200°C
392°F
250°C
482°F
Table 7–4: 10 Ω COPPER TEST
EXPECTED RTD
TEMPERATURE
READING
°Celsius
°Fahrenheit
–50°C
–58°F
0°C
32°F
50°C
122°F
100°C
212°F
150°C
302°F
200°C
392°F
250°C
482°F
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.
Open switches of all of the digital inputs and the trip coil supervision
circuit.
View the status of the digital inputs and trip coil supervision in:
Close switches of all of the digital inputs and the trip coil supervision
circuit.
View the status of the digital inputs and trip coil supervision in:
MEASURED RTD TEMPERATURE
SELECT ONE: ____(°C) ____(°F)
1
2
3
4
5
MEASURED RTD TEMPERATURE
SELECT ONE: ____(°C) ____(°F)
1
2
3
4
5
ACTUAL VALUES
A1 STATUS
6
7
8
9
10
6
7
8
9
10
DIGITAL INPUTS
11
12
11
12
7–7
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