Digital Inputs - GE 469 Instruction Manual

CHAPTER 2: INTRODUCTION
NoteNote 1
2.2.4

Digital Inputs

469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
VOLTAGE PHASE REVERSAL
Configuration: .................................................ABC or ACB phase rotation
Timing Accuracy: ..........................................500 to 700 ms
Elements:............................................................Trip
NOTE 1
For Timing accuracy specifications marked (Note 1), setpoint "Motor Load Filter Interval"
may increase trip/alarm times. When setpoint is greater than 1 cycle, trip/alarm times
increase 16.7 ms for each additional cycle in the filter interval.
DIGITAL COUNTER
Configuration: .................................................assign to digital inputs 1 to 4
Frequency: .............................................≤50 times a second
Range:..................................................................0 to 1 000 000 000
Elements:............................................................Alarm
GENERAL PURPOSE SWITCH
Configuration: .................................................assign to digital inputs 1 to 4
Time delay:........................................................0.1 to 5000.0 s in steps of 0.1
Block from start: ............................................0 to 5000 s in steps of 1
Timing accuracy: ...........................................±250 ms or ±0.5% of total time
Elements:............................................................Trip and Alarm
LOAD SHED
Configuration: .................................................assign to digital inputs 1 to 4
Timing accuracy: ...........................................100 ms maximum
Elements:............................................................Trip
PRESSURE SWITCH
Configuration: .................................................assign to digital inputs 1 to 4
Time delay:........................................................0.1 to 100.0 s in steps of 0.1
Block from start: ............................................0 to 5000 s in steps of 1
Timing accuracy: ...........................................±250 ms or ±0.5% of total time
Elements:............................................................Trip and Alarm
REMOTE SWITCH
Configuration: .................................................assign to digital inputs1 to 4
Timing accuracy: ...........................................100 ms maximum
Elements:............................................................Trip and Alarm
SPEED SWITCH
Configuration: .................................................assign to digital inputs1 to 4
Time delay:........................................................1.0 to 250.0 s in steps of 0.1
Timing accuracy: ...........................................250 ms maximum
Elements:............................................................Trip
TACHOMETER
Configuration: .................................................assign to digital inputs 1 to 4
Range:..................................................................100 to 7200 RPM
Pulse duty cycle: ............................................>10%
Elements:............................................................Trip and Alarm
VIBRATION SWITCH
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