Analog In Diff 1-2 - GE 469 Instruction Manual

4 SETPOINTS
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PATH: SETPOINTS S12 ANALOG I/O
n ANALOG IN DIFF 1-2
n [ENTER] for more
This feature compares two analog inputs and activate alarms or trips based on their difference, which can be an absolute
difference in units or a percentage difference. The second analog input (2 for 1-2) is used as the reference value for per-
centage calculations. The comparison logic can also be selected as one input greater than the other ("1>2") or vice versa
("2>1") or as absolute difference ("1<>2"). The compared analog inputs must be programmed with the same units type prior
to programming this feature.
For example, two motors on a dual motor drive are each protected a 469. The motors should be at the same power level
(kW). Connect the analog outputs (programmed for kW) from both relays to the analog inputs of one relay. Program the
analog input differential to monitor the two motors kW and trip at a predetermined level.
GE Multilin
Courtesy of NationalSwitchgear.com
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ANALOG IN DIFF 1–2
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ANALOG IN DIFF 1-2:

ENTER
ESCAPE Disabled
ANALOG IN DIFF 1-2
ESCAPE
NAME: Analog 1-2
MESSAGE
ANALOG IN DIFF 1-2
ESCAPE
COMPARISON: % Diff
MESSAGE
ANALOG IN DIFF 1-2
ESCAPE
MESSAGE LOGIC: 1<>2
ANALOG IN DIFF 1-2
ESCAPE
MESSAGE ACTIVE: Always
A/I DIFF 1-2 BLOCK
ESCAPE
FROM START: 0 s
MESSAGE
ANALOG IN DIFF 1-2
ESCAPE
ALARM: Off
MESSAGE
ASSIGN ALARM RELAYS:
ESCAPE
Alarm
MESSAGE
ANALOG IN DIFF 1-2
ESCAPE
ALARM LEVEL: 10%
MESSAGE
A/I DIFF 1-2 ALARM
ESCAPE
LEVEL: 10 Units
MESSAGE
ANALOG IN DIFF 1-2
ESCAPE
ALARM DELAY: 0.1 s
MESSAGE
ANALOG IN DIFF 1-2
ESCAPE
EVENTS: Off
MESSAGE
ANALOG IN DIFF 1-2
ESCAPE
TRIP: Off
MESSAGE
ASSIGN TRIP RELAYS:
ESCAPE
Trip
MESSAGE
ANALOG IN DIFF 1-2
ESCAPE
TRIP LEVEL: 10%s
MESSAGE
ANALOG IN DIFF 1-2
ESCAPE
TRIP LEVEL: 10 Units
MESSAGE
ANALOG IN DIFF 1-2
ESCAPE
TRIP DELAY: 0.1 s
MESSAGE
469 Motor Management Relay
4.13 S12 ANALOG I/O
4.13.3 ANALOG IN DIFF 1-2
Range: Disabled, Enabled
Seen only if Analog Inputs 1 and 2 are enabled.
Range: 12 alphanumeric characters
Seen only if Analog Inputs 1 and 2 are enabled.
Range: % Diff, Abs. Diff
Seen only if Analog Inputs 1 and 2 are enabled.
Range: 1<>2, 1>2, 2>1
Seen only if Analog Inputs 1 and 2 are enabled.
Range: Always, Start/Run
Seen only if Analog Inputs 1 and 2 are enabled.
Range: 0 to 5000 s in steps of 1
Seen only if Analog Inputs 1 and 2 are enabled.
Range: Off, Latched, Unlatched
Seen only if Analog Inputs 1 and 2 are enabled.
Range: Alarm, Alarm & Auxiliary2, Alarm & Aux2 & Aux3,
Alarm & Auxiliary3, Auxiliary2, Aux2 & Aux3,
Auxiliary3
Range: 0 to 500% in steps of 1. Seen only if Analog
Inputs 1 / 2 are enabled and %Diff is set.
Range: 0 to 50000 Units in steps of 1. Seen only if
Analog Inputs 1 / 2 enabled and Abs Diff is set.
Range: 0.1 to 300.0 s in steps of 0.1
Seen only if Analog Inputs 1 and 2 are enabled.
Range: On, Off
Seen only if Analog Inputs 1 and 2 are enabled.
Range: Off, Latched, Unlatched
Seen only if Analog Inputs 1 and 2 are enabled.
Range: Trip, Trip & Auxiliary2, Trip & Aux2 & Aux3
Trip & Auxiliary3
Range: 0 to 500% in steps of 1. Seen only if Analog
Inputs 1 / 2 are enabled and %Diff is set.
Range: 0 to 50000 in steps of 1. Seen only if Analog
Inputs 1 / 2 enabled and Abs Diff is set.
Range: 0.1 to 300.0 s in steps of 0.1
Seen only if Analog Inputs 1 and 2 are enabled.
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