Starter Status; Assignable Inputs 1(4) - GE 469 Instruction Manual

S3 Digital Inputs

Starter Status

STARTER
STATUS

Assignable Inputs 1(4)

ASSIGNABLE
INPUT 1
ASSIGNABLE
INPUT 2
ASSIGNABLE
INPUT 3
ASSIGNABLE
INPUT 4
GE Multilin
PATH: SETPOINTS S3 DIGITAL INPUTS
[ ] STARTER STATUS SW:
Starter Auxiliary A
This input is necessary for all motors. The 469 determines that a motor has stopped
when the phase current falls below the level that the relay can measure (5% of CT
primary). Monitoring an auxiliary contact from the breaker or contactor prevents the
relay from detecting additional starts when an unloaded motor is loaded, or issuing
a block start after an unloaded motor is started and running at less than 5% CT
rated primary current.
If "Starter Auxiliary A" is chosen, terminals D16 and D23 are monitored to detect
the breaker or contactor state, open signifying the breaker or contactor is open and
shorted signifying closed. The 469 will then determine that a motor has made the
transition from 'running' to 'stopped' only when the measured current is less than
5% CT ratio and the 'a' contact is open.
If "Starter Auxiliary B" is chosen, terminals D16 and D23 are monitored to detect
the breaker or contactor state, open signifying the breaker or contactor is closed
and shorted signifying open. The 469 then determines that a motor has made the
transition from 'running' to 'stopped' only when the measured current is less than
5% CT ratio and the 'b' contact is closed.
a) Main Menu
PATH: SETPOINTS S3 DIGITAL INPUTS
[ ] INPUT 1 FUNCTION:
Off
[ ] INPUT 2 FUNCTION:
Off
[ ] INPUT 3 FUNCTION:
Off
[ ] INPUT 4 FUNCTION:
Off
There are four (4) user-assignable digital inputs configurable to a number of
different functions (see below), or turned Off. Once a function is chosen, any
messages that follow may be used to set pertinent parameters for operation. Each
function may only be chosen once. Assignable Inputs 1 to 4 are activated by
shorting D19 to D22 (respectively) with D23.
The range for the
INPUT 1(4) FUNCTION
Speed Switch Trip, Load Shed Trip, Pressure Sw Alarm, Pressure Switch Trip,
Vibration Sw Alarm, Vibration Sw Trip, Digital Counter, Tachometer, General Sw A,
General Sw B, General Sw C, General Sw D, Capture Trace, Simulate Pre-Fault,
Simulate Fault, Simulate Pre Fault... Fault.
Two-speed motor protection is enabled with the
ENABLE 2-SPEED MOTOR PROTECTION
enabled, Assignable Input 4 is dedicated as the two-speed motor monitor and
terminals D22 and D23 are monitored for a contact closure. Closure of the contact
signifies that the motor is in Speed 2 or High Speed. If the input is open, it signifies
that the motor is in Speed 1. This allows the 469 to determine which setpoints
should be active at any given point in time.
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Motor Management Relay
STARTER STATUS
Range: Starter Auxiliary A,
Starter Auxiliary B
ASSIGNABLE INPUT 1(4)
Range: see below
Range: see below
Range: see below
Range: see below
setpoints is: Off, Remote Alarm, Remote Trip,
S2 SYSTEM SETUP
setpoint. If the two-speed motor feature is
469
CURRENT SENSING
5–21