S2 System Setup - GE 469 Instruction Manual

5.3

S2 System Setup

5.3.1 Current Sensing
 CURRENT
SENSING
Note
Note
5–18

PATH: SETTINGS S2 SYSTEM SETUP
[] PHASE CT PRIMARY:
Not Programmed
MOTOR FULL LOAD AMPS
MESSAGE
FLA: Not Programmed
GROUND CT:
MESSAGE
50:0.025
GROUND CT PRIMARY:
MESSAGE
100 A
PHASE DIFFERENTIAL
MESSAGE
CT: None
PHASE DIFFERENTIAL
MESSAGE
CT PRIMARY: 100 A
ENABLE 2-SPEED MOTOR
MESSAGE
PROTECTION: No
SPEED2 PHASE CT
MESSAGE
PRIMARY: 100 A
SPEED2 MOTOR
MESSAGE
FLA: 1 A
The setting is not seen if the
GROUND CT PRIMARY
"5A Secondary". The
PHASE DIFFERENTIAL CT PRIMARY
is set to "1A Secondary" or "5A Secondary".
DIFFERENTIAL CT
The
SPEED2 PHASE CT PRIMARY
motor protection is enabled.
As a safeguard,
PHASE CT PRIMARY
Programmed" when shipped. A block start indicates the 469 was never programmed. Once
and
PHASE CT PRIMARY MOTOR FULL LOAD AMPS
phase CT should be chosen so the FLA is no less than 50% of the rated phase CT primary.
Ideally, the phase CT primary should be chosen so the FLA is 100% of the phase CT primary
or slightly less, never more. The secondary value of 1 or 5 A must be specified at the time of
order so that the proper hardware is installed. A value for
must also be entered. The value may be taken from the motor nameplate data sheets. The
service factor may be entered as overload pickup (see S5 Thermal Model on page 5–38).
For high resistance grounded systems, sensitive ground current detection is possible if the
50:0.025 ground CT input is used. To use the 50:0.025 input, select "50:0.025" for the
settings. No additional ground CT messages will appear. On solidly grounded
GROUND CT

CURRENT SENSING
Range: 1 to 5000 A in steps of 1. Values
Range: 1 to 5000 A in steps of 1. Values
Range: None, 1A Secondary, 5A
Range: 1 to 5000 A in steps of 1
Range: None, 1A Secondary, 5A
Range: 1 to 5000 in steps of 1
Range: No, Yes
Range: 1 to 5000 A in steps of 1
Range: 1 to 5000 A in steps of 1
GROUND CT
is not seen if the
and settings are seen only if two-speed
SPEED2 MOTOR FLA
and
MOTOR FULL LOAD AMPS
are entered, the alarm resets itself. The
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
≥5001 denote not
≥5001 denote not
Secondary, 50:0.025
Secondary
is set to "1A Secondary" or
PHASE
are defaulted to "Not
(FLA)
MOTOR FULL LOAD AMPS