5–18
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
5.3
S2 System Setup
5.3.1
Current Sensing
PATH: SETTINGS
S2 SYSTEM SETUP
CURRENT SENSING
NOTE
Note
The
GROUND CT PRIMARY
setting is not seen if the
GROUND CT
is set to “1A Secondary” or
“5A Secondary”. The
PHASE DIFFERENTIAL CT PRIMARY
is not seen if the
PHASE
DIFFERENTIAL CT
is set to “1A Secondary” or “5A Secondary”.
NOTE
Note
The
SPEED2 PHASE CT PRIMARY
and
SPEED2 MOTOR FLA
settings are seen only if two-speed
motor protection is enabled.
As a safeguard,
PHASE CT PRIMARY
and
MOTOR FULL LOAD AMPS
are defaulted to “Not
Programmed”
when shipped. A block start indicates the 469 was never programmed. Once
PHASE CT PRIMARY
and
MOTOR FULL LOAD AMPS
are entered, the alarm resets itself. The
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
MOTOR FULL LOAD AMPS
(FLA)
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
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
GROUND CT
settings. No additional ground CT messages will appear. On solidly grounded
CURRENT
[
]
SENSING
PHASE CT PRIMARY:
Not Programmed
Range: 1 to 5000 A in steps of 1. Values
≥
5001 denote not
MESSAGE
MOTOR FULL LOAD AMPS
FLA: Not Programmed
Range: 1 to 5000 A in steps of 1. Values
≥
5001 denote not
MESSAGE
GROUND CT:
50:0.025
Range: None, 1A Secondary, 5A
Secondary, 50:0.025
MESSAGE
GROUND CT PRIMARY:
100 A
Range: 1 to 5000 A in steps of 1
MESSAGE
PHASE DIFFERENTIAL
CT: None
Range: None, 1A Secondary, 5A
Secondary
MESSAGE
PHASE DIFFERENTIAL
CT PRIMARY: 100 A
Range: 1 to 5000 in steps of 1
MESSAGE
ENABLE 2-SPEED MOTOR
PROTECTION: No
Range: No, Yes
MESSAGE
SPEED2 PHASE CT
PRIMARY: 100 A
Range: 1 to 5000 A in steps of 1
MESSAGE
SPEED2 MOTOR
FLA: 1 A
Range: 1 to 5000 A in steps of 1
Summary of Contents for Masoneilan 469 Series
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Page 92: ...3 28 469 MOTOR MANAGEMENT RELAY INSTRUCTION MANUAL CHAPTER 3 INSTALLATION ...
Page 256: ...5 112 469 MOTOR MANAGEMENT RELAY INSTRUCTION MANUAL CHAPTER 5 SETTINGS ...
Page 298: ...6 42 469 MOTOR MANAGEMENT RELAY INSTRUCTION MANUAL CHAPTER 6 ACTUAL VALUES ...
Page 321: ...CHAPTER 8 APPENDIX 469 MOTOR MANAGEMENT RELAY INSTRUCTION MANUAL 8 9 808712A1 CDR ...
Page 330: ...8 18 469 MOTOR MANAGEMENT RELAY INSTRUCTION MANUAL CHAPTER 8 APPENDIX ...