Load Increase Alarm (50L) - GE 339 Instruction Manual

S3 PROTECTION

Load increase alarm (50L)

SETTING
LOAD INCR ALARM
Enabled = 1
Disabled = 0
MOTOR STATUS
Running
SETTINGS
BLOCK 1
OFF = 0
BLOCK 2
OFF = 0 OR
BLOCK 3
OFF = 0
896818.cdr
6–60
The Load Increase Alarm is used to alarm abnormal load increases that may indicate
problems with the process. An alarm is enabled only after the acceleration stage is
complete and the motor has entered the running stage. Once enabled, the alarm is
generated when the motor load exceeds the setting LOAD INCR PKP for the time delay
specified by the setting LOAD INCR DELAY, and automatically resets when the current has
subsided.
PATH: SETPOINTS > S3 PROTECTION > LOAD INCR ALARM
LOAD INCR FUNC
Range: Disabled, Enabled
Default: Disabled
For details see Common
LOAD INCR PKP
Range: 50% to 150% FLA in steps of 1% FLA
Default: 150% FLA
This setting specifies the pickup threshold for the Load Increase Alarm.
LOAD INCR DELAY
Range: 0.00 to 60.00 s in steps of 0.01 s
Default: 1.50 s
This setting specifies the time delay for the Load Increase Alarm.
OUTPUT RELAY X
For details see Common
BLOCK 1 to 3
For details see Common
Figure 6-26: Load Increase logic diagram
SETTING
LOAD INCR PKP
AND RUN
Iavg > Pickup
setpoints.
setpoints.
setpoints.
SETTING
LOAD INCR DELAY
t
PKP
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 6: SETPOINTS
LOGIC OPERAND
LOAD INCR OP
0
ANY ALARM OP
LOAD INCR PKP
ANY ALARM PKP
TARGET MESSAGE
Load Incr Alarm
State: Operate
Load Incr Alarm
State: Pickup