Time Delays; Other Settings - GE LM10 Instruction Manual

CONFIGURATION SETTINGS
4.2.7

Time Delays

4.2.8

Other Settings

4–34
A 6% voltage unbalance equates to a roughly 25% current unbalance and will frequently
cause motor damage.
• LdLoss Setup (load loss setup): Load loss is based on watts, defined as follows:
watts 1.732
=
The power factor is determined using the phase relationship between voltage and phase C
current readings. Full load would be when the average current is at FLA, voltage is at
nominal value, and power factor equals 0.85. This would equate to a load loss level of
LdLoss Setup Fault
100%. The
The motor would need to drop below this level for the preset time to cause the load loss
fault. The relay is shipped with this option disabled.
PATH: Configuration
Configuration
Time Delays
Other Settings
Aux Rly Faults
The time delay settings are described below.
• AuxSns1 and AuxSns2
contactor did not open/close according to its command, an auxiliary sense (AuxSns)
trip failure will be recorded in the fault record and shut down the run relay. This fault is
factory preset at 0.4 seconds. The delay time for closing the relay can be changed
however opening time is set at a constant 0.4 seconds to detect contact welding.
Applications requiring a delay between the run command and the starter pulling-in can be
accommodated using this feature (for example, fans requiring damper closer before
running). The AuxSns1
time.
PATH: Configuration
Configuration
Other Settings
Aux Rly Faults
Passcode,login
× average current × voltage
trip point is programmable as a percentage of this value.
Time Delays
Time Delays
AuxSns1 .4
Time Delays
AuxSns2 .4
Time Delays
Run1-Run2 0
Time Delays
Run2-Run1 0
(auxiliary sense failure): Should the LM10 detect that a
and AuxSns2 time delays can be set to match the damper closure
Other Settings
Other Settings
U/O Volt En off
LM10 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 4: FUNCTIONALITY
× power factor
Range: 0.1 to 25.0 s in steps of 0.1 or
Disabled
Range: 0.1 to 25.0 s in steps of 0.1 or
Disabled
Range: 0 to 600 s in steps of 1
(0 to 180 s in steps of 1 for
revisions 1.40 and lower)
Range: 0 to 600 s in steps of 1
(0 to 180 s in steps of 1 for
revisions 1.40 and lower)
Range: On, off. Not available for
revisions 1.40 and lower
(EQ 4.3)