5-100 F650 DIGITAL BAY CONTROLLER GEK-106310-AF
5.4 PROTECTION ELEMENTS CHAPTER 5: SETPOINTS
Locked rotor element settings are:
Function Permission (Function): This setting indicates whether the locked rotor element is enabled or disabled.
Input (Phasor(DFT)-RMS): Selection between fundamental phasor magnitude (DFT) or total waveform RMS
magnitude.
Full Load Current (FLC): This is the average maximum expected operating phase current for the motor.
Pickup Level: This is the current threshold over the full load current setting with which the
element operates. The operating current for this element is calculated as follows:
Trip time (Trip Delay): Setting of the Protection element operation time.
Reset time (Reset Delay): Reset time of the Protection element.
Snapshot Events: The snapshot event setting enables or disables the snapshot event generation for
this element.
The signals related to the locked rotor pickups and operations for the three locked rotor elements can be viewed at Actual
> Status > Control Elements > Locked Rotor and they are as follows:
Table 5-68: Locked rotor status
The block signals for the locked rotor element can be configured at: Setpoint > Relay Configuration > Protection
Elements
Table 5-69: Locked rotor blocks
Note:
The element works with primary values.
The element picks up if at least one of the three phase currents is above the adjusted level. The operation value is the
higher of the three.
The reset level is 97% to 98% of the pickup level.
LOCKED ROTOR STATUS
LOCKED ROTOR1 PKP
LOCKED ROTOR1 OP
LOCKED ROTOR2 PKP
LOCKED ROTOR2 OP
LOCKED ROTOR3 PKP
LOCKED ROTOR3 OP
LOCKED ROTOR BLOCKS
LOCKED ROTOR1 BLK
LOCKED ROTOR2 BLK
LOCKED ROTOR3 BLK
×=
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