ABB RELION 620 Series Technical Manual page 772

Section 4
Protection functions
4.10.6
4.10.7
Table 723: STTPMSU Group settings (Basic)
Parameter
Motor start-up A
Motor start-up time
Lock rotor time
Str over delay time
Table 724: STTPMSU Group settings (Advanced)
Parameter
Start detection A
766
Signals
Table 721: STTPMSU Input signals
Name
I_A
I_B
I_C
BLOCK
BLK_LK_ST
CB_CLOSED
STALL_IND
ST_EMERG_ENA
Table 722: STTPMSU Output signals
Name
OPR_IIT
OPR_STALL
MOT_START
LOCK_START
Settings
Values (Range) Unit
1.0...10.0 xIn
1...80 s
2...120 s
0...60000 ms
Values (Range) Unit
0.1...10.0 xIn
Type Default Description
SIGNAL 0 Phase A current
SIGNAL 0 Phase B current
SIGNAL 0 Phase C current
BOOLEAN 0=False Block of function
BOOLEAN 0=False Blocks lock out condition for restart of motor
BOOLEAN 0=False Input showing the status of motor circuit breaker
BOOLEAN 0=False Input signal for showing the motor is not stalling
BOOLEAN 0=False Enable emergency start to disable lock of start of
motor
Type Description
BOOLEAN Operate/trip signal for thermal stress.
BOOLEAN Operate/trip signal for stalling protection.
BOOLEAN Signal to show that motor startup is in progress
BOOLEAN Lock out condition for restart of motor.
Step Default
0.1 2.0
1 5
1 10
1 100
Step Default
0.1 1.5
1MRS757644 F
Description
Motor starting current
Motor starting time
Permitted stalling time
Time delay to check for completion of
motor startup period
Description
Current value for detecting starting of
motor.
Technical Manual
620 series