Operation Principle; Acs880-07Lc Drives - ABB Q951 User Manual

28 Description of option +Q952+Q984
When the drive receives the emergency stop command:
1. The drive decelerates the motor to zero speed according to a user-defined ramp time.
Zero speed is a user-defined parameter setting.
2. ACS880-07LC/17LC/37LC drives: The drive activates the Safe torque off (STO) function.
3. The drive opens the main contactor/breaker, which disconnects the input power from
the drive.
4. The motor(s) coast(s) to a stop.

Operation principle

ACS880-07LC drives

￭
+2 4 V DC
-A64 1 -A64 1
3.1 3.1
1) 1)
3.2 3.2
BUS BUS
...
2)
-A642 -A642 -A64x -A64x
BUS BUS
...
3) 3)
R2 R2
R1 R1
- - - User-defined connection
A41 Inverter control unit
A51 Supply control unit
A61 Emergency stop safety relay
-S61
-A61
-S62 -S62
BUS BUS
-Qx -Qx
-K62.1 -K62.1
3) 3)
R2 R2
R1 R1
-K62.1 -K62.1
230 VA C
-K62 .1 -K62 .1
-Qx -Qx
-A41
-A412.X
DIO 1 DIO 1
1 1 1
X65 X65 X65
2 2 2
DIO 2 DIO 2
-K61 -K61
XSTO
-K61 -K61
OUT OUT
SGND SGND
-K62 .3 -K62 .3
IN1 IN1
IN2 IN2
-X96 9 -X96 9
-K62.2 -K62.2 -K62.3 -K62.3
-A51 -A51
DIIL DIIL
-K62 .2 -K62 .2 -K62 .2
24 VDC 24 VDC
-K62.2 -K62.2
-S62 -S62
-T11.x
XSTO
-X51 B
-X52 B
.OUT
SGND SGND SGND SGND SGND SGND
OUT2 OUT2 IN2 IN2 OUT2 OUT2
SNGD SNGD SGND SGND SGND SGND
OUT1 OUT1 IN1 IN1 OUT1 OUT1
5)
-Qx -Qx
-T01 -T01
~ ~
-T11 -T11 -T11
~ ~ ~ ~
M M M M
3~ 3~ 3~ 3~
4)