ABB ACS 600 - Earthing, Mains and Motor Cable Connections; Control Cable Connections; Replacing the front cover

ACS 600 Master/Follower Application Macro C-1
Appendix C – Examples
I/O
ACTUAL SPEED
–
+
I/O
LO RE RE
RE
AC PA FU DRI
EN
0 L 1242.0 rpm I FREQ 45.00 Hz
CURRENT 80.00 A
TO MASTER
ACS 600 Master
ACS 600 Follower
Example 1: Master and Follower are coupled fixedly by a mechanical construction (gearing, chain etc.) To equalise the load between the Master and the Follower, Master is speed controlled and Fol- lower follows the torque reference of the Master. Parameter settings of the Master:
- See the default settings of the M/F Application macro in
Appendix B – Parameter Settings.
Parameter settings of the Follower:
- See the Follower Torque Control settings in
Appendix B – Parameter Settings
.
Operation: When driven at normal operating conditions, the speed controller output (TORQ REF 2) of the Follower is zero due to Window Control. The Follower follows the torque reference of the Master (TORQ REF 1). In a Follower load loss condition, Window Control activates the speed controller, thus preventing the Follower drive from rushing up to the maximum speed limit:
– Follower actual speed starts to rise rapidly. – Absolute value of the speed error (SPEED REF 3 - ACTUAL SPEED) exceeds the value set
with Parameter 60.05 WINDOW WIDTH NEG. As a consequence, the Window Control block connects the error to the speed controller.
– The speed controller starts adding a negative term to the torque reference (TORQ REF 1).
The motor torque is limited and speed rise prevented.
The Run enable signal to the master is wired through Relay Output RO3 of the Follower. By default, RO3 switches off the Run enable signal upon a Follower fault or power loss.
+24 V DC
NO FAULT (RO3)
RUN ENABLE (DI6)
TO FOLLOWER
Example 1: Master and Follower Drives Coupled Fixedly to Each Other
0
2
0
3
4
5
PID
=
~
Inverter
2.02
SPEED REF 3
SPEED
CONTROLLER
TORQUE REFER-
ENCE SELECTOR
TORQUE REFER-
ENCE CONTROL
2.13
TORQ REF USED
INVERTER
CONTROL
2.09
TORQ REF 2
2.10
TORQ REF 3
SPEED TORQUE MIN MAX ADD
–
+
0
2
0
3
4
5
PID
=
~
Inverter
SPEED
CONTROLLER
TORQUE REFER-
ENCE SELECTOR
TORQUE REFER-
ENCE CONTROL
INVERTER
CONTROL
2.09
TORQ REF 2
2.10
TORQ REF 3
SPEED TORQUE MIN MAX ADD
2.02
SPEED REF 3
ACTUAL SPEED
WINDOW
CONTROL
2.13
TORQ REF USED
START/STOP DIRECTION RUN ENABLE FAULT RESET
EXTERNAL CONTROL SIGNALS EXTERNAL SUPERVISION SIGNALS
1