ABB DriveIT ACH550-01 User Manual page 301

ACH550 User's Manual
Code Description
8117 NR OF AUX MOT
Sets the number of auxiliary motors.
• Each auxiliary motor requires a relay output, which the drive uses
to send start/stop signals.
• The Autochange function, if used, requires an additional relay
output for the speed regulated motor.
The following describes the set-up of the required relay outputs.
Relay Outputs
As noted above, each auxiliary motor requires a relay output, which
the drive uses to send start/stop signals. The following describes
how the drive keeps track of motors and relays.
• The ACH550 provides relay outputs RO1...RO3.
• An external digital output module can be added to provide relay
outputs RO4...RO6.
• Parameters 1401...1403 and 1410...1412 define, respectively,
how relays RO1...RO6 are used – the parameter value 31 PFA
defines the relay as used for PFA.
• The ACH550 assigns auxiliary motors to relays in ascending
order. If the Autochange function is disabled, the first auxiliary
motor is the one connected to the first relay with a parameter
setting = 31 PFA, and so on. If the Autochange function is used,
the assignments rotate. Initially, the speed regulated motor is the
one connected to the first relay with a parameter setting = 31
PFA, the first auxiliary motor is the one connected to the second
relay with a parameter setting = 31 PFA, and so on
.
Parameter listing and descriptions
ACH550
Standard PFA mode
Range
0...3
297