ABB ACS320 series, Руководство пользователя

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266 Actual signals and parameters
8117
NR OF AUX MOT
0…4 (5 with TO) 1 = 1 1 
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 reg-
ulated 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 drive provides one relay output RO1. An external relay output module can be
added to provide relay outputs RO2…RO4.
Note: If five auxiliary motors are used (Autochange disabled), use transistor output TO
in addition to relay outputs RO1…RO4. Note that max. voltage at TO is 30 V DC.
Parameters
1401 … 1403 and 1410 define, respectively, how relays RO1…RO4 are
used – the parameter value 31 (PFA) defines the relay as used for PFA.
The drive 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 regu-
lated 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 set-
ting = 31 (PFA), and so on. The fourth auxiliary motor uses the same reference step,
low frequency and start frequency values as the third auxiliary motor. Number of auxil-
iary motors.
Group 81: PFA control
Code Description Range Resolution Default S
Standard PFC mode
ACS320
PFC with Autochange mode
Relay logic
ACS320