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ACS550 User’s Manual
139
Start-Up
• The table below shows the ACS550 PFC motor assignments for some typical settings in the Relay Output
parameters (1401…1403 and 1410…1412), where the settings are either =31 (
PFC
), or =X (anything but 31), and
where the Autochange function is disabled (8118
AUTOCHNG
INTERV
= 0).
• The table below shows the ACS550 PFC motor assignments for some typical settings in the Relay Output
parameters (1401…1403 and 1410…1412), where the settings are either =31 (
PFC
), or =X (anything but 31), and
where the Autochange function is enabled (8118
AUTOCHNG
INTERV
= value > 0).
8118
AUTOCHNG INTERV
Controls operation of the Autochange function and sets the
interval between changes.
• The Autochange time interval only applies to the time when
the speed regulated motor is running.
• See parameter 8119
AUTOCHNG
LEVEL
for an overview of the
Autochange function.
• The drive always coasts to a stop when autochange is
performed.
• Autochange enabled requires parameter 8120
INTERLOCKS
=
value > 0.
0.0 =
NOT
SEL
– Disables the Autochange function.
0.1…336 = The operating time interval (the time when the start
signal is on) between automatic motor changes.
Warning! When enabled, the Autochange function
requires the interlocks (8120 interlocks = value > 0)
enabled. During autochange the interlocks interrupt the
drive’s power output, preventing damage to the
contacts.
Code Description
Parameter Setting
ACS550 Relay Assignment
1
4
0
1
1
4
0
2
1
4
0
3
1
4
1
0
1
4
1
1
1
4
1
2
8
1
1
7
Autochange Disabled
RO1
RO2
RO3
RO4
RO5
RO6
31 X X X X X 1 Aux.
X
X
X
X
X
31 31 X X X X 2 Aux.
Aux.
X
X
X
X
31 31 31 X X X 3 Aux.
Aux.
Aux.
X
X
X
X 31 31 X X X 2 X
Aux.
Aux.
X
X
X
X X X 31 X 31 2 X
X
X
Aux.
X
Aux.
31 31 X
X X X 1* Aux.
Aux.
X
X
X
X
* = One additional relay output for the PFC that is in use. One motor is in “sleep”
when the other is rotating.
Parameter Setting
ACS550 Relay Assignment
1
4
0
1
1
4
0
2
1
4
0
3
1
4
1
0
1
4
1
1
1
4
1
2
8
1
1
7
Autochange Disabled
RO1
RO2
RO3
RO4
RO5
RO6
31 31 X X X X 1 PFC
PFC
X
X
X
X
31 31 31 X X X 2 PFC
PFC
PFC
X
X
X
x 31 31 X X X 1 X
PFC
PFC
X
X
X
X X X 31 X 31 1 X
X
X
PFC
X
PFC
31 31 X
X
X
X 0** PFC
PFC
X
X
X
X
** = No auxiliary motors, but the autochange function is in use. Working as a
standard PID-control.
PFC with Autochange mode
ACS550
Relay Logic