ABB ACS 400 User Manual page 131

Code Description
8112 LOW FREQ 1
Sets a frequency limit (see Figure 50). When the ACS 400's output frequency falls below the value (8112
1 - 1 Hz) and one auxiliary motor is running, the Stop Delay counter is started. When the time set
LOW FREQ
with parameter 8116
1 + 1 Hz), the first auxiliary motor is stopped.
LOW FREQ
After the auxiliary motor is stopped, the ACS 400's output frequency is increased by the value (8109
1 - 8112
FREQ LOW FREQ
Note! Low Frequency 1 should be within limits 2007
8113 LOW FREQ 2
Sets a frequency limit (see Figure 50). When the ACS 400's output frequency falls below the value (8113
2 - 1 Hz) and two auxiliary motors are running, the Stop Delay counter is started. When the time
LOW FREQ
set with parameter 8116
LOW FREQ 2 + 1 Hz), the second auxiliary motor is stopped.
After the auxiliary motor is stopped, the ACS 400's output frequency is increased by a value (8110
2 - 8113
FREQ LOW FREQ
Note! Low Frequency 2 should be within limits 2007
8114 LOW FREQ 3
Sets a frequency limit (see Figure 50). When the ACS 400's output frequency falls below a value (8114
3 - 1 Hz) and three auxiliary motors are running a Stop Delay counter is started. When the time set
FREQ
with parameter 8116
3 + 1 Hz), the third auxiliary motor is stopped.
LOW FREQ
After the auxiliary motor is stopped, ACS 400 output frequency is increased by value (8111
8114 3).
LOW FREQ
Note! Low Frequency 3 should be within limits 2007
8115 AUX MOT START D
Sets the Start Delay for the auxiliary motors. See parameter 8112
information.
8116 AUX MOT STOP D.
Sets the Stop Delay for the auxiliary motors. See parameter 8112
8109
START FREQ
8112
LOW FREQ
Aux Motor 1
Stop/Start
Figure 50 Start Frequency, Low Frequency, Start Delay and Stop Delay.
120
. is elapsed and if the output frequency is still below the value (8112
AUX MOT STOP D
1).
. is elapsed and if the output frequency is still below value (8113
AUX MOT STOP D
2).
. is elapsed and if the output frequency is still below the value (8114
AUX MOT STOP D
Frequency
1 + 1 Hz
1 - 1 Hz
f
min
http://nicontrols.com
+1 and 8109
MINIMUM FREQ
+1 and 8109
MINIMUM FREQ
+1 and 8109
MINIMUM FREQ
LOW FREQ
LOW FREQ
8115
Frequency de-
crease during
the Stop Delay
8116 .
AUX MOT STOP D
Start
Stop
1.
START FREQ
START
2
START FREQ
START FREQ
3.
START FREQ
1 and Figure 50 for more
1 for more information.
AUX MOT START D
f
max
Frequency in-
crease during
the Start Delay
Time
Increasing
flow
Decreasing
flow
ACS 400 User's Manual
START
LOW
3 -