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14-26 Trip Delay at Inverter Fault
Range:
Function:
5s
*
[0 - 35 s]
When the frequency converter detects an over-voltage in the
set time trip will be effected after the set time.
14-29 Service Code
Range:
Function:
-
*
[-2147483647 to
+2147483647 N/A]
Service use only.
2.13.5. Current Limit Control, 14-3*
The frequency converter features an integral Current Limit Controller which is activated when the
motor current, and thus the torque, is higher than the torque limits set in par. 4-16 and 4-17.
When the current limit is reached during motor operation or regenerative operation, the frequency
converter will try to reduce torque below the preset torque limits as quickly as possible without
losing control of the motor.
While the current control is active, the frequency converter can only be stopped by setting a digital
input to
Coast inverse
[2] or
Coast and reset inv.
[3]. Any signal on terminals 18 to 33 will not be
active until the frequency converter is no longer near the current limit.
By using a digital input set to
Coast inverse
[2] or
Coast and reset inv.
[3], the motor does not
use the ramp-down time, since the frequency converter is coasted.
14-30 Current Lim Cont, Proportional Gain
Range:
Function:
100 %
*
[0 - 500 %]
Enter the proportional gain value for the current limit controller.
Selection of a high value makes the controller react faster. Too
high a setting leads to controller instability.
14-31 Current Lim Contr, Integration Time
Range:
Function:
0.020 s
*
[0.002 - 2.000 s]
Controls the current limit control integration time. Setting it to
a lower value makes it react faster. A setting too low leads to
control instabillity.
2.13.6. Energy Optimising, 14-4*
Parameters for adjusting the energy optimisation level in both Variable Torque (VT) and Automatic
Energy Optimization (AEO) mode.
Automatic Energy Optimisation is only active if par.1-03, Torque Characteristics, is set for either
Auto Energy Optim. CT
[2] or
Auto Energy Optim. VT
[3].
2. Parameter Description
VLT
®
AQUA Drive Programming Guide
148
MG.20.O2.02 - VLT
®
is a registered Danfoss trademark
2