Danfoss VLT FC 103 Programming Manual page 96

Parameter Description
14-22 Operation Mode
Option: Function:
12 13
39 42
Illustration 3.33 Wiring Control Card Test
[2] Initiali- Select [2] Initialisation to reset all parameter
sation values to default settings, except for
15-03 Power Up's, 15-04 Over Temp's and
15-05 Over Volt's. The frequency converter will
reset during the next power-up.
14-22 Operation Mode will also revert to the
default setting [0] Normal operation.
[3] Boot
mode
14-23 Typecode Setting
Option: Function:
Typecode re-writing. Use this parameter to set the
typecode matching the specific frequency converter.
14-25 Trip Delay at Torque Limit
Range: Function:
60 s [0 - 60 Enter the torque limit trip delay in seconds.
*
s] When the output torque reaches the torque
limits (4-16 Torque Limit Motor Mode and
4-17 Torque Limit Generator Mode), a warning is
triggered. When the torque limit warning has
been continuously present for the period
specified in this parameter, the frequency
converter trips. Disable the trip delay by setting
the parameter to 60 s = OFF. Thermal frequency
converter monitoring will still remain active.
14-26 Trip Delay at Inverter Fault
Range: Function:
Size related [0 - 35 s] When the frequency converter detects
*
an over-voltage in the set time trip will
be effected after the set time.
14-28 Production Settings
Option:
[0] No action
*
[1] Service reset
®
VLT Refrigeration Drive Programming Guide
18 19 27 29 32 33 20 37
50 53 54 55
Function:
®
MG16H102 - VLT is a registered Danfoss trademark
14-29 Service Code
Range:
0 [-2147483647 - 2147483647 ]
*
3.11.4 14-3* Current Limit Control
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
4-16 Torque Limit Motor Mode and 4-17 Torque Limit
Generator Mode.
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 [2] Coast
inverse or [3]Coast and reset inv.. 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 [2] Coast inverse or [3] Coast
and reset inv., the motor does not use the ramp down
time, since the frequency converter is coasted.
14-30 Current Lim Ctrl, 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 Ctrl, Integration Time
Range: Function:
Size related [0.002 - 2 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
instability.
14-32 Current Lim Ctrl, Filter Time
Range: Function:
Size related [1 - 100 ms] Sets a time constant for the current
*
limit controller low-pass filter.
3.11.5 14-4* Energy Optimising
Parameters for adjusting the energy optimisation level in
both Variable Torque (VT) and Automatic Energy Optimi-
zation (AEO) mode.
Automatic Energy Optimization is only active if 1-03 Torque
Characteristics, is set for either [2] Auto Energy Optim.
Compressor or [3] Auto Energy Optim. VT.
Function:
Service use only.
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