Danfoss VLT Refrigeration Drive FC 103 Programming Manual page 114

Parameter Description
value 100%, the frequency converter trips and issue an
alarm.
Status for the counter can be read in
parameter 16-35 Inverter Thermal.
3 3
If parameter 14-61 Function at Inverter Overload is set to [3]
Derate, the pump speed is reduced when the counter
exceeds 98%, and stays reduced until the counter has
dropped below 90.7%.
If parameter 14-62 Inv. Overload Derate Current is set to for
example 95%, a steady overload causes the pump speed to
fluctuate between values corresponding to 110% and 95%
of rated output current for the frequency converter.
14-61 Function at Inverter Overload
Option:
[0] Trip
*
[1] Derate Reduces pump speed to decrease the load on the
14-62 Inv. Overload Derate Current
Range:
95 % [50 -
*
100 %]
14-80 Option Supplied by External 24VDC
Option: Function:
NOTICE
This parameter is only changing function by
performing a power cycle.
[0] No Select [0] No to use the frequency converter's 24 V DC
supply.
Failure
Inverter overloaded
Overcurrent
24 V supply low
Current limit
Locked rotor
Table 3.14 Selection of Action when Selected Alarm Appears
D means the default value. X means a possible selection.
112
Function:
Is used in case of steady overload beyond the
thermal limits (110% for 60 s).
Select [0] Trip to make the frequency converter trip
and issue an alarm.
power section and allowing this to cool down.
Function:
Enter the current level (in % of rated output
current for the frequency converter) when
running with reduced pump speed after load
on the frequency converter has exceeded the
allowable limit (110% for 60 s).
Alarm
9
13
47
59
99
Danfoss A/S © 05/2016 All rights reserved.
®
VLT Refrigeration Drive FC 103
14-80 Option Supplied by External 24VDC
Option:
[1] Yes Select [1] Yes if a 24 V DC external supply is used to
*
14-89 Option Detection
Selects the behavior of the frequency converter when a change
in the option configuration is detected.
Option:
[0] Protect Option
*
Config.
[1] Enable Option
Change
14-90 Fault Level
Use this parameter to customize fault levels.
Option:
[0] Off
[1] Warning
[2] Trip
[3] Trip lock
[4] Trip w. delayed
reset
Off Warning
X
–
X
X
–
Function:
power the option. Inputs/outputs are galvanically
isolated from the frequency converter when operated
from an external supply.
Function:
Freezes the current settings and
prevents unwanted changes when
missing or defective options are
detected.
Changes frequency converter settings
and is used when modifying the
system configuration. This parameter
setting returns to [0] Protect Option
Config. after an option change.
Function:
Use [0] Off with caution as it ignores all
warnings and alarms for the selected source.
Changing a fault level from default option
[3] Trip Lock to [2] Trip leads to the
automatic reset of the alarm. For alarms
involving overcurrent, the frequency
converter has a hardware protection that
issues a 3 minute recovery after 2
consecutive overcurrent incidents. This
hardware protection cannot be overruled.
Trip Trip w.
delayed reset
D –
– –
– –
D –
– X
Trip Lock
– –
X D
– D
– –
– D
MG16H202