Danfoss MCD3000 Series Manual page 25

ATTENTION
To reduce the chance of equipment damage
through inappropriate adjustment of Relay C
functionality the MCD3000 automatically sets this
parameter to 2 (Off) in the following instances.
•
If a soft stop time is programmed while Par. 38.
Relay C - Function Assignment is set to 1
(D.C.Brake Contactor Control).
•
When Par. 18 D.C.Brake - Brake Time is changed
to 0 seconds.
•
When Par. 18 D.C.Brake - Brake Time is changed
from 0 seconds.
The Automatic Reset function enables selected
trip types to be automatically reset. Automatic
Reset operation is affected by three settings.
•
Trip Types
•
Number Of Resets
•
Reset Delay
If the start command is still present after a
trip state is reset the motor will be
restarted. Ensure that personal safety is
not at risk from such operation and that all appropriate
safety measures have been taken.
39 Automatic Reset - Trip Types
Value:
0 - 3
0 = Off.
1 = Automatically reset Group 1 trips.
2 = Automatically reset Group 1 & 2 trips.
3 = Automatically reset Group 1,2 & 3 trips.
Function:
Selects what fault types will be automatically reset.
Description of choice:
Three groups of trips can be automatically reset.
Group Trip Type
1 Phase Imbalance, Phase Loss
2 Undercurrent, Instantaneous Overload
3 Overcurrent, Motor Thermistor
= factory setting
MG.15.A2.22 – VLT is a registered Danfoss trademar
MCD3000 Series
40 Automatic Reset - Number Of Resets
Value:
1 - 5 Resets
Function:
Sets the number of times faults will be reset before the
trip condition is latched and a manual reset is required.
Description of choice:
Set according to the maximum number of resets
required.
The MCD3000 reset counter will increment by one
when a trip occurs up to the programmed number of
resets. A manual reset will then be required.
The reset counter decrements by one (to a minimum
of zero) after each successful start/stop cycle.
41 Automatic Reset - Reset Delay Group 1 & 2
Value:
5 - 999 second
Function:
Sets the delay before automatic reset of Group 1 and
Group 2 trips.
Description of choice:
Set as required.
0 (Off)
42 Automatic Reset - Reset Delay Group 3
Value:
5 - 60 minutes
Function:
Sets the delay before automatic reset of Group 3 trips.
Description of choice:
Set as required.
43 Factory Diagnostic Display A
Value:
No adjustment
1 Reset
5 seconds
5 minutes
25