Nidec Digistart D3 User Manual

92 Digistart D3: User Guide
Issue: G
Display
Possible cause/Suggested solution
Excess start time
Excess start time trip can occur in the following conditions:
• Pr 1A Motor Full Load Current is not appropriate for the motor
• Pr 2B Current Limit has been set too low
• Pr 2D Start Ramp Time has been set greater than the setting for 5A Excess Start Time
setting
• Pr 2D Start Ramp Time is set too short for a high inertia load when using Adaptive Control
Related Pr: 1A, 2B, 2D, 5A, 5B, 11A, 12B, 12D, 16B
Firing Fail Px
Where 'X' is phase 1, 2 or 3.
The SCR did not fire as expected. The SCR may be faulty or there may be an internal wiring
fault.
This trip is not adjustable.
Related Pr: None
FLC too high
This trip is not adjustable.
The Digistart D3 can support higher motor full load current values when connected to the motor
using inside delta configuration rather than in-line connection. If the soft starter is connected
in-line but the programmed setting for Pr 1A Motor Full Load Current is above the in-line
maximum, the soft starter will trip at start (see Minimum and Maximum Current Settings on
page 13).
If the soft starter is connected to the motor using inside delta configuration, the soft starter may
not be correctly detecting the connection. Contact your local supplier for advice.
Related Pr: 1A, 11A
Frequency
The mains frequency has gone beyond the specified range.
Check for other equipment in the area that could be affecting the mains supply, particularly
variable speed drives and switch mode power supplies (SMPS).
If the Digistart D3 is connected to a generator set supply, the generator may be too small or
could have a speed regulation problem.
This trip is not adjustable.
Related Pr: 5I, 5J, 6F, 16H
Ground fault
This fault only occurs if the RTD/Ground Fault card is fitted. Test the insulation of the output
cables and the motor. Identify and resolve the cause of any ground fault.
Related Pr: 5K, 6H, 16P
Heatsink overtemperature
Check if cooling fans are operating. If mounted in an enclosure, check if ventilation is
adequate.
Fans operate during Start, Run and for 10 minutes after the starter exits the Stop state.
NOTE
Models D3-0023-B to D3-0053-B and D3-0170-B do not have a cooling fan.
Models with fans will operate the cooling fans from a Start until 10 minutes after a
Stop.
Related Pr: 16N
High Level
This is a name selected for a programmable input. See Input A trip.
High Pressure
This is a name selected for a programmable input. See Input A trip.
Input trip
One of the soft starter's inputs is set to a trip function and has activated. Check the status of
the inputs to identify which input has activated, then resolve the trigger condition.
Related Pr: 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, 3J, 16I, 16J
Instantaneous overcurrent
• Current to the motor has exceeded the soft starter's built-in trip points:
- 7.2 times the Pr 1A Motor Full Load Current
- 6 times the starter's nominal current rating
Causes can include a locked rotor condition or an electrical fault in the motor or cabling.
This trip is not adjustable.
Related Pr: None
Internal fault X
This trip is not adjustable.
The Digistart D3 has tripped on an internal fault. Contact your local supplier with the fault code
(X).
Related Pr: None

Nidec Digistart D3 Specifications

General

Brand	Nidec
Model	Digistart D3
Category	Controller
Language	English