Nidec Unidrive M200 User Manual page 142

Safety Product Mechanical
information information installation
Trip
PAd Keypad has been removed when the drive is receiving the reference from the keypad
The PAd trip indicates that the drive is in keypad mode [Reference Selector (01.014) = 4 or 6] and the keypad has been
removed or disconnected from the drive.
34 Recommended actions:
• Re-install keypad and reset
• Change Reference Selector (01.014) to select the reference from another source
Pb.bt Power board is in bootloader mode
Power board is in bootloader mode
245 Recommended actions:
• Send power board firmware file to reprogram the power board using Unidrive M Connect and power cycle drive.
Pb.Er Communication has been lost / errors detected between control and power processor
The Pb.Er trip is initiated if there is no communications between the control board processor and the power board
processor. The reason for the trip can be identified by the sub-trip number.
Sub-trip
93
Recommended actions:
• Hardware fault – Contact the supplier of the drive
Pb.HF Power board HF
Power processor hardware fault. The sub-trip number is the HF code.
Recommended action:
235
• Hardware fault - Contact the supplier of the drive
Pd.S Power down save error
The Pd.S trip indicates that an error has been detected in the power down save parameters saved in non-volatile memory.
37 Recommended actions:
• Perform a 1001 save in Pr 00 to ensure that the trip doesn't occur the next time the drive is powered up.
PH.Lo Supply phase loss
The PH.Lo trip indicates that the drive has detected an input phase loss or large supply imbalance. The drive will attempt to
stop the motor before this trip is initiated. If the motor cannot be stopped in 10 seconds the trip occurs immediately. The
PH.Lo trip works by monitoring the ripple voltage on the DC bus of the drive, if the DC bus ripple exceeds the threshold, the
drive will trip on PH.Lo. Potential causes of the DC bus ripple are input phase loss, Large supply impedance and severe
output current instability.
Source
Control
system
Power
system
32
Input phase loss detection can be disabled when the drive is required to operate from the DC supply or from a single phase
supply in Input Phase Loss Detection Mode (06.047).
Recommended actions:
• Check the AC supply voltage balance and level at full load
• Check the DC bus ripple level with an isolated oscilloscope
• Check the output current stability
• Check for mechanical resonance with the load
• Reduce the duty cycle
• Reduce the motor load
• Disable the phase loss detection, set Pr 06.047 to 2.
142
Electrical Getting Basic
installation started parameters
1 PLL operating region out of lock
2 Power board lost communication with user board
3 User board lost communication with power board
4 Communication CRC error
xx y
00 0
01 0
Running the NV Media
Optimization
motor
Diagnosis
Reason
00: Phase loss detected based on control system feedback. The drive
attempts to stop the drive before tripping unless bit 2 of Action On Trip
Detection (10.037) is set to one.
00: Phase loss has been detected by the rectifier module.
Onboard Advanced
Diagnostics
Card PLC parameters
zz
Unidrive M200 / M201 Control User Guide
UL Listing
Issue Number: 2