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Menu 10
Unidrive SP Advanced User Guide 169
Issue Number: 7 www.controltechniques.com
OV DC bus voltage has exceeded the peak level or the maximum continuous level for 30 seconds
2
Increase deceleration ramp (Pr 0.04)
Decrease braking resistor value (staying above the minimum value)
Check nominal AC supply level
Check for supply disturbances which could cause the DC bus to rise – voltage overshoot after supply recovery from a notch induced
by DC drives.
Check motor insulation
Drive voltage rating Peak voltage Maximum continuous voltage level
200 415 405
400 830 810
575 990 960
690 1190 1160
If the drive is operating in low voltage battery mode the overvoltage trip level is 1.45 x Pr 6.46.
OV.P Power module over voltage
106
Increase deceleration ramp (Pr 0.04)
Decrease braking resistor value (staying above the minimum value)
Check nominal AC supply level
Check for supply disturbances which could cause the DC bus to rise – voltage overshoot after supply recovery from a notch induced
by DC drives.
Check motor insulation
Drive voltage rating Peak voltage Maximum continuous voltage level
200 415 405
400 830 810
575 990 960
690 1190 1160
If the drive is operating in low voltage battery mode the overvoltage trip level is 1.45 x Pr 6.46.
PAd Keypad has been removed when the drive is receiving the speed reference from the keypad
34
Fit keypad and reset
Change speed reference selector to select speed reference from another source
Ph AC voltage input phase loss or large supply imbalance detected
32
Ensure all three phases are present and balanced
Check input voltage levels are correct (at full load)
N
Load level must be between 50 and 100% for the drive to trip under phase loss conditions. The drive will attempt to stop the motor
before this trip is initiated.
Ph.P Power module phase loss detection
107
Ensure all three phases are present and balanced
Check input voltage levels are correct (at full load)
PS Internal power supply fault
5
Remove any Solutions Modules and reset
Check integrity of interface ribbon cables and connections (size 4,5,6 only)
Hardware fault - return drive to supplier
PS.10V 10V user power supply current greater than 10mA
8
Check wiring to terminal 4
Reduce load on terminal 4
PS.24V 24V internal power supply overload
9
The total user load of the drive and Solutions Modules has exceeded the internal 24V power supply limit.
The user load consists of the drive’s digital outputs plus the SM-I/O Plus digital outputs, or the drive’s main encoder supply plus the
SM-Universal Encoder Plus and SM-Encoder Plus encoder supply.
• Reduce load and reset
• Provide an external 24V >50W power supply
• Remove any Solutions Modules and reset
PS.P Power module power supply fail
108
Remove any Solutions Modules and reset
Check integrity of interface ribbon cables and connections (size 4,5,6 only)
Hardware fault - return drive to supplier
rS Failure to measure resistance during autotune or when starting in open loop vector mode 0 or 3
33 Check motor power connection continuity
Trip Diagnosis
NOTE
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