Emerson unidrive m200 User Manual page 192

Safety Product Mechanical
information information installation
Trip
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
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
• Reduce the duty cycle
• Reduce the motor load
• Disable the phase loss detection, set Pr 06.047 to 2.
PSU Internal power supply fault
The PSU trip indicates that one or more internal power supply rails are outside limits or overloaded.
Source
Control
system
Power
5
system
Recommended actions:
• Remove the option module and perform a reset
• There is a hardware fault within the drive – return the drive to the supplier
r.ALL RAM allocation error
The r.ALL trip indicates that an option module derivative image has requested more parameter RAM than is allowed. The
RAM allocation is checked in order of resulting sub-trip numbers, and so the failure with the highest sub-trip number is
given. The sub-trip is calculated as (parameter size) + (parameter type) + sub-array number.
Parameter size
227
Derivative image
Option slot 1 set-up
r.b.ht Hot rectifier/brake
250 Over-temperature detected on input rectifier or braking IGBT.
192
Electrical Getting Basic Running the
installation started parameters
xx y
00 0
xx y
00 0
01 1
Value
1 bit 1
8 bit 2
16 bit 3
32 bit 4
64 bit 5
Sub-array
NV Media
Optimization
motor Card
Diagnosis
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.
zz
00 Internal power supply overload.
Parameter type
Volatile
User save
Power-down save
Menus
29
15
Advanced
Technical data Diagnostics
parameters
zz
Description
Value
0
1
2
Value
2
4
Unidrive M200 / M201 User Guide
Issue Number: 4
UL Listing