263
Trip conditions, causes and remedial action
Section 12-2
Deviation
CRANE board detecting deviation in
motor operation.
Note
Only use in Crane Control.
-Check encoder signals.
-Check deviation jumper on Crane option board.
-Check the settings in menus [3AB] & [3AC]
Pump
No master pump can be selected due to
error in feedback signalling.
Note
Only used in Pump Control.
-Check cables and wiring for Pump feedback signals
-Check settings with regard to the pump feedback
digital inputs
Over temp
Heatsink temperature too high:
-Too high ambient temperature of the
VSD
-Insufficient cooling
-Too high current
-Blocked or stuffed fans
-Check the cooling of the VSD cabinet.
-Check the functionality of the built-in fans.
The fans
must switch on automatically if the heatsink tempera-
ture gets too high. At power up the fans are
briefly
switched on.
-Check VSD and motor rating
-Clean fans
Over curr F
Motor current exceeds the peak VSD cur-
rent:
-Too short acceleration time.
-Too high motor load
-Excessive load change
-Soft short-circuit between phases or
phase to earth
-Poor or loose motor cable connections
-Too high IxR Compensation level
-Check the acceleration time settings and make them
longer if necessary.
-Check the motor load.
-Check on bad motor cable connections
-Check on bad earth cable connection
-Check on water or moisture in the motor housing and
cable connections.
-Lower the level of IxR Compensation [352]
Over volt D(ecelera-
tion)
Too high DC Link voltage:
-Too short deceleration time with
respect
to
motor/machine inertia.
-Too small brake resistor malfunctioning
Brake chopper
-Check the deceleration time settings and make them
longer if necessary.
-Check the dimensions of the brake resistor and the
functionality
of the Brake chopper (if used)
Over volt G(enera-
tion)
Over volt (Mains)
Too high DC Link voltage, due to too high
mains voltage
-Check the main supply voltage
-Try to take away the interference cause or
use other
main supply lines.
O(ver) volt M(ains)
cut
Over speed
Motor speed measurement exceeds max-
imum level. 110% of max speed (all
parameters sets).
-Check encoder cables, wiring and setup
-Check motor data setup [22x]
-Perform short ID-run
Under voltage
Too low DC Link voltage:
-Too low or no supply voltage
-Mains voltage dip due to starting other
major power consuming machines on
the same line.
-Make sure all three phases are properly connected
and that the terminal screws are tightened.
-Check that the mains supply voltage is within the lim-
its of the VSD.
-Try to use other mains supply lines if dip is caused by
other machinery
-Use the function low voltage override [421]
LC Level
Low liquid cooling level in external reser-
voir. External input (DigIn 1-8) active:
- active low function on the input.
Note
Only valid for VSD types with
Liquid Cooling option.
-Check liquid cooling
-Check the equipment and wiring that initiates the
external input
-Check the programming of the digital inputs DigIn 1-8
OPTION
If and Option specific proble occurs
Check the description of the specific option
Table 33 Trip condition, their possible causes and remedial action
Trip condition
Possible Cause
Remedy
Summary of Contents for SX-F
Page 2: ......
Page 14: ...6 Table of contents...
Page 20: ...12 Glossary Section 1 6...
Page 32: ...24 Cabinet mounting Section 2 3...
Page 58: ...50 Connecting options Section 5 6...
Page 72: ...64 Load Monitor and Process Protection 400 Section 7 5...
Page 74: ...66 EMC standards Section 8 1...
Page 266: ...258 System Data 900 Section 11 9...
Page 274: ...266 Maintenance Section 12 3...
Page 284: ...276 Liquid cooling Section 13 12...
