Omron SX-F, Инструкция по эксплуатации

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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