GE Industrial Solutions ASTAT BP User Manual
Page 58
ASTAT BP User Manual
58
GE Industrial Solutions
©2013 GE Company All Rights Reserved
Slow Speed Time Trips the ASTAT-BP when operating at slow speed for extended periods.
Check that operation time at Slow Speed is shorter than
Max Slow Sp Time.
Note: Motor and ASTAT-BP may be overheated when operating at slow speed
for an extended period.
For
Max Slow SP Time protection setting refer to section 4.7.6 page 36.
Wrong
Connection
Trips the ASTAT-BP when one or more motor phases is not properly connected to
ASTAT-BP’s load terminals or if there is an internal disconnection in the motor
winding.
Verify that the motor is connected properly.
See note 1 at the end of this section.
Shorted SCR
Trips the ASTAT-BP and prevents starting if any SCR is short-circuited or
when motor windings are shorted.
Check with an ohmmeter between L1-U, L2-V, L3-W; resistance > 20 K
independent bypass).
SCRs may fail due to:
* High short current not protected by proper fuses
* High voltage spikes not protected by proper external varistors.
* Frequent starting at maximum conditions or fault conditions.
See note 1 at the end of this section.
Over
Temperature
Heat-sink over-temperature. Trips the ASTAT-BP when the heat-sink
temperature rises above 85°C.
Improve cooling or use a bypass contactor. Check that motor starting is not too
frequent.
External Fault Trips the ASTAT-BP when a N.O. contact between terminals A2-C1 closes for
over two seconds. Only applicable if Auxiliary input C1 is set to
External
Fault. Refer to parameter PROG. Input C1 section 4.7.8 page 39
Check contact position and cause of closure.
Wrong
Parameters
Parameters not transferred from RAM to EEPROM or vice versa.
After loading new software version or after power up, press Reset, then Mode
and
▼ simultaneously and save the default parameters by pressing Set and
Mode simultaneously.
(If the Fault LED is ON, press Reset after
Wrong Parameters).
Refer to section 4.4 page 20 for reviewing and modifying parameters.
MODBUS TIME OUT Trips the ASTAT-BP if no valid Modbus communication during Modbus Time Out.
Trip occurs only if the following conditions exist:
• S. Link Control is set to Enabled
• Station Number is not set to OFF
Refer to section 4.7.10 page 41 for reviewing and modifying parameters.
Profi Fault
Command
Trips the ASTAT-BP if, when controlled via Profibus communication link, the
communication cable is torn or the communication from the PLC is lost.