(4) Over voltage (E 07)
Phenomena:
Over voltage at DC bus line of the frequency inverter.
Cause:
Mains voltage too high, mains voltage fluctuation or rapid mains voltage return
(choke energy leads to voltage increase).
Remedy:
Make sure that mains voltage is within tolerance limits.
Cause:
In case SJ100 is used in combination with a regenerative braking unit(ISPM)/
resistor but the regenerative braking unit(ISPM)/resistor does not function.
Remedy:
Replace regenerative braking unit(ISPM)/resistor.
Cause:
In case SJU100 is used in combination with a raking resistor but the braking
resistor cannot absorb the regenerative energy.
Remedy:
Re-calculate and use suitable braking resistor.
Cause:
Deceleration time is too short.
Remedy:
Make deceleration time longer, use braking unit (resistor), use bigger capacity of
frequency inverter.
Way to Reset:
A
(5) Under voltage (E 09)
Phenomena:
Under voltage at DC bus line of the frequency inverter.
Cause:
The mains voltage is not available or not within the tolerance limits.
Remedy:
Check all 3 (or 2) mains power supply voltage that it is within its specification.
Cause:
Thyristor for smooth charging is defect and DC bus voltage drops while operation
due to current flows through smooth charging resistor.
Remedy:
Change ISPM.
Cause:
Period of instantaneous power failure is longer than the set value [b02], or DC bus
voltage go down to its detecting level while instantaneous power failure.
Remedy:
Get rid of the instantaneous power failure, evaluate the power supply system, set
bigger value for [b02].
Cause:
One of the AC voltage is missing (applied only for 3 phase INV)
Remedy:
Check AC line voltage , check the fuses.
Way to Reset:
A
(6) EEPROM error (E 08)
Phenomena:
Abnormal situation occurs at the memory portion of the frequency inverter due to
incoming noise etc..
Cause:
Influenced by Electrical Magnetic Interference.
Remedy:
Keep such noise source away from the frequency inverter.
Cause:
Ambient temperature is too high.
Remedy:
Take countermeasure against high ambient temperature.
3-3
Содержание SJ100 Series
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