B&C Technologies SA Series Industrial - Manual (Page 76)

TROUBLE SHOOTING
7-16
Possible Causes What to Check and Suggested Measures
2. A high intensity noise was
given to the inverter while
data (especially initializing
data) was being written.
Check if appropriate noise control measures have been
implemented (e.g., correct grounding and routing of control and
main circuit wires). Alternatively, perform the same check as
described in (1) above.
→ Improve noise control. Alternatively, return the initialized
function code data to their previous settings, then restart the
operation.
3. The CPU did not operate
normally.
Initialize the function code data by setting H03 to 1, then reset the
alarm by pressing the PRG / RESET key and check that the alarm
goes on.
→ This problem was caused by a printed circuit board (PCB)
(including the CPU) malfunction, so it is necessary to replace
the PCB.
13. “Er2” Remote keypad communications error
Problem A communications error occurred between the remote keypad and the inverter.
Possible Causes What to Check and Suggested Measures
1. Break in the
communications cable or
poor contact.
Check continuity of the cable, contacts and connections.
→ Replace the cable.
2. A high intensity noise was
given to the inverter.
Check if appropriate noise control measures have been
implemented (e.g. correct grounding and routing of control and
main circuit wires).
→ Improve noise control.
3. The remote keypad
malfunctioned.
Check that alarm Er2 does not occur if you connect another remote
keypad to the inverter.
→ Replace the remote keypad.
4. The RS485
communications card
malfunctioned.
Check that alarm Er2 does not occur even if you connect another
remote keypad to the inverter.
→ Replace the card.
14. “Er3” CPU error.
Problem A CPU error (e.g. erratic CPU operation) occurred.
Possible Causes What to Check and Suggested Measures
1. A high intensity noise was
given to the inverter.
Check if appropriate noise control measures have been
implemented (e.g. correct grounding and routing of control and
main circuit wires).
→ Improve noise control.
2. The printed control circuit
board in the inverter
malfunctioned. → Replace the board.