B&C Technologies SA Series Industrial - Manual (Page 68)

TROUBLE SHOOTING
7-8
Possible Causes What to Check and Suggested Measures
3. The WE - KP command
(“Enable editing of
function codes data from
keypad”) is not input
though it has been
assigned to a digital input
terminal. Check the data of function code E01, E02, E03, E98 and E99 and
the input signals with Menu #4 “I/O checking” using the keypad.
→ Cancel data protection of the function codes or turn on the
“Enable editing of function codes data from keypad”
command.
4. DC link circuit voltage
was below the under
voltage detection level.
Check the DC link circuit voltage with Menu #5 “Maintenance
information” and measure the input voltage using the keypad.
→ Supply power to match the inverter’s input rating and change
the data of the function codes.
2. The desired menu is not displayed.
Possible Causes What to Check and Suggested Measures
1. The limiting menus
function was not selected
appropriately.
Check the data of function code E52.
→ Change the data of function code E52 to display the desired
menu.
3. Nothing appears on the LED monitor.
Possible Causes What to Check and Suggested Measures
1. No power supplied to the
inverter.
Check the input voltage, output voltage and inter phase voltage
unbalance.
→ Connect a molded case circuit breaker, an earth leakage circuit
breaker (with the exception of those exclusively designed for
protection from ground faults) or a magnetic contactor.
→ Check for voltage drop, phase loss, poor connections, or poor
contacts, and fix them if necessary.
2. The power for the control
circuit did not reach a high
enough level.
Check if the jumper bar has been removed between terminals P1
and P (+) or if there is poor contact between the jumper bar and the
terminals.
→ Connect the jumper bar to terminals P1 and P (+) or tighten
the screws. Or connect a DC reactor.
→ Replace the inverter if it is malfunctioning.