B&C Technologies SA Series Industrial - Manual (Page 77)

TROUBLE SHOOTING
7-17
15. “Er6” Operation protection
Problem An error occurred due to incorrect operation of the motor.
Possible Causes What to Check and Suggested Measures
1. The STOP key was
pressed when H96 = 1 or
3.
→ Change the setting for H96 so that the STOP key priority
function is invalid to ensure that the inverter does not operate
unexpectedly.
2. The start check function
was activated when H96 =
2 or 3.
Check that Er6 occurs when:
-
The power is switched on
- An alarm is released (by pressing the PRG/RESET key or
turning reset alarm (RST) on).
- The link command (LE) has switched the inverter operations.
→ Reconsider the running sequence to avoid input of the run
command when Er6 has occurred.
→ Change the setting for H96 so that the STOP key priority
function is invalid to ensure the inverter does not operate
unexpectedly.
(To reset the alarm, turn the run command off.)
16. “Er8” RS485 communications error
Problem A communications error occurred during RS485 communications.
Possible Causes What to Check and Suggested Measures
1 Host controllers (e.g. PLCs
and personal computers)
did not operate due to
incorrect settings and / or
defective software /
hardware.
Check the controllers.
→ Remove the cause of the controller error.
2 Relay converters (e.g.,
RS232C / RS485
converter) did not operate
due to incorrect
connections and settings,
and defective hardware. Check the converter (e.g. check for poor contact).
→ Change the various converter settings, reconnect the wires, or
replace hardware (such as recommended devices) as
appropriate.
3 Broken communications
cable or poor contact.
Check continuity of the cable, contacts and connections.
→ Replace the cable.
4 Even though no response
error detection time (y08)
has been set,
communications did not
occur cyclically. Check the host controllers.
→ Change the settings of host controller software, or make the no
response error detection time invalid (y 08=0).
5 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.
→ Improve measures against noise from host controllers.
→ Replace the relay converter with a recommended insulate
converter