Omron M1 Series User Manual page 745

Alarm
Alarm
sub-
code
code
(ECF)
(Er1)
M1 Series Standard Type User's Manual (I669)
Name Description
(1) Bad connection in
control terminal block
board
(2) Enable circuit logic
failure
EN circuit fail-
ure
(3) Enable circuit (safe
stop circuit) damage
(single failure) detected
(1) Power disconnected
during parameter data
writing (in particular
during initialization and
data copying) and con-
trol power dropped
(2) During parameter
data writing (in particu-
lar during initialization),
strong noise received
from surrounds
(3) Error occurred in
control circuit
Memory error
(4) Power disconnected
during saving of user
settings with parameter
H193, and control pow-
er dropped
(5) During saving of
user settings with pa-
rameter H193, strong
noise received from
surrounds
9 Troubleshooting
Check point and remedy reference
Check that the control terminal block board
is firmly mounted in the inverter unit.
→ Cycle the power to clear the alarm.
•
Check that the output from the safety
switch is input using the same logic (High/
High or Low/Low) to both terminals [SF1]/
[SF2].
•
Check that both of the two poles of SW9
on the control board are turned ON/ON or
OFF/OFF.
→ The alarm is canceled through use of
the key or by cycling the power.
If this is not resolved by the procedure
above, the inverter is faulty.
→ Please contact OMRON.
Initialize data with Data Initialization (H03),
and when complete, use the
check that the alarm can been canceled.
→ Restore the initialized parameter data,
and restart operation.
Check methods for measures against noise
(grounding conditions, control/main circuit
wiring and installation).
Additionally, perform the same checks as in
(1).
→ Perform measures against noise, re-
store the initialized parameter data, and
restart operation.
Initialize data with Data Initialization (H03),
and when initialization is complete, use the
key to check if the alarm continues even
when trying to cancel this.
→ Board (including CPU) error, so contact
OMRON.
Save user settings with parameter (H193),
and when saving is complete, use the
key to check if the alarm continues even
when trying to cancel this.
→ Board (including CPU) error, so contact
OMRON.
Check methods for measures against noise
(grounding conditions, control/main circuit
wiring and installation).
Additionally, perform the same checks as in
(4).
→ Board (including CPU) error, so contact
OMRON.
key to
9
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