Alarm
code
Alarm
subcode
Name Description Check point and remedy reference
16 Hex
(dbH)
0000 Hex
Braking resis-
tor overheat-
ing
(1) High braking load Re-calculate the relationship between brak-
ing load calculations and braking capacity.
→
Reduce braking load.
→ Review braking resistor selection, and
increase braking capacity.
(Resetting of objects 3004Hex-33Hex,
3004Hex-34Hex, 3004Hex-35Hex data
is necessary)
(2) Short decelera-
tion time
Recalculate deceleration torque and deceler-
ation time required from the moment of iner-
tia of the load and deceleration time.
→
Lengthen deceleration time (parameters
3004Hex-09Hex, 3005Hex-0CHex,
3005Hex-0EHex, 3005Hex-10Hex,
3008Hex-39Hex)
→ Review braking resistor selection, and
increase braking capacity
.
(Resetting of objects 3004Hex-33Hex,
3004Hex-34Hex, 3004Hex-35Hex data
is necessary)
39 Hex
(ECF)
0000 Hex
EN circuit fail-
ure
(1) Enable circuit
(safe stop circuit)
logic failure
• Check that the output from the safety
switch is input using the same logic (High
or Low/Low) to both terminals [SF1]/[SF2].
→
Cycle the power to clear the alarm.
(2) Enable circuit
(safe stop circuit)
damage (single fail-
ure) detected
If this is not resolved by the procedure
above, the inverter is faulty
.
→
Replace the inverter.
9 Troubleshooting
9-4
M1 Series EtherCAT Type User’s Manual (I670)
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