axismd.ai
Okuma OSP Controller
Servo/Axis · Intermediate
Okuma OSP Alarm A 1683 - MCS Rotary encoder 5 initialization failure
The control could not complete initialization of rotary encoder 5 (Others type) on the named axis. The encoder did not respond correctly at power-up, so position feedback for that axis cannot be trusted.
1683
Okuma OSP Alarm A 1683 - MCS Rotary encoder 5 initialization failure
MCS Rotary encoder 5 initialization failure
The control could not complete initialization of rotary encoder 5 (Others type) on the named axis. The encoder did not respond correctly at power-up, so position feedback for that axis cannot be trusted.
Common Causes
- Failed rotary encoder 5 (Others)
- Encoder cable or connector fault preventing communication at startup
- Supply or wiring problem to the encoder
Troubleshooting Steps
- 1Note which axis is named in the alarm object to identify the affected encoder.
- 2Power down and lock out; inspect the encoder 5 cable and connector on that axis for looseness, damage or contamination and reseat them.
- 3Power up and check whether the initialization failure returns immediately.
- 4If it returns, replace rotary encoder 5 (Others) per the manual's corrective action.
- 5If a new encoder does not clear the fault, record the alarm number and axis and contact Okuma service.
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