For CVM78E-012DRR0BI-1412, EncoderWorks can provide a custom compatible replacement focused on CANopen terminal wiring, 26-bit position mapping, and Ø10 mm Inox servo-shaft alignment. This model should not be treated like a cable-output version. The DR terminal compartment shifts the replacement risk toward field wiring, cable-gland sealing, CAN H/L routing, and termination control.
The CVM78E-012DRR0BI-1412 is a CANopen multiturn absolute encoder configuration with binary code, 12-bit singleturn resolution, 14-bit multiturn range, explosion-proof IP66 construction, Inox housing execution, Ø10 mm solid shaft, servo flange, DR radial terminal compartment, and 10–30 VDC supply.
The first failure boundary is terminal-compartment wiring. Power supply, CAN low, CAN high, CAN ground, housing ground, Bus IN, Bus OUT, and shield connection must be verified before startup. If CAN H/L is reversed, the 121 Ω termination is enabled at the wrong bus position, or the cable gland does not preserve shielding and strain relief, the device may power up but fail to exchange stable process data.
This replacement fails when the CANopen node is detected, but the PLC reads no valid or incorrect multiturn position because terminal wiring, node address, baud rate, termination, or DS406 profile settings do not match the original encoder. That is a network and wiring failure, not a sensing failure.
The second boundary is 12/14-bit parameter agreement. A 12-bit singleturn and 14-bit multiturn structure is not interchangeable with 12/12 or 16/12 mapping unless the PLC project is changed. Preset value, counting direction, operating mode, limit switches, cam functions, and overall resolution must be copied.
Mechanically, the Ø10 mm solid servo shaft requires accurate coupling alignment. Inox housing and IP66 flameproof construction do not correct radial load, axial preload, flange misalignment, or terminal-cap cable strain.
The replacement decision should first confirm explosion-proof requirement, Inox housing, Ø10 mm servo-flange geometry, DR radial terminal layout, cable-gland sealing, CANopen DS301 / DS406 compatibility, 12-bit singleturn and 14-bit multiturn mapping, node address, baud rate, 121 Ω termination, CAN H/L wiring, preset value, counting direction, shield grounding, and coupling load. EncoderWorks treats CVM78E-012DRR0BI-1412 as an industrial encoder custom compatible solution where CANopen terminal wiring and servo-shaft mechanics decide field reliability.
Typical production lead time: 15 working days.
Key Data
| Item | Data |
|---|---|
| Model | CVM78E-012DRR0BI-1412 |
| Encoder type | Multiturn absolute encoder |
| Interface | CANopen |
| Communication profile | DS301 |
| Device profile | DS406 / DS417 programmable class 2 |
| Resolution | 12-bit singleturn + 14-bit multiturn |
| Code | Binary |
| Supply voltage | 10–30 VDC |
| Housing execution | Inox |
| Shaft / flange | Ø10 mm solid shaft, servo flange |
| Connection | DR radial terminal compartment |
| Protection class | Explosion-proof, IP66 |
| Main engineering anchor | CANopen terminal and servo shaft |
| Main failure boundary | Terminal wiring error, address conflict, termination error, coupling preload |
