CVM78E-021KRA0BN-1416 can be supported by EncoderWorks with a custom compatible replacement focused on CANopen terminal wiring, 30-bit position mapping, and Ø12 mm clamping-shaft alignment. This model should not be treated like a cable-output encoder. The KR terminal-compartment style, axial exit direction, aluminum housing execution, and 14/16-bit resolution structure create a different replacement boundary.
The CVM78E-021KRA0BN-1416 is a CANopen multiturn absolute encoder configuration with binary code, 16-bit singleturn resolution, 14-bit multiturn range, explosion-proof IP66 construction, aluminum housing execution, Ø12 mm solid shaft, clamping flange, KR axial terminal compartment, and 10–30 VDC supply.
The first failure boundary is CANopen wiring. Power supply, CAN low, CAN high, CAN ground, housing ground, Bus IN, Bus OUT, shielding, and terminal sealing must be checked before startup. If CAN H/L is reversed, the node address is duplicated, or the 121 Ω termination is enabled at the wrong bus position, the encoder may power up but fail to provide stable process data.
This replacement fails when the CANopen node is detected, but the PLC reads no valid or incorrect multiturn value because terminal wiring, node address, baud rate, termination, or DS406 profile settings do not match the original encoder. That is a network-configuration failure, not a sensing failure.
The second boundary is 30-bit parameter agreement. A 16-bit singleturn and 14-bit multiturn structure is not interchangeable with 12/12, 12/16, or 12/13 mapping unless the PLC project is changed. Preset value, counting direction, operating mode, limit switches, cam functions, and overall resolution must be copied before commissioning.
Mechanically, the Ø12 mm solid clamping shaft requires correct coupling alignment. It is not a hollow-shaft installation, so the replacement risk is radial load, axial preload, flange seating, and cable-gland strain rather than bore depth.
The replacement decision should first confirm explosion-proof requirement, aluminum housing, Ø12 mm clamping-flange geometry, KR axial terminal layout, cable-gland sealing, CANopen DS301 / DS406 compatibility, 16-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-021KRA0BN-1416 as an industrial encoder custom compatible solution where CANopen wiring and clamping-shaft mechanics decide field reliability.
Typical production lead time: 15 working days.
Key Data
| Item | Data |
|---|---|
| Model | CVM78E-021KRA0BN-1416 |
| Encoder type | Multiturn absolute encoder |
| Interface | CANopen |
| Communication profile | DS301 |
| Device profile | DS406 / DS417 programmable class 2 |
| Resolution | 16-bit singleturn + 14-bit multiturn |
| Code | Binary |
| Supply voltage | 10–30 VDC |
| Housing execution | Aluminum |
| Shaft / flange | Ø12 mm solid shaft, clamping flange |
| Connection | KR axial terminal compartment |
| Protection class | Explosion-proof, IP66 |
| Main engineering anchor | CANopen wiring and clamp shaft |
| Main failure boundary | Terminal wiring error, address conflict, resolution mismatch, coupling preload |
