The replacement boundary for EVM78E-012DRRPBI-1213 is defined by three points at the same time: PROFINET project compatibility, 13-bit/12-bit absolute scaling, and the Ex-rated Inox servo-flange installation. EncoderWorks can configure a custom compatible replacement solution for this model when the installed PLC expects the same device behavior, terminal-compartment wiring, radial cable entry, and ø10 mm solid-shaft coupling. Typical production lead time: 15 working days.
This configuration belongs to the EVM78E PROFINET multiturn absolute encoder family. It combines 13-bit singleturn resolution, 12-bit multiturn range, binary output code, 10–30 VDC supply, a flameproof 78 mm housing, Inox 1.4404 mechanical construction, servo flange, ø10 mm × 20 mm solid shaft, radial cable exit, and DR terminal compartment with two cable glands. Replacement work should focus on GSDML compatibility, device name, IP address, cyclic data length, preset value, counting direction, IRT/RT cycle timing, shield grounding, cable-gland sealing, and coupling alignment.
System Limits
The first system limit is PROFINET commissioning. Device name, IP address, GSDML file, update time, IRT or RT class, position data format, preset value, scaling, and counting direction must match the existing PLC project. If the encoder goes online with a different data layout or parameter set, the network may look healthy while the axis receives the wrong position.
The second limit is the reduced multiturn range compared with 14-bit variants. This model uses 12-bit multiturn plus 13-bit singleturn feedback. If a controller project was built for a 14-bit multiturn encoder, the position range, wrap behavior, scaling factor, and software limits must be checked before replacement.
The mechanical and Ex limit is the servo flange with radial DR cable-gland entry. Coupling misalignment, axial preload, radial load, poor cable-gland sealing, or weak shield bonding can create bearing stress, EMC faults, or intermittent PROFINET diagnostics in hazardous-area installations.
Wiring & Installation
Before replacement, record the PLC hardware configuration, GSDML file, device name, IP address, IRT/RT setting, position format, preset value, scaling, counting direction, diagnostics, and terminal-compartment wiring. Confirm the cable-gland type, cable diameter, stopping-plug requirement, and whether the installed cable entries are suitable for the hazardous-area enclosure.
During installation, align the ø10 mm shaft coupling without axial force and keep the servo flange square to the mounting face. Route Ethernet and power wiring away from inverter and motor cables, bond the shield with a low-impedance connection, and close the terminal compartment without damaging the sealing path. After startup, verify online status, actual position, multiturn counting, direction, preset response, diagnostics, and repeatability over several machine cycles.
Custom Compatible Solution
EncoderWorks can configure the replacement around the installed PROFINET and mechanical system:
- Match 13-bit singleturn plus 12-bit multiturn binary absolute position behavior
- Preserve PROFINET device identity, GSDML compatibility, IRT/RT cycle timing, scaling, preset, direction, and diagnostics
- Adapt the Inox flameproof housing, servo flange, ø10 mm solid shaft, radial exit, and DR terminal compartment with two cable glands
- Review cable-gland sealing, shield grounding, terminal mapping, EMC routing, coupling preload, and hazardous-area installation limits
Key Data
| Item | Data |
|---|---|
| Model | EVM78E-012DRRPBI-1213 |
| Encoder type | Absolute multiturn encoder |
| Interface | PROFINET |
| Resolution | 13-bit singleturn + 12-bit multiturn |
| Output code | Binary |
| Supply voltage | 10–30 VDC |
| Housing | Flameproof, Inox 1.4404 / AISI 316L |
| Flange | Servo flange |
| Shaft | ø10 mm × 20 mm solid shaft |
| Connection | Radial terminal compartment, 2 cable glands |
| Protection | IP66 |
| Key checks | GSDML, device name, IP, IRT/RT cycle, scaling, cable-gland sealing |
