EVM78E-011DRRPBN-1213 should be replaced as an aluminum-housing PROFINET Ex encoder with a 13-bit singleturn and 12-bit multiturn position range, not as a generic 78 mm fieldbus encoder; EncoderWorks can configure a custom compatible replacement solution when the existing PLC project, DR terminal-compartment wiring, clamping flange, ø10 mm shaft coupling, and hazardous-area installation limits must remain unchanged. The main failure boundary is a replacement that goes online but changes scaling, housing suitability, shield grounding, or preset behavior. 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, 25-bit overall configured position capacity, binary output code, 10–30 VDC supply, flameproof 78 mm aluminum housing, clamping 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 layout, preset value, counting direction, IRT/RT cycle timing, cable-gland sealing, shield bonding, and whether aluminum housing is acceptable for the installed environment.
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 replacement uses a different data layout or resolution setting, the network may appear normal while the machine receives the wrong absolute position.
The second limit is the 13-bit singleturn and 12-bit multiturn range. This model should not be configured like a 12-bit singleturn, 14-bit multiturn, or 16-bit high-resolution version. Wrap behavior, engineering-unit conversion, preset storage, software travel limits, and modulo logic must be checked before startup.
The third limit is the aluminum flameproof housing with radial DR cable-gland entry. Compared with an Inox version, housing material suitability should be reviewed against corrosion, washdown, chemical exposure, outdoor conditions, and site specifications. Cable-gland sealing, shield bonding, grounding path, coupling alignment, axial preload, and radial load also affect long-term feedback stability.
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 two cable glands, cable diameter, sealing condition, shield termination, grounding path, and whether the aluminum housing is permitted by the installation specification.
During installation, align the ø10 mm shaft coupling without axial force and keep the clamping flange square to the mounting surface. 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, 13-bit singleturn response, 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 aluminum flameproof housing, clamping flange, ø10 mm solid shaft, radial exit, and DR terminal compartment with two cable glands
- Review housing-material suitability, cable-gland sealing, shield grounding, terminal mapping, EMC routing, coupling preload, and 25-bit range scaling
Key Data
| Item | Data |
|---|---|
| Model | EVM78E-011DRRPBN-1213 |
| Encoder type | Absolute multiturn encoder |
| Interface | PROFINET |
| Resolution | 13-bit singleturn + 12-bit multiturn |
| Overall resolution | 25-bit configured range |
| Output code | Binary |
| Supply voltage | 10–30 VDC |
| Housing | Flameproof, aluminum |
| Flange | Clamping 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, housing material, 25-bit scaling |
