EncoderWorks develops the FG 40 K-10000G-90G-NG-B5 custom compatible replacement solution around high-count incremental feedback where 10000 PPR scaling, A/B 90° quadrature, inverted signal pairs, NG reference-pulse behavior, terminal-box wiring, output-driver compatibility, and B5 code confirmation must remain matched to the installed counter. The failure boundary is not a fieldbus telegram or an absolute data word, but missed high-rate edges, phase jitter, wrong pulse scaling, reference-pulse mismatch, shield noise, driver overload, terminal mapping error, and mechanical fit uncertainty. Typical production lead time: 15 working days.
This model is used where the controller reads speed, direction, and position from high-resolution incremental channels and uses the NG reference pulse for homing, indexing, or synchronization. A compatible replacement must preserve the 10000 pulses per revolution, 90° channel relationship, inverted A/B/N signal requirement, reference-pulse behavior, output level, terminal assignment, cable shield path, shaft or flange interface, and the installed B5 configuration.
System Limits
The first system boundary is the 10000 PPR counter interface. FG 40 K-10000G-90G-NG-B5 must be checked against maximum input frequency, edge evaluation mode, A/B direction logic, reference-pulse width, inverted-signal use, output-driver type, supply level, cable length, and controller noise margin. If the replacement is supplied as 5000 PPR, 8192 PPR, 10240 PPR, or without the required inverted and reference channels, the controller may still count pulses while travel scaling, speed feedback, direction detection, or index repeatability becomes unreliable. At higher shaft speed, 10000 PPR can push the counter, cable, and line driver close to their usable edge-rate limit.
The second boundary is the terminal-box and mechanical installation. Terminal assignments, 0 V reference, shield bonding, cable gland, housing ground, PE continuity, and the B5-related mounting or output detail must be confirmed before production. A correct 10000 PPR encoder can still fail if the terminal-box shield is high impedance, the signal cable runs beside brake or drive wiring, the line driver cannot support the cable length, or the shaft and flange interface introduces eccentric load. Coupling alignment, axial movement, radial load, vibration, grounding continuity, and connector or terminal access should be checked together.
Wiring & Installation
Before replacement, confirm the complete installed model code, 10000 PPR requirement, A/B 90° phase relationship, NG reference-pulse use, inverted output requirement, output circuit, supply voltage, maximum shaft speed, counter input frequency, terminal-box layout, cable-entry direction, shield termination method, shaft or flange geometry, and the exact meaning of the B5 suffix on the installed unit. This model should not be inferred from hollow-shaft FGH6 or HOG163 variants because the mechanical platform, signal naming, terminal layout, and mounting boundary may be different.
During installation, verify A, B, reference, inverted channels, supply, 0 V, shield, and housing ground before powering the system. Keep the feedback cable away from motor, brake, SCR, and VFD wiring, and avoid using the cable shield as a load-carrying ground conductor. The encoder shaft or coupling must run concentrically without axial preload or radial side load. At 10000 PPR, small mechanical eccentricity or shield noise can appear as phase jitter, intermittent count loss, unstable speed feedback, or poor reference-pulse repeatability.
Custom Compatible Solution
- Match 10000 PPR incremental feedback, A/B 90° quadrature, inverted A/B/N signals, NG reference behavior, and controller counter expectations
- Preserve terminal-box wiring, output-driver compatibility, supply reference, shield continuity, grounding path, and cable-entry boundary
- Adapt the shaft or flange interface, coupling geometry, housing style, cable access, and B5-related installed configuration after confirmation
- Review counter frequency margin, maximum shaft speed, line-driver loading, EMC exposure, reference repeatability, vibration, and commissioning checks before shipment
Key Data
| Item | Data |
|---|---|
| Model | FG 40 K-10000G-90G-NG-B5 |
| Encoder type | Heavy-duty incremental encoder |
| Feedback type | Incremental A/B with reference pulse |
| Pulse count | 10000 PPR |
| Phase relationship | A/B, 90° quadrature |
| Inverted signals | G, inverted output signal boundary |
| Reference pulse | NG reference pulse with inverted signal |
| Connection | K, terminal box |
| Output circuit | Requires confirmation against installed counter input |
| Supply voltage | Requires confirmation against installed version |
| B5 suffix | Requires confirmation from nameplate, drawing, or old unit |
| Key system checks | 10000 PPR scaling, counter frequency, A/B direction, NG reference, inverted channels, output driver, shield grounding |
| Key mechanical checks | Shaft or flange fit, coupling alignment, runout, axial load, radial load, vibration, cable-entry clearance |
| Replacement focus | High-count counter margin, terminal-box mapping, NG reference behavior, B5 configuration confirmation |
