A custom compatible encoder solution can be provided for FG40K-2500G-90G-NG in maintenance, retrofit, replacement, and upgrade projects. This model combines 2500 pulses per revolution with radial terminal box connection and NG reference pulse logic on the FG40 solid-shaft platform. Typical production lead time: 15 working days. The engineering objective is to preserve controller-side pulse mapping, field wiring continuity, and original shaft-coupling installation fit.
Technical Overview of the FG40K-2500G-90G-NG Encoder
The FG40K-2500G-90G-NG belongs to the FG40 square-wave incremental platform and uses a push-pull line driver with 2500 ppr output. The NG option adds a reference pulse with inverted signal, which supports applications requiring a defined index relationship in addition to quadrature pulse tracking.
Mechanically, the platform uses a solid shaft with 11j6 x 30 mm dimension and radial terminal box connection, making it suitable for industrial drive and motion feedback applications where serviceable installation is important.
Industrial Integration Considerations
For this model, 2500 ppr often reflects a deliberate compromise between available controller frequency margin and required position granularity. In retrofit work, preserving this pulse density is usually more useful than choosing a nearby standard value if the original controller logic was tuned around 2500 pulses.
The shaft and coupling arrangement should also remain aligned with the original installation to avoid bearing stress and signal instability caused by misalignment.
Field Installation and Wiring Notes
Cable shielding, EMC routing, and grounding strap continuity should remain aligned with the original installation. Wiring should be kept away from high-interference devices, and terminal-box sealing practice should remain unchanged.
The coupling should be mounted without force. Mechanical misalignment can increase radial forces and reduce both bearing life and output quality.
Custom Compatible Encoder Solution
A custom compatible encoder solution for FG40K-2500G-90G-NG should preserve five engineering points: 2500 ppr structure, radial terminal box continuity, NG reference pulse logic, push-pull signal behavior, and shaft-side mechanical fit. This helps maintain both counting continuity and serviceable field integration.
Custom Solution Photos
Lead Time and Custom Development
Typical production lead time: 15 working days.
Main checkpoints include shaft fit, coupling alignment, pulse-count continuity, EMC wiring practice, and reference pulse handling in the original control system.
Typical Technical Parameters
| Parameter | Specification |
|---|---|
| Encoder Type | Incremental encoder |
| Model | FG40K-2500G-90G-NG |
| Output Type | Square-wave pulse output |
| Resolution | 2500 ppr |
| Output Stage | Push-pull line driver |
| Reference Signal | Reference pulse with inverted signal |
| Supply Voltage | 12 ... 30 V DC |
| Max. Output Frequency | 200 kHz |
| Shaft Type | Solid shaft |
| Shaft Dimension | 11j6 x 30 mm |
| Connection Type | Terminal box |
| Exit Position | Radial |
| Protection Rating | IP65 |
| Operating Temperature | 0 ... +70 °C standard |
| Shock Resistance | 150 g |
| Vibration Resistance | 20 g |
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