This product is a DC servo amplifier with encoder tachometer. It works with a voltage of +18 to +55VDC and has a maximum output power of 5A. It can be used in velocity loops, such as PLCs and speed controls.
The Model 405 is a compact DC servo amplifier that delivers four‑quadrant power for brush motors in velocity‑loop applications. It supports incremental quadrature encoders or brush tachometers, offering up to 500 W peak power and configurable current limits for high‑acceleration performance.
This manual describes the product’s features, functional diagram, internal sockets and jumpers, connector pinouts, technical specifications, and step‑by‑step setup procedures. It also covers grounding, power‑supply requirements, fault reset methods, and mechanical dimensions to aid installation and service.
| Peak output power | 500 W (10 A @ 50 V for 0.5 s) |
|---|---|
| Continuous output power | 250 W (5 A @ 50 V) |
| Maximum continuous output current | 5 A at 55 °C |
| Bandwidth | 2.5 kHz (small‑signal –8 dB) |
| PWM switching frequency | 25 kHz |
| Logic input thresholds | HI > 2.5 V, LO < 1.0 V |
| Power‑supply voltage range | +18 V to +55 V DC |
| Dimensions | 4.75 × 3.27 × 1.28 in (121 × 83 × 32.5 mm) |
| Weight | 0.61 lb (0.28 kg) |
The Model 405 can deliver a peak current of 10 A at 50 V for up to 0.5 seconds, providing 500 W of power.
Ground the /RESET input to clear over‑temperature or short‑circuit faults; the unit will self‑reset every 50 ms when the input is grounded.
It operates from a single supply voltage of +18 V to +55 V DC.
The amplifier measures 4.75 × 3.27 × 1.28 in (121 × 83 × 32.5 mm).