Core Functions

1. Dual control modes: isochronous mode for single‑unit constant‑speed operation; droop mode for multi‑unit parallel load sharing.

2. Multi‑loop PID control: speed, load, inlet/exhaust pressure, extraction header pressure regulation, with critical speed avoidance function.

3. Built‑in startup ramp, warm‑up control, load rejection protection, overspeed trip test and zero‑speed detection.

4. Integrated 30‑key tactile keypad & LCD display for local parameter configuration, real‑time monitoring and fault logging.

5. Supports Modbus‑RTU/ASCII communication and 4‑20 mA analog signals for seamless DCS/PLC integration.

Electrical Specifications

• Power Supply: 18–32 VDC (nominal 24 VDC)

• Speed Input: Magnetic pickup (MPU), frequency range 0.5–25000 Hz

• I/O Configuration: 2 actuator outputs, 6 analog inputs, 6 analog outputs, 16 discrete inputs, 8 relay outputs

• Communication: RS‑232, RS‑485 dual‑port Modbus protocol

• Control Precision: ±0.25% steady‑state speed regulation accuracy

• Certifications: CE, UL, Class 1 Div 2 hazardous area compliant

Environmental & Mechanical Features

• Operating Temperature: −40 °C ~ +70 °C

• Protection Grade: IP56 (front panel), IP20 (rear terminals); NEMA 4X optional

• Mounting: Front panel‑mount

• Dimensions: 355.6 × 279.4 × 101.6 mm (14×11×4 inch)

• Weight: Approx. 2.72 kg (6.00 lbs)

Typical Applications

• Speed‑load & extraction control for industrial steam/gas turbines

• Power plant turbo‑generator governing systems

• Petrochemical & oil‑gas compressor drive turbines

• Turboexpander and heavy‑duty prime mover safety control