Core Functions

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

2. Triple‑loop PID control: speed, load, auxiliary/cascade pressure regulation, with critical speed avoidance function.

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

4. On‑panel keypad & 2‑line 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, 1A)

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

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

• Communication: RS‑232, RS‑422/485, 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)

• Mounting: Front panel‑mount

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

• Weight: Approx. 4.13 kg

Typical Applications

• Speed‑load control for industrial steam/gas turbines

• Utility power plant turbo‑generator governing systems

• Petrochemical & oil‑gas compressor drive turbines

• Turboexpander and heavy‑duty prime mover safety control