I. Model and Code

3500/91: EGD Communication Gateway (Half Height)

Typical Order: 3500/91-01-01 (Standard Configuration)

Hardware Versions: 161216-01 (Mainstream), 161204-01 (Old Version)

II. Core Parameters

1. Communication Interface

Protocol: EGD v2.01, Ethernet UDP/IP

Network Ports: RJ45 (10/100BASE-TX); Optional Fiber MT-RJ (100BASE-FX)

Data Capabilities: Real-time upload of all monitoring parameters, alarms, and status

Topology: Independent IP for each module, connected to the factory local area network

2. Electrical

Power Supply: –24VDC (±10%)

Power Consumption: ≈7.4W

Rack Slot: Half Height (occupies 1 slot)

3. Mechanical

Dimensions: 241.3 × 24.4 × 241.8 mm

Weight: ≈0.79 kg

4. Environment

Operating Temperature: –40℃ ~ +70℃

Storage Temperature: –40℃ ~ +85℃

Humidity: 5%–95% RH (No Condensation)

III. Key Features

EGD Exclusive: Optimized for GE DCS systems (such as Mark VI), efficient data interaction

Plug and Play: Equipped with 3500/22M TDI, automatically recognizes rack configuration

Comprehensive Data: Vibration, displacement, temperature, phase, alarms/events all uploaded

Single Module Limitation: One 3500 rack can only install one 3500/91

IV. Differences from 3500/92

3500/91: EGD Protocol, connects to GE control system, half height

3500/92: Modbus TCP/RTU, DNP3, etc., connects to general PLC/DCS, full height

V. Typical Applications

Power Generation / Gas Turbine: 3500 system → 3500/91 → GE Mark VIe DCS

Petrochemical Compressor Unit: Real-time upload of vibration/rotational speed to the upper computer

Factory Digitalization: Unified collection of 3500 data from multiple racks