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GE 0273B0220704
The GE 0273B0220704 is a relay output module for the GE Mark V / Mark VI distributed control system (DCS), providing multi-channel relay contact outputs for driving field actuators such as solenoid valves, contactors, and indicator lamps.
Technical Specifications
- Channels: 8 (0273B family standard)
Detailed content
- Relay Type: Form C (SPDT, single-pole double-throw)
- Contact Rating: 5 A @ 250 VAC / 5 A @ 30 VDC resistive load
- Contact Life: 100,000 operations at rated load
- Coil Voltage: 24 VDC
- Coil Power Consumption: ≤ 0.5 W per channel
- Response Time: ≤ 10 ms typical
- Inter-channel Isolation: Electrically isolated
- Insulation Voltage: 1500 VDC (channel to ground)
- Power: 24 VDC from Mark V/VI rack backplane
- Operating Temperature: 0°C to 60°C
Functional Features
- 8 independently isolated relay outputs
- Form C contacts (NO + NC + COM) per channel
- Latch (self-holding) output support
- Contact state feedback on supported configurations
- Front-panel channel status LED indicators
- Hot-standby redundancy support
Structural Characteristics
- Standard Mark V/VI I/O module form factor
- Plug-in construction with hot-swap support
- Front-panel LED status indicators
- Rear backplane: Mark V/VI standard bus interface
- Bottom relay output terminal block with screw terminals
Installation Requirements
- Install in a standard Mark V/VI I/O rack
- Rack ground resistance ≤ 4 Ω
- Ambient temperature 0°C to 60°C, relative humidity 5% to 95% non-condensing
Usage Precautions
- Never exceed contact current and voltage ratings
- Always add a flyback diode across inductive loads (solenoid valves, contactor coils) when coil voltage ≤ 30 VDC
- When configured for redundancy, enable redundancy management in the system
- Confirm all output loads are correctly wired before energizing the module
Target Industries
Thermal power, petrochemical, water treatment, manufacturing, and building automation.
