Product Short Description
Product Brief: Integrated digital input and output composite module, realizes collection of field discrete signals and output of switch control signals in one unit, widely used for interlock and sequence control.
Technical Specifications:
- Input Channels: 8 digital input channels, 24 VDC type
Description
- Output Channels: 8 relay output channels
- Relay Contact Rating: 250 VAC / 3 A resistive load
- Operating Temperature Range: 0 °C to +60 °C
- Storage Temperature Range: -40 °C to +85 °C
- Relative Humidity: 5% ~ 95% non-condensing
Functional Features:
- Input and output circuit mutual isolation
- Relay output with mechanical contact isolation
- Channel status LED real-time display
- Built-in surge absorption circuit for inductive load
- Hot-swappable design
- Interlock logic support inside module
Performance Parameters:
- Input Response Time: ≤ 1 ms
- Relay Action Time: ≤ 10 ms
- Mechanical Life of Relay: 10,000,000 operations
- Isolation Strength: 1500 VAC between input, output and backplane
- Bus Communication Speed: 1 Mbps
Material Composition:
- Enclosure: Flame-retardant industrial ABS
- PCB: FR-4 multi-layer printed circuit board
- Relay: Industrial electromagnetic relay with silver alloy contacts
- Terminal Base: High-insulation engineering plastic
Structural Characteristics:
- Standard 3U rack structure compatible with Ovation cabinet
- Front panel divided into input and output indicator areas
- Rear high-density backplane connector
- Integrated guide rail and locking device
Working Principle:
The input part collects on/off signals from field limit switches and interlock contacts and transmits data to DCS controller. The output part receives control commands from the system, drives internal relays to pull in or disconnect, and controls the start/stop of field contactors, solenoid valves and other equipment to complete logic interlock control.
Advantages & Highlights:
- Integrated I/O design reduces cabinet occupancy and wiring workload
- Relay contact isolation enhances system safety
- Strong surge suppression capability for inductive load application
- Reliable long-term operation for interlock control loop
Applicable Industries: Power generation, chemical plant, coal chemical, municipal engineering, industrial boiler control
Model Series: Emerson Ovation DCS Combined I/O Module Series
Installation Requirements:
- Vertical installation on standard DCS rack
- Separate strong current and weak current wiring routes
- Inductive load must be equipped with absorption components
- Keep dry and ventilated installation environment
Usage Notes:
- Do not exceed relay rated voltage and current load
- Regularly check relay contact wear under frequent switching condition
- Avoid wiring confusion between input and output terminals
- Stop related loop operation before module replacement
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