Technical Specifications:

Functional Features:

• 32 independent relay output channels with SPDT (Form C) contact configuration
• Full dual-redundant architecture — both primary and backup modules operate simultaneously; automatic switchover occurs within <50ms upon primary failure
• Each channel supports individually configurable ON/OFF status via F3 engineering software (CENTUM VP System View / CS 3000)
• Channel-level diagnostics — open circuit detection, short circuit detection, contact weld detection
• Group output function — supports batch ON/OFF control for up to 32 channels simultaneously
• Fail-safe output setting — user-definable output state upon module failure or communication loss (HOLD / OFF / ON)
• Hot-swap capable — module replacement without system shutdown

Structural Features:

• Front-facing terminal block with spring-clamp screw terminals for field wiring
• LED status indicators per channel (green = ON, red = fault)
• Redundancy status LED (green = synchronized, red = fault)
• F3 bus connector at rear for carrier backplane connection
• Galvanic isolation between output channels and internal logic circuitry
• Conformal-coated PCB for enhanced environmental resistance

Working Principle:

The module receives digital output commands from the F3 control engine via the high-speed F3 Bus. The internal processor decodes the command and energizes the corresponding electromagnetic relay coil. The relay contacts switch the external field load circuit. In redundant mode, a second identical module mirrors all output states in real time. The F3 I/O carrier continuously monitors both modules; upon detection of a primary module fault, the carrier seamlessly transfers all output control to the backup module with zero process interruption.

Advantages & Highlights:

• High channel density — 32 points in a single module saves cabinet space
• True dual redundancy with automatic failover ensures 99.999% availability
• Relay output provides galvanic isolation from the control system — ideal for high-voltage or noisy field environments
• Fast response time (≤10ms) suitable for solenoid valve and motor starter control
• Comprehensive diagnostics reduce unplanned downtime
• Hot-swap capability enables online maintenance

Applicable Industries:

• Oil & Gas — refinery process control, pipeline SCADA
• Chemical & Petrochemical — batch reactor control, utility systems
• Power Generation — boiler control, turbine auxiliary systems
• Water & Wastewater — pump station control, valve actuation
• Pharmaceutical — batch process control
• Pulp & Paper — machine control systems

Installation Requirements:

• Install in F3 I/O carrier (F3AIO/F3DIO) with proper slot allocation
• Maintain minimum 10mm clearance above and below module for airflow
• Field wiring to screw-clamp terminal block — use 0.5 to 2.5mm² (AWG 20–14) stranded copper wire
• Ensure proper grounding of module chassis to control system ground bus
• Verify redundant pair configuration in CS 3000 engineering software before commissioning

Usage Precautions:

• Do not exceed rated load of 2A @ 250V AC per channel — overloading causes contact welding and premature failure
• Do not apply voltage to relay contacts exceeding 250V AC / 30V DC
• For inductive loads (solenoid valves, relays), install suppression diodes or RC snubber circuits across the load to prevent back-EMF damage
• Perform periodic contact resistance check during scheduled maintenance
• Replace module only with identical F3YD32-1A to maintain redundancy integrity