Overview
The AutomationDirect FC-3RLY2 is a compact limit alarm module engineered for real-time monitoring of analog process signals. This module features field-configurable inputs, accepting both current and voltage signals, and provides two independent SPDT (Form C) relay outputs for alarm actuation. With 24VAC/VDC operating voltage and DIN rail mounting, the FC-3RLY2 integrates seamlessly into distributed control systems, panel-based automation, and standalone process monitoring applications.
Key Features
- Two SPDT relay outputs (Form C) rated at 5A @ 250VAC / 5A @ 30VDC
- Field-configurable for current (0–20mA) or voltage (0–15VDC / 0–30VDC) inputs
- 24VAC or 24VDC operating voltage supply
- LED status indication for alarm and run states
- 35mm DIN rail or panel mount flexibility
- Removable screw terminal blocks for simplified wiring and replacement
- Compact plastic housing with latching relay control mode support
Technical Specifications
- Input Signal Ranges: 0–20mA (current) or 0–15VDC / 0–30VDC (voltage)
- Relay Output: (2) SPDT, 5A @ 250VAC, 5A @ 30VDC
- Operating Voltage: 24VAC or 24VDC
- Mounting: 35mm DIN rail or panel mount
- Terminal Blocks: Removable screw terminal (5mm or 3.5mm)
- Control Mode: Latching relay control available (Normal and Failsafe modes)
- Housing: Plastic with LED indication
- Manufacturer: AutomationDirect
Typical Applications
- Temperature and pressure limit monitoring in industrial processes
- Pump and motor protection with overspeed/underflow detection
- Level control and overflow/underflow alarm actuation
- Flow rate monitoring and alarm triggering
- Process condition verification and automatic shutdown logic
- PLC-free distributed control and panel automation
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix and ControlLogix PLC input modules
- Siemens SIMATIC S7 distributed I/O systems
- Omron programmable logic controllers
- Direct Logic (Facts Engineering) PAC systems
- Any 24VAC/VDC industrial control system with analog signal inputs
- Standard 35mm DIN rail enclosures
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The FC-3RLY2 is a current-generation AutomationDirect product; legacy relay output modules or signal conditioners may have different input/output configurations.
Works With
- Analog sensor outputs: 4–20mA transmitters, 0–10VDC sensors
- Thermocouple and RTD signal conditioners (via intermediate conversion)
- Standard alarm logic: high-setpoint, low-setpoint, or band alarm modes
- 24VDC relay control systems and solenoid valve actuation
- Industrial control networks (hardwired alarm logic)
