F4901 11a 24v Schematic Install -

The numbers below reflect standard industrial and automotive relay terminal naming conventions (ISO 7588). Check your specific casing diagram to confirm matching numbers. Terminal Number Designation Description Connection Target Coil Ground Negative side of the control loop System ground or negative chassis 86 Coil Trigger Positive side of the control loop 24V DC switch, PLC output, or controller 30 Common (COM) Power input for the load Fused 24V DC or AC main power supply 87 Normally Open (NO) Connects to COM when relay is active Primary load (fan, motor, light) 87a Normally Closed (NC) Connects to COM when relay is idle Secondary load or indicator light (if applicable) F4901-11A 24V Circuit Schematic

Secure the relay inside an electrical enclosure, dashboard box, or DIN rail tray. Keep the device away from direct high-heat sources or moving mechanical parts. If installing in a marine or automotive environment, position the terminals pointing downward to prevent moisture from pooling inside the connector sockets. Step 3: Wire the Control Circuit (Coil)

[24 VAC Transformer] |____(Hot R)___________________________ [Thermostat R] | | | (Cooling/Heating Call W/Y) | | |_________________ v | [Actuator Terminal 2 / Switched Hot] |____(Neutral C)__|_____________________ [Actuator Terminal 3 / Neutral] | |_____________________ [Actuator Terminal 1 / Constant Hot] [Boiler/Pump Controller] |____(T1 T-Terminal)____________________ [Actuator End Switch Terminal A] |____(T2 T-Terminal)____________________ [Actuator End Switch Terminal B] f4901 11a 24v schematic install

: Insufficient control voltage. Test Pin 2 with a voltmeter to confirm it receives the correct trigger potential when switched on. Symptom: Device becomes excessively hot during operation

| Wire Color (Typical) | Function | Description | | :--- | :--- | :--- | | | Power (+) | Connect to Constant 24V Power (Battery Positive). | | Black | Ground (-) | Connect to Vehicle Chassis Ground or Battery Negative. | | Yellow | Ignition (ACC) | Connect to the vehicle's ignition key switch (24V when key is ON). | | Orange | Relay Output | Used to control an external relay (e.g., fuel cut-off/immobilizer). | | White | CAN High | Connects to Vehicle CAN Bus High line. | | Green | CAN Low | Connects to Vehicle CAN Bus Low line. | | Blue | Digital Input 1 | Typically used for SOS button or Door sensor. | | Other Colors | Analog/Input | Used for fuel sensors or temperature sensors. | The numbers below reflect standard industrial and automotive

This technical article provides the complete schematic layout, step-by-step physical installation procedure, and essential safety rules for safely integrating the F4901 into your 24V DC infrastructure. 1. System Specifications and Requirements

Follow the connection diagram on the device casing to match coil voltage (24V) with control logic. Keep the device away from direct high-heat sources

Connect your target device (e.g., a fan, motor, or light) to the terminal.