Relay Outputs 

Relays

The FAC-2100 can be ordered with a Standard or Enhanced Relay Board.

Standard Relay Board

The Standard Relay Board contains four Form-C mechanical relays. This is the default ordering option and does not require any additional order codes post-pended to the model number.

Enhanced Relay Board

The Enhanced Relay Board contains three Form-A solid state relays and two Form-C mechanical relays. To order a FAC-2100 with the Enhanced Relay Board, post-pend the model number with '-RX₂X₃X₅', where:

• X_n is either an 'A' or 'D' and specifies if the output is AC or DC, and
• n in X_n is the solid state relay number.

The most common option is '-RAAA' for an Enhanced Relay Board with three AC solid state relays.

Solid state relays offer near zero volt turn-on and near zero current turn-off. This feature makes them ideal options for applications that need to switch inductive loads such as a solenoid or motor.

Mechanical Relay Wiring

Typical Relay Output Wiring for a Non-Inductive Load Using the Standard Relay Board

Solid State Relay Wiring

Typical Relay Output Wiring for a 24 Volt DC Inductive Load using the Enhanced Relay Board and a DC Solid-State Relay

Typical Relay Output Wiring for an AC Inductive Load Using the Enhanced Relay Board and an AC Solid-State Relay