United Automation AFM11, Thyristor Trigger Module

Phase angle trigger module for resistive & inductive loads.

Single phase or phase-to-phase use
Fires triacs & thyristors up to 480V
Resistive & inductive, ac/dc loads
Adjustable soft-start
Adjustable current limit
Voltage control or 4-20mA current loop
Pulse train firing via remote power transformer
Low power consumption
Status indication

Power transformer NOT included

The number of complete mains cycles during fixed repeating periods (typically 1 to 10 seconds) is varied, thus altering the duty cycle or on-/off-time ratio. Trigger pulses coincide with the zero-crossing times of the mains supply thus ensuring no RFI is produced when using resistive loads.