Ac Input Connections - ControlByWeb WebRelay X-WR-1R12-1I5-5 User Manual

Single relay and input module
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Installation and Connections

2.4.3 AC Input Connections

If an AC signal voltage needs to be detected, use a signal conditioner to convert the AC signal to a DC
voltage within the input range. An AC signal conditioner can be made using a diode (or bridge rectifier)
and a capacitor. Pre-packaged signal converters are available as accessories at industrial automation
distributors. A simple voltage converter module (RedLion VCM10000 or VCM20000) is shown below.
These are available in two input voltage ranges that cover the spectrum from 4-270VAC/DC.
These devices have a MOSFET output (solid state DC contact closure) which is compatible with the
WebRelay input. The converter module accepts AC (50/60 Hz) or DC voltages with an input pulse rate
up to 30 Hz. The converter provides isolation between the input and output using an opto-isolator. You
must provide a voltage source for the converter circuit as shown in the example below:
Page 20
WebRelay Users Manual
Xytronix Research & Design, Inc.

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