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Dual Digital Module

Technical Guide

Environmental Requirements

The Dual Digital Module needs to be installed in an environment which

can maintain a temperature range between -30°F and 150°F and not

exceed 90% RH levels (Non-Condensing).

Mounting

The Dual Digital Module is housed in a plastic enclosure. It is designed

to be mounted by using the 3 mounting holes in the enclosure base. It is

important to mount the module in a location that is free from extreme high

or low temperatures, moisture, dust, and dirt. Be careful not to damage

the electronic components when mounting the module.

See Figure 2 for Module dimensions (dimensions are in inches).

Power Supply and Communications

The Dual Digital Module is connected to the E-BUS Distribution

Module with a modular HSSC cable to provide communications from

the VCM-X Modular Controller. The E-BUS Distribution Module uses

WattMaster Control’s standard I

C modular cable to connect with the

VCM-X Modular Controller, VCM-X Expansion Module, or 12-Relay

Expansion Module.

The Dual Digital Module can also be directly connected to the VCM-X

Modular E-BUS Controller, bypassing the use of the E-BUS Distribu-

tion Module.

The Dual Digital Module requires a 24 VAC power connection with an

appropriate VA rating.

WARNING: Observe polarity! All boards must be wired

GND-to-GND and 24 VAC-to-VAC. Failure to

observe polarity could result in damage to the

boards.

Installation and Wiring

Figure 2: Dual Digital Module Dimensions

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Caple C804C Spécifications Page 4