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GEIST

™

ANALOG-TO-DIGITAL

CONVERTER

Quick Installation Guide

VM1222/590-2253-501B 1

Part Number:

A2D

Description

This analog-to-digital converter

provides the ability to connect a dry

contact, 4-20 mA or a 0-10 VDC

sensor to an RJ12 sensor port.

The following are some types of

analog sensors that can be utilized

with the A2D converter:

• Door Position

• Power Failure

• Water-Sensing Cable

• Flood Sensor

• Isolated Voltage

• Smoke Alarm

• Industry Standard 0-10 VDC or

4-20 mA

NOTE: The A2D sensor can span a

total cable distance up to 600 ft

from the Geist environmental

monitoring device.

Installation

1. Mount the plastic enclosure

anywhere in the data center

with screws, magnets, zip ties

or Velcro tape.

2. Connect the analog and/or dry

contact device to the A2D

sensor by attaching the

common wire to terminal C and

the remaining wire to terminal 1.

3. Plug one end of the uplink

cable into one of the RJ12 ports

of the A2D and plug the other

end into the sensor port (RJ12/

) of the Geist environmental

monitoring device or rack PDU.

NOTE: Sensors can be daisy

chained by plugging an uplink

cable into the second RJ12 port of

the A2D and the other end into

another A2D’s RJ12 port.

Once connected, the Geist

environmental monitoring device

automatically detects and identifies

the sensor.

GeistTM Analog-to-Digital Converter (Front and Rear)

Typical Daisy Chain Configuration of the A2D Converter

To contact Vertiv Technical Support: visit www.VertivCo.com

trademarks or registered trademarks of their respective owners. While every precaution has been taken to ensure accuracy and completeness herein, Vertiv Co. assumes no

responsibility, and disclaims all liability, for damages resulting from use of this information or for any errors or omissions. Specifications are subject to change without notice.