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Installation & Operating Instructions

EMC-DMA-2.0

Energy Management Consultants, 1550 La Follette Street, Fennimore, WI 53809

Tel. +1-608-822-3550 • Fax +1-608-822-3847 • E-mail: [email protected] • Web: www.emccontrols.com

Specifications subject to change without notice.

rev. 04/15/19

43273_ins_DMA_2.0

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Product Identification and Overview

Specifications

Fig. 2:

 DMA-2.0 

Mounting Diagram

The DMA-2.0 is a door monitor assembly that monitors a 

door switch. Green, amber, and red LEDS on the face of 

the unit indicate whether the door is closed, open, or has 

exceeded its user-selectable open time period. 
Leaving the door open for more than the user-selected time 

will also energize a buzzer to alert personnel nearby that the 

door should be closed immediately. The unit also contains 

two auxiliary relays that will energize whenever the door is 

opened to alert other user-supplied warning devices or a 

building automation system.
A green LED inside the unit illuminates whenever power is 

present and red LEDs illuminate when the auxiliary relays 

are energized to assist with installation and troubleshooting.
The unit is powered by 24 VAC or 24 VDC.

Supply Power: 

24 VAC or 24 VDC (UL Listed Class 2 Power Source only)

Power Consumption (max):

 7.5 VA @ 24 VAC, 200 mA @ 24 VDC

Auxiliary Relay Contact Rating:

 1.0 Amp @ 30V AC/DC

Wire Size:

 14 to 22 AWG

Door Switch:

 Normally closed (NC)

Environmental Operation Range:

Temp: 0° to 60°C (32 to 140°F)

Humidity: 5% to 95% RH non-condensing

Mounting

Fig. 1:

 DMA-2.0 Unit

Summary of Contents for EMC-DMA-2.0

Page 1: ...selected time will also energize a buzzer to alert personnel nearby that the door should be closed immediately The unit also contains two auxiliary relays that will energize whenever the door is opened to alert other user supplied warning devices or a building automation system A green LED inside the unit illuminates whenever power is present and red LEDs illuminate when the auxiliary relays are e...

Page 2: ...the buzzer will sound Closing the door will de energize both of the Auxiliary Relays silence the buzzer if it is on and change the color of the Door Status LEDs The Auxiliary Relays are energized whenever the door is open and de energized whenever it is closed The Door Status LEDs on the face of the unit change colors depending on the conditions listed in the table below Door Status Additional Con...

Page 3: ...ng this period a new 5 minute count down period is started The Door Status LEDs will change to green once the 5 minute period has expired Door Timer Interval SECONDS or MINUTES Switch 3 of DIP Switch S2 Normal operation is set to OFF MINUTES For a quick confidence test this switch can be set to SECONDS by placing it to the ON position This means that the buzzer will sound after 1 to 30 seconds dep...

Page 4: ...Possible Solutions Confirm that there is 24 VAC or 24 VDC at connector TB1 and that the polarity is correct Make sure that the unit is in Operate mode not Test mode DIP Switch S2 Confirm that the door switch is wired as a Normally Closed NC connection a closed door equals an open circuit Check for loose or shorted wires at the Door Switch connection Make sure that the unit is in Operate mode not T...

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