tekmar 040 RDM User Manual

- Data Brochure

D 040

Remote Display Module (RDM) 040

05/07

The tekmar Remote Display Module (RDM) 040 provides the user with a remote interface to any tekmar control that is tekmar NetTM (tN2) capable. The RDM can be used to view and / or adjust the settings on the control that it is connected to, or on any Room Temperature Unit (RTU) that may be connected to the control. The RDM can display any of the system and status indicators visible on the control or RTU. It also has a built in alarm contact that can be used to trigger an external alarm if either a control or sensor error occurs.

Installation

STEP ONE

Place a screwdriver or similar object into the small slot located in the top of the RDM. Push the screwdriver against the plastic tab, and pull the top of the front cover so that it pivots around the bottom edge of the RDM.

STEP TWO

The base of the RDM should be securely installed in the desired location. Mount the RDM directly to the desired location using two #6-1” screws. The screws are inserted through the mounting holes and must be securely fastened to the desired location. If possible, at least one of the screws should enter a wall stud or similar surface. If the RDM is to be mounted to a 2” x 4” electrical box, order an Adaptor Plate 007. This plate mounts to the electrical box and the RDM will then mount to the plate.

REMOVING THE FRONT COVER

MOUNTING THE RDM

To Control

#6 1” screws

STEP THREE

WIRING THE RDM

Run 18 AWG twisted pair or similar wire between the RDM and the control. Insert the wires through the hole provided in the

Com

tN2

back of the RDM enclosure and connect them to the Com and the tekmar NetTM (TN2) terminals. Do not run the wires parallel to telephone or power lines as this may interfere with the operation of the RDM. If the RDM wires are located in an area with strong sources of electromagnetic noise, shielded cable should be used or the wires can be run in a grounded metal conduit.

NOTE: Do not apply power to the RDM. The RDM is to be wired directly to the control. The connection between the control and the RDM is polarity sensitive. The Com terminal of the RDM must be connected to the Com terminal of the control and the tekmarNetTM (tN2) terminal of the RDM must be connected to the appropriate terminal of the control. If the wires are reversed, the display on the RDM will remain blank and the control will display a short circuit error for the tekmarNetTM (tN2) device.

STEP FOUR

WIRING A REMOTE ALARM

The RDM comes with a built in alarm contact. This contact will close anytime either a sensor or control error is detected by the control. The contact will remain closed

Warning

until the error is cleared. To clear the error message on the RDM and turn off the alarm relay, refer to the control Data Brochure. This contact will also close if a Warning in the control is triggered. However, if a warning is triggered, the alarm contact will only remain closed for 60 seconds.

24 V(ac or dc)

24 V(ac)

Low Voltage

Alarm

After 60 seconds, the warning message will continue to be displayed, but the alarm contact will be shut off. To clear the warning message, the keypad of the RDM must be pressed as described in the control Data Brochure.

Between terminals 1 and 2, the contact is capable of switching a low voltage signal that is less than 0.5 Amps. This switch can be used to operate a low voltage alarm device directly, or it can be used to energize an external relay to trigger a line voltage or high current alarm device.

Com

STEP FIVE

INSTALLING THE FRONT COVER

Align the hinges on the bottom of the front cover with the bottom of the RDM mounting base. Pivot the front cover around the bottom hinges and push the top against the mounting base until it snaps firmly in place.

+ 2 hidden pages