Description

Delta Controls’ DDM-880 dimming module are specifically designed for Daylighting

applications using dimmable ballasts. These dimming modules connect to Delta’s

BACnet Controllers over Delta’s LINKnet network.

Each of the device’s eight outputs is capable of controlling up to fifty 1-10V dimming

ballasts. Each output has an associated photocell input with a calibration potentiometer

to adjust sensitivity of the input which the controller uses in a built-in Proportional-

Integral (PI) loop to smoothly adjust the lighting levels to the desired setpoint.

Application

The DDM-880 provides up to eight channels of simple distributed daylighting control

per module reducing field wiring by being able to locate the module close to the zones

being controlled.

Ordering

Order the controller and desired options with the following product numbers: DDM-880 –Delta Dimming Module with (8) Photocell Inputs, (8) 1-10V outputs.

Features

— Built-in PI control loop

— Communicating on LINKnet

— Easy-to-mount housing

— Calibration potentiometer for photocell inputs

Specifications

Inputs

8 x Analog Photocell Inputs – 10 bit

Calibration potentiometer Outputs

8 x 1-10V Analog Outputs

25mA current sinking each Technology

8-bit Processor with internal A/D,

Flash and RAM Communications Port

LINKnet connection

Delta LINKnet @76,800 bps

RS-485 Device Address

Set via dip switch

Address range: 1 to 12 Connectors

Removable screw-type terminal connectors Wiring Class

Class 2 Power

24 VAC

15 VA Ambient

-40o to 140oF (-40o to 60oC), with enclosure 10 - 90% RH (non-condensing)

Internal electronics rated from -40o to 85o Dimensions

7 5/8 x 4.0 x 1 7/8 in. (19.2 x 10 x 4.8 cm)

with housing

0.55 lb. (250g) with housing Listings

UL916 Listed

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