OSRAM PS 30 User Manual

OT DMX 3x350 DIM LI

3-channel dimmer
Operating instructions

Description

Purpose and application

The 3-channel dimmer OT DMX 3x350 DIM LI is used for con­necting constant current LEDs and enables the user to create
homogeneous colour moods, simulate daylight and create
dynamic lighting effects in combination with appropriate DMX
control units and user interfaces (e.g. OSRAM EASY DMX SO
and related user interfaces: EASY Color Drive, EASY Hybrid
Remote and EASY Touch Panel).

Function

The connection of the dimmer to a DMX network control unit
(e.g. OSRAM EASY DMX SO) and the assignment of DMX
addresses make it possible to individually control the three
constant current LED outputs (channels).

Design

The dimmer is made up of the following components:

• “LED Output” push-in terminals for connecting the LED
luminaires (A):

E

D
C

A

B

– LED output 1 = CH1+, CH1­ – LED output 2 = CH2+, CH2­ – LED output 3 = CH3+, CH3-

• “DMX In” connections for DMX signal input (B)

• Button for manually setting the DMX addresses (C). The
default starting address is 1 (Addr. 1 = CH1, Addr. 2 = CH2,
Addr. 3 = CH3).

• “PWR In” push-in terminals for connecting the power supply
(D)

• “Status”/”DMX” LEDs (E)

X 2011

OT-DMX-3x350-DIM-LI_en_ba1110_we1.01.indd

OSRAM GmbH
Kunden Service Center
Customer-Service-Center (CSC)

Steinerne Furt 62
86167 Augsburg
Germany

Tel.: [phone] - 200
(kostenpichtig / charges apply)
Fax.: [phone] - 202

www.osram.com

www.osram.de

Installation

F

10-24V DC

LED display

The integrated LEDs indicate the state of the power supply and
DMX communication:

LED "Status" (yellow) "DMX" (green)

OFF/
ickers

ON Normal operation DMX signal detected

ashing Waiting for DMX signal during

Power supply not
connected

No DMX connection/
No DMX signal detected

manual addressing

Safety instructions

The dimmer must only be installed and put into operation by
a qualied electrician. The applicable safety regulations and
accident prevention regulations must be observed.

CAUTION!

Destruction of the dimmer and other devices
through incorrect mounting!

• Ensure that the connecting lines of the power
supply are sized to conduct the total current
required for the LED luminaires.

• Note the device labelling.

Connecting the power supply

A power supply unit is needed for the dimmer and LED lumi­naires. Follow the safety instructions.

The LED outputs are protected against short circuits. The af­fected output is switched off in the event of a short circuit.

F Power supply unit

40083216020602

4008321602060

Page 1 of 2

Installation (cont.)

LED output 1

Connecting the DMX components

Control unit (OSRAM EASY DMX SO or equivalent):
“DMX In” (B)

Optionally, up to 32 dimmers (depending on cable length and
cable quality) can be connected in a row without DMX signal
repeater.

Operation

> 1 s

1

2 3 4 5 … …

Setting

1 2 3 4

DMXAddress

1 2 3 4 5

LED output 2
LED output 3

DMX

Setting the DMX addresses

To be able to individually control the three LED outputs in a
DMX network, the dimmer is assigned three consecutive DMX
addresses (default setting: 1, 2 and 3), depending on the
particular application. Follow the operating instructions of the
control unit.

The DMX address for LED output 1 (= DMX start address)
can be set manually (default setting = 1). The following DMX
addresses are automatically assigned to LED outputs 2 and 3
(default setting: 2 and 3). Proceed as follows to set a different
DMX start address:

Note: The DMX start address can be set up globally for multiple
devices by connecting several OT DMX 3x350 DIM LI to the
same DMX network and performing the following procedure.

Connect the dimmer to the control unit and switch on both.



Set all DMX channel values to 0 (e.g. by using the sliders at



the DMX mixing desk).

Press pushbutton (C) for at least 1 s. The “DMX” LED



ashes. The dimmer starts to listen and waits for a DMX
conguration data frame (there is no timeout). If necessary,
press pushbutton (C) for less than 1 s to abort listening
mode.

Set one DMX channel (e.g. channel 3) to a value greater



than zero. The DMX start address associated to LED output
1 will be set to 3. The consecutive DMX addresses (chan­nels 4 and 5) are automatically associated with LED outputs
2 and 3. The “DMX” LED stops ashing after the assignment
is made.

Reset the DMX start address to 1

Press pushbutton (C) for at least 1 s. The “DMX” LED



ashes.

Press pushbutton (C) again for at least 1 s. The “DMX” LED



goes out.

The DMX start address of the dimmer is reset to 1.

Appendix

Technical data

Operating voltage 10 … 24 V

Output current per channel 350 mA

Output load range per channel 0 … 8 W at 24 V

Max. power loss 2.22 W

– V

Max. voltage drop (V

Resolution 8 bits

DMX protocol DMX512-A standard

Max. line cross-section
(for connecting power supply and LED
outputs)

Input reverse polarity protection Yes

Output short circuit protection Yes

Operating temperature -20 °C … +50 °C

Protection type IP 20

Weight 0.040 kg

Dimensions (L x W x H) 118 x 30 x 21 mm

The CE requirements as per EN 55015, EN 61547 and
EN 61347 are fullled.

Conformity with the relevant EU directives is
conrmed by the CE symbol.

) 0.55 V

in

out

Page 2 of 2

DC

0.5 … 1.5 mm

DC

2