Lightronics RE121D-DP User Manual

Rack Mount Dimmer

• 12 Channels

• 1200W per Channel

Rack Mount Dimmer

RE121

• 10 Amp Fast Acting Fuses

• Dim/Relay Mode per 6 Channel groups

• 120/240V 60 Amp

• LMX-128 or DMX-512 Protocol

• UL-508 Compliant

• Optional Circuit Breakers

The RE121 is a 12 channel rack mount dimmer with a capacity of 1,200 watts per channel giving a total of 14,400 watts. It is
suitable for church, stage, theater, school, night club, live performances and other event and artistic applications.

The RE121 is controlled by a lighting control console. The unit uses the LMX-128 or DMX-512 control protocol. Channels A - F
and/or channels G - L may be switched to operate in “relay” mode. In relay mode, channels may be switched only to either to
full on or full off depending on fader position.

Control Output Connection Options: Duplex outlet panel with 2 connections per channel, External terminal strip (includes
knockout cover), Stagepin panel with 1 connection per channel, Patchbay panel with 4 powerlock connections per channel
Socapex connector panel (wiring per customer selection)

SPECIFICATIONS

Channels/Capacity: 12 @ 1200 Watts each

Power Input: 2 HOTS of 120VAC Single/Three
Phase 60 Amps per Hot Input
Under Full Load

Power Connection: Terminal Block

Overload Protection: 10 Amp Fast Acting Circuit
Breakers

System Addressability: 512/128 Channels
(DMX/LMX)

Cooling: Internal Fan Cooled Heatsink

Filtering: 350 Microseconds Minimum
Rise Time

Minimum Load: 15 Watts

Control Sources: DMX-512 (RE-121D)
LMX-128 (RE-121L)

Temperature Rise: 34 Degrees F at Full Load

Response Time: 8.33 Milliseconds

Efciency:  97%

Size: 19”W x 3.5”H x 13”D

Weight: 26 Pounds

509 Central Dr STE 101, Virginia Beach, VA 23454 Tel: [phone]

Fax: [phone] Visit us online at www.lightronics.com (130326)

EXTERNAL TERMINAL STRIP PANEL (includes knockout cover)

CONTROL IN

CONTROL OUT

CHANNEL OUTPUT

CONNECTIONS

NEUTRALS

GROUND

1 2

3

4

5

6 7 8

9 10

11 12

INPUT
POWER
ACCESS

STAGE PIN PANEL

CONTROL IN

CONTROL OUT

1 2

3

4

5 6

7

8 9 10

11 12

CHANNEL OUTPUT CONNECTIONS

INPUT
POWER
ACCESS

DUPLEX OUTLET PANEL

CONTROL IN

CONTROL OUT

CHANNEL OUTPUT CONNECTIONS

1 2

3

4

5

6

7

8 9 10

11

12

INPUT

POWER
ACCESS

PATCH BAY PANEL

CONTROL IN

CONTROL OUT

NEUTRALS

1

2

3

4

5 6

7

8

9

10 11

12

GROUND

CHANNEL OUTPUT TERMINALS

INPUT

POWER

ACCESS

SOCAPEX CONNECTOR PANEL

CONTROL IN

CONTROL OUT

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

OUTPUT CHANNELS CONNECTORS (19 pin)

INPUT

POWER

ACCESS

Rack Mount Dimmer

Architect & Engineer’s Specications

The dimming system shall have 12 circuits with
a load capacity of 1200 Watts per circuit. Each
circuit is protected by a 10 Amp fast acting
magnetic circuit breaker or a 10 Amp fuse. An

allowanceof200%overheadcapacityis

employed in the circuit design. The dimming
system shall have a rise time of not less than
350 microseconds. Programming setup and
memory attributes is via front panel dip
switches. A user may program the system
setup, dimmer attributes of Dim or Relay. LED
indicators display individual channel levels,
signal presence, and input power status. The
dimming system uses the USITT standard
DMX-512 protocol in the “D” version and
LMX-128 protocol in the “L” version for direct
control of the dimming circuits.

Power requirements of the dimming system shall
be 2 hots of 120VAC Single/Three phase service.
Capacity shall be 60 Amps per leg. DMX-512 is
connected through a standard 5 pin XLR
connector. LMX-128 is connected through a
standard 3 pin XLR connector. A variety of
electrical output connections are available
including Stage Pin, Socapex, Patch Bay
(Powerlock), Duplex (Edison) and External
Terminal Strip. Mounting of the dimming
system shall be on standard 19” EIA rack mount.

Dimensions are 3.5”H x 19”W x 13”D and the
weight shall be 28 lbs.

The dimming system shall be a
Lightronics RE121.

To view and/or download the Owner’s Manual
click here: www.lightronics.com/manuals/

re121m.pdf

509 Central Dr STE 101, Virginia Beach, VA 23454 Tel: [phone]

Fax: [phone] Visit us online at www.lightronics.com (130326)