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Installation Sheet

RDM-2INC Dual Incandescent Dimmer Module

2400 W (x2)

The RDM-2INC Dual Incandescent Dimming Module 2400 W (x2) incan-
descent dimmer is designed for use with the RDA series of enclosures, in 
an AMX Lighting™ modular digital dimming system. It can dim incandes-
cent lights, cold-cathode, neon and two-wire dimmable ballasts. The mod-
ule's 120, 240, and 277 VAC ratings are CE, UL, and C-UL approved. 

RDM-2INC UL and C-UL Ratings

120 VAC, 50/60 Hz, 2400 W

240/277 VAC, 50/60 Hz, 2400 W

Suggested Dimmed Loads

Incandescent

Low-voltage

Neon, cold-cathode

Two-wire, phase-controlled ballast

Specifications

Dimensions (HW): 10.0" x 2.75" (25.4 cm x 6.99 cm)

Phase dependant

Use wires rated at 75°C (167°F)

Torque terminals to 7 in-lbs. (0.8 N/M)

Max. wire size: 10 AWG (4 mm²)

Wire stripping length: 0.28" (7 mm)

Weight: 6.5 lbs. (2.948 kg)

BTU/hr: 600

Control current: 45 mA @ 12 VDC per dimmer, 90 mA total

Caution: Pre-Installation Notes

All Class 1 wiring must be connected to proper terminals.

All control wiring must be connected to proper temrnials.

Disconnect power while installing or connecting the unit.

Keep top and bottom air vents clear at all times.

Test loads for shorts before connecting.

Use low voltage wires with a 300 volt rating or greater.

Use field installed copper conductors.

Run all low-voltage and control wires away from heat producing parts 

of the dimmer.

Each dimming circuit must have a separate neutral connection. 

All electrical ratings are for continuous duty.

AC lighting loads only.

For indoor use only.

This module may require extra power from the AXlink connection or an 

external power supply connected to the control card.

Connecting the RDM-2INC to the AMX Lighting Master  

Lighting Application Drawing

FIG. 1  RDM-2INC

Low-voltage
control wiring:
4-pin connectors
to AMX Lighting
master controller

350 µS choke

Dual 20 A power device

Line out

Line in (hot)

High-voltage
connections

Mounting
points

FIG. 2  RDM-2INC connections

FIG. 3  RDM-2INC wiring application

Pin 4 (GND)
Pin 3 (RLY)
Pin 2 (DIM)
Pin 1 (+12 V)

RDM-2INC four-pin module connector

4-pin plug from a RDM series module

Note: The 4-pin plugs from the module
connector to the 4-pin connector on the
master (black plug cover facing up).

2 (-)

1 (+)

 

 

Light A Light B

(B) Load

(A) Load

(B) Line in (HOT)

(A) Line in (HOT)

(A) Neutral

(B) Neutral

Neutral

Load

Load

Neutral

Neon lights

(cold-cathode, on/off)

Two-wire dimmable

ballast

Circuit breaker

panel

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