AMX RDM-MDM Assembly instructions

Installation Sheet
RDM-MDM Multimode Dimmer Module
2400 W
The RDM-MDM Multimode Dimmer Module is ideally used in situations
where the load is not specified or the load may change at the last moment.
This unit is a unique combination 2400 W Incandescent dimmer,
2400 W Switch, or 2400 W FDB fluorescent dimmer. It consists of a heavy
duty SSR construction for dimming and a heavy duty positive air gap relay
for switching. The RDM-MDM module's 120 and 240-277 VAC ratings are
CE, UL, and C-UL approved.
RDM-MDM UL and C-UL Ratings:
• 120 VAC, 50/60 Hz, 2400 W per circuit
• 240/277 VAC, 50/60 Hz, 2400 W per circuit
Specifications:
• Dimensions (HW): 10.00" x 2.75" (25.40 cm x 6.99 cm)
• Phase dependant dimming
• 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: 4.5 lbs (2.04 kg)
• BTU/hr: 300
• Control current: 190 mA @ 12 VDC
Suggested Loads:
Caution Pre-Installation Notes:
• All Class 1 wiring must be connected to proper terminals.
• All control wiring must be connected to proper terminals.
• 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.
• For indoor use only.
• AC lighting loads only.
• This module may require extra power from the AXlink connection or an
external power supply connected to the control card.
Connecting RDM Series Modules to the RDM-MDM:
FIG. 1 RDM-MDM
• Incandescent • Two-wire, phase-controlled ballast
• Low-voltage • Three-wire, phase-controlled ballast
• Neon, cold-cathode • Switched fluorescent ballast
Line
Neutral
Dimmed
Switched
350 µS Choke
Mechanical Relay
2400 W power device
Low-voltage control
wiring: four-pin connector
to AMX Lighting master
controller
Mounting points
High-voltage
connections
FIG. 2 Connecting RDM series modules to the RDM-MDM
Pin 4 (GND)
Pin 3 (RLY)
Pin 2 (DIM)
Pin 1 (+12 V)
RDM-MDM 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).

AMX Corporation reserves the right to alter specifications without notice at any time.
For full warranty information, refer to the AMX Instruction Manual(s) associated with your Product(s).
043-019-2299 10/01 ©2001 AMX Corporation. All rights reserved.
The AMX logo is a trademark of AMX Corporation. AMX Corporation reserves the right to alter specifications without notice at any time.
3000 research drive, richardson, TX 75082 USA • 469.624.8000 • 800.222.0193 • fax [phone] • technical support 800.932.6993
Lighting Application Drawings
FIG. 3 Method A
Method A
120 VAC, 1Ø /
Switch configuration
FIG. 4 Method B
FIG. 5 Method C
Method B
120 VAC, 1Ø /
Dimming configuration
Method C
120 VAC, 1Ø /
Three-wire (FDB) configuration