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).
