AMX Network Card RDM MDM User Manual

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.  
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.  
Mounting points  
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.  
Neutral  
Line  
High-voltage  
connections  
Dimmed  
Switched  
Connecting RDM Series Modules to the RDM-MDM:  
Pin 4 (GND)  
Pin 3 (RLY)  
350 µS Choke  
Pin 2 (DIM)  
Pin 1 (+12 V)  
RDM-MDM four-pin module connector  
Mechanical Relay  
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).  
2400 W power device  
FIG. 2 Connecting RDM series modules to the RDM-MDM  
Low-voltage control  
wiring: four-pin connector  
to AMX Lighting master  
controller  
FIG. 1 RDM-MDM  
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:  
• Incandescent  
Two-wire, phase-controlled ballast  
• Three-wire, phase-controlled ballast  
• Switched fluorescent ballast  
• Low-voltage  
• Neon, cold-cathode  
 

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