Heavy Duty DC Module RDM-HDC Manuals




Installation Sheet
RDM-HDC Heavy Duty DC Module
2400 W, 0-12 VDC
The RDM-HDC Heavy Duty DC Module is a heavy-duty 2400 W module for 
Caution: Pre-Installation Notes
dimming of fluorescent ballast loads. It uses a 0 to 12 VDC current sinking 

All Class 1 wiring must be connected to proper terminals.
or sourcing for use with all four-wire ballasts. It is designed for use with the  

All control wiring must be connected to proper terminals.
RDA series of enclosures, in an AMX Lighting™ modular digital dimming 

Disconnect power while installing or connecting the unit.
system. The module’s 120, 240, and 277 VAC ratings are CE, UL, and 

Keep top and bottom air vents clear at all times.
C-UL approved.  

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

Use field installed copper conductors.
Mounting
points

All electrical ratings are for continuous duty.

For indoor use only.

Test loads for shorts before connecting.

This module may require extra power from the AXlink connection or an 
external power supply connected to the control card.
Connecting the RDM-HDC to the AMX Lighting Master
Neutral
Pin 4 (GND)
High
Pin 3 (RLY)
voltage
Line in
Pin 2 (DIM)
- out (LV)
Pin 1 (+12 V)
Load
Low-voltage
+ out (LV)
RDM-HDC 4-pin module connector
GND
3 (-)
2 (DIM)
1 (+)
4-pin plug from 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).

Relay
FIG. 2  Connecting the RDM-HDC and AMX Lighting Master
Lighting Application Drawings
Florescent Ballast
Neutral
-
Line in (HOT)
+
 Ballast
 
Low-voltage control
wiring: 4-pin 
connector to AMX
 
RDM-HDC  
Load
Lighting master
Neutral
controller
LOAD LINE NEUT      CON   
Low-voltage wire rated
FIG. 1  RDM-HDC
to 300 V
RDM-HDC UL and C-UL Ratings
Circuit breaker
panel

120 VAC, 50/60 Hz, 2400 W

240/277 VAC, 50/60 Hz, 2400 W
FIG. 3  RDM-HDC application wiring

Control Out:  50 mA, 12 VDC
                          sourcing/sinking
Warning: Failure to ground the ballast may cause ballast 
Suggested Dimmed Loads
failure

Four-wire dimmable ballasts

All low-voltage DC controlled ballasts
Specifications

Dimensions (HW):  10" x 2.75" (25.4 cm x 6.99 cm)

Non-phase dependant

Use wires rated at 75°C (167°F)

Torque terminals to 20 in-lbs. (2.3 N/M)

Max. wire size:  10 AWG (4 mm²)

Wire stripping length: 0.28" (7 mm)

Weight: 1.3 lbs. (0.590 kg)

BTU/hr: 150

Control current: 150 mA @ 12 VDC

Document Outline



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