Installation Sheet
RDM-2DC Dual DC Dimmer Module
1920 W, 0-10 VDC (x2)
The RDM-2DC Dual DC Module is a 1920 W module used for the dimming
of fluorescent ballast loads. It uses a 0 to 10 VDC current sinking for use
with four-wire ballasts. It is designed for use with the RDA series of enclo-
sures, in an AMX Lighting™ modular digital dimming system. The module’s
120 and 277 VAC ratings are CE, UL, and C-UL approved.
RDM-2DC UL and C-UL Ratings
•
120 VAC, 50/60 Hz, 1920 W
•
277 VAC, 50/60 Hz, 1920 W
•
Control Out: 50 mA, 12 VDC sinking
Suggested Dimmed Loads
•
Four-wire dimmable ballasts, like Advance Transformer Mark VII™ or
the Energy Savings SuperDim™ series
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: 2.6 lbs. (1.180 kg)
•
BTU/hr: 150
•
Control current: 125 mA @ 12 VDC
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.
•
Use low-voltage wires with a 300 volt rating or greater.
•
Use field installed copper conductors.
•
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-2DC to the AMX Lighting Master
Lighting Application Drawings
Warning: Failure to ground the ballast may cause ballast
failure
FIG. 1 RDM-2DC
Low-voltage control
wiring: 4-pin
Relay
+ out (LV)
- out (LV)
Line in
Load out
High
Low-voltage
voltage
connector to AMX
Lighting master
controller
Mounting
points
+ out (LV)
- out (LV)
Line in
Load
High
Low
voltage
Relay
voltage
Fuses
out
FIG. 2 Connecting the RDM-2DC and AMX Lighting Master
FIG. 3 RDM-2DC application wiring
Pin 4 (GND)
Pin 3 (RLY)
Pin 2 (DIM)
Pin 1 (+12 V)
RDM-2DC 4-pin module connector
1 (+)
2 (DIM)
3 (-)
GND
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).
Ballast
Florescent
Neutral
Line in (HOT)
Load
Neutral
+
-
Circuit breaker
panel
Ballast
The fuses protect the dimming
circuit from a low impedance load.
•
The fuse will blow if it were
incorrectly wired
•
Catastrophic ballast failure
•
Reversing switched and
dimmed circuits
•
Reversing dimmed and
line circuits.
The dimmed output
must
be
connected to a high impedance
load.