AMX Work Light RDM 3FDB User Manual

Installation Sheet  
RDM-3FDB Triple Channel Lutron FDB Ballast Dimmer  
1900 W  
The RDM-3FDB Triple Channel Ballast Dimmer is a 1920 W positive air gap  
relay and dimmer, built for strength and for reliable switching/dimming of  
Lutron FDB ballasts. It is designed for use with the RDA series of enclo-  
sures, in an AMX Lighting™ modular digital dimming system. The RDM-  
3FDB module's 120, 240, and 277 VAC ratings are CE, UL, and C-UL  
approved.  
This module may require extra power from the AXlink connection or an  
external power supply connected to the control card.  
Connecting the RDM-3FDB to the AMX Lighting Master  
Pin 3 (RLY)  
Pin 2 (DIM)  
Pin 1 (+12 V)  
Mounting  
points  
RDM-3FDB 4-pin module connector  
3 (-)  
Relay  
2 (AC)  
Line in (hot)  
Ballast A  
1 (+)  
Switched out  
Dimmed out  
4-pin plug from RDM series module  
Note: The 4-pin plugs from the module connector  
Relay  
to the 4-pin connector on the master (black plug cover facing up).  
Line in (hot)  
Ballast B  
Switched out  
Dimmed out  
FIG. 2 RDM-3FDB connections  
Lighting Application Drawing  
Relay  
All neutrals are  
common to the  
Neutral block in the  
enclosure. Provide a  
separate neutral for  
Line in (hot)  
Ballast C  
Switched out  
Dimmed out  
Neutral  
Neutral  
each load.  
Fuse  
Positive air  
gap relay  
Switched  
Dimmed  
Line in (HOT)  
Ballast  
Florescent  
Ballast  
Low-voltage control wiring:  
4-pin connector to AMX  
Lighting master controller  
Circuit breaker  
panel  
The fuses protect the dimming  
circuit from a low impedance  
load.  
The fuse would blow if it  
were incorrectly wired  
Catastrophic ballast failure  
Reversing switched and  
dimmed circuits  
FIG. 1 RDM-3FDB  
RDM-3FDB UL and C-UL Ratings  
Reversing dimmed and  
line circuits.  
120 VAC, 1920 W  
240/277 VAC, 1920 W  
The dimmed output must be  
connected to a high impedance  
load.  
Suggested Dimmed Loads  
Most 3-wire dimmable fluorescent ballasts  
©
®
FIG. 3 RDM-3FDB wiring configuration  
Lutron Hi-Lume FDB Ballasts  
®
Lutron Eco-10 Dimmable Ballasts  
Specifications  
Dimensions (HW): 10.0" x 2.75" (25.4 cm x 6.99 cm)  
Dimmed output protected by a 250 mA GMA 5 x 20 mm fuse  
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)  
Weight: 1.57 lbs. (0.712 kg)  
BTU/hr: 5  
Control current: 85 mA @ 12 VDC  
For use with FDB ballasts  
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 field installed copper conductors.  
All electrical ratings are for continuous duty.  
For indoor use only.  
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