AMX RDM-2FDB DUAL FDB MODULE, 1,920 W (X2) Assembly instructions

Installation Sheet
RDM-2FDB Dual Channel Lutron FDB Ballast Dimmer
1920 W
The RDM-2FDB Dual 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 a AMX Lighting™ modular digital dimming system. The RDM-
2FDB module's 120, 240, and 277 VAC ratings are CE, UL, and C-UL
approved.
RDM-2FDB UL and C-UL Ratings
• 120 VAC, 1920 W
• 240/277 VAC, 1920 W
Suggested Dimmed Loads
• Most 3-wire dimmable fluorescent ballasts
• Lutron©Hi-Lume®FDB Ballasts
• Lutron Eco-10®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)
• Wire stripping length: 0.28" (7 mm)
• Weight: 1.5 lbs. (0.68 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.
• This module may require extra power from the AXlink connection or an
external power supply connected to the control card.
Connecting the RDM-2FDB to the AMX Lighting Master
Lighting Application Drawing
FIG. 1 RDM-2FDB
Relay
Line in (hot)
Switched out
Dimmed out
Fuse
Positive air
gap relay
Relay
Line in (hot)
Switched out
Dimmed out
Low-voltage control wiring:
4-pin connector to AMX
Lighting master controller
Mounting
points
Ballast A
Ballast B
FIG. 2 RDM-2FDB connections
FIG. 3 RDM-2FDB wiring configuration
Pin 3 (RLY)
Pin 2 (DIM)
Pin 1 (+12 V)
RDM-2FDB 4-pin module connector
3 (-)
2 (AC)
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).
BALLAST
Ballast
Circuit breaker
panel
The fuse protects 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
• Reversing dimmed and
line circuits.
The dimmed output must be
connected to a high impedance
load.
All neutrals are
common to the
Neutral block in the
enclosure. Provide
a separate neutral
for each load. Neutral
Line in (HOT)
Switched
Dimmed
Florescent
Ballast
Neutral

AMX Corporation reserves the right to alter specifications without notice at any time.
For full warranty information, refer to the AMX Instruction Manual(s) associated with your Product(s).
043-019-2484 8/01 ©2001 AMX Corporation. All rights reserved.
The AMX logo is a trademark of AMX Corporation. AMX Corporation reserves the right to alter specifications without notice at any time.
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