Installation Sheet

RDM-FDB Single Channel Lutron FDB Ballast Dimmer 1920 W

The RDM-FDB Single 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-FDB module's 120, 240, and 277 VAC ratings are CE, UL, and C-UL approved.

Mounting points

Line in (hot)

Relay Switched out Ballast A Dimmed out

Positive air

gap relay

Fuse

Connecting the RDM-FDB to the AMX Lighting Master

Pin 4 (GND)

Pin 3 (RLY)

Pin 2 (DIM)

Pin 1 (+12 V)

RDM-FDB 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).

FIG. 2 RDM-FDB connections

Lighting Appplication Drawing

Low-voltage control wiring: 4-pin connector to AMX Lighting master controller

FIG. 1 RDM-FDB

RDM-FDB 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: .72 lbs. (0.327 kg)

•BTU/hr: 5

•Control current: 85 mA @ 12 VDC

•For use with FDB ballasts

Caution: Pre-Installation Notes

All neutrals are
common to the
Neutral block in the
enclosure. Provide
a separate neutral
for each load.	Neutral

Line in (HOT)

Circuit breaker panel

FIG. 3 RDM-FDB wiring configuration

Neutral

Florescent

Ballast

BallastBALLAST

Switched

Dimmed

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 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.