AMX RDM-ZC User Manual

Installation Sheet

RDM-ZC Zero Cross Module

2400 W

The RDM-ZC Zero Cross Module is a 2400 W zero-cross relay built for long
term, reliable switching of electronic fluorescent ballasts, electronic trans­formers and incandescent lamps. It is designed for use with the RDA series
of enclosures, in an AMX Lighting™ modular digital dimming system. The
RDM-ZC module's 120, 240, and 277 VAC ratings are CE, UL, and C-UL
approved.

Mounting points

Line in (hot)
Load out

Zero cross
relay

High-voltage
connections

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

• This module may require extra power from the AXlink connection or an
external power supply connected to the control card.

Connecting the RDM-ZC to the AMX Lighting Master

Pin 4 (GND)
Pin 3 (RLY)

Pin 2 (DIM)

Pin 1 (+12 V)

RDM-ZC 4-pin module connector

3 (-)

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-ZC connections

Lighting Application Drawing

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

Neutral

Line in (HOT)

Load

Zone 1

Incandescent track

lighting

FIG. 1 RDM-ZC

RDM-ZC UL and C-UL Ratings

• 120-277 VAC, 50/60 Hz, 2400 W

• 240/277 VAC, 50/60 Hz, 2400 W

Suggested Switched Loads

• Incandescent

• Electronic transformers

• HID ballast

• Electronic and magnetic ballast

Specifications

• Dimensions (HW): 10.00" x 2.75" (25.40 cm x 6.99 cm)

• Non-phase dependant

• Use wires rated at 75°C (167°F)

• Torque terminals to 7 in-lbs. (0.8 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: 150

• Control current: 45 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.

• Test loads for shorts before connecting.

• 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.

Circuit breaker
panel

FIG. 3 RDM-ZC wiring configuration

Fluorescent Ballast

BALLAST

BALLAST

Neutral

Load

Neutral

Load

Neon lights

(cold-cathode, on/off)

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).

The AMX logo is a trademark of AMX Corporation. AMX Cor poration reserves the right t o alter specifications without notice at any time.

3000 research drive, richardson, TX 75082 USA • 469.624.8000 • 800.2 22.0193 • fax [phone] • technical support 800.932.6993

043-019-2213 8/01 ©2001 AMX Corporation. All rights re served.