AMX Zero Cross Module RDM-ZC50 Installation Sheet

The RDM-ZC50 Zero Cross Module is a 6000 W solid-state zero-cross
relay built for extra large loads. It is designed for use with the RDA series of
enclosures, in an AMX Lighting™ modular digital dimming system. The
RDM-ZC50 module's 120 VAC and 277 VAC ratings are CE, UL, and C-UL
approved.
Mounting points
FIG. 1 RDM-ZC50

RDM-ZC50 UL and C-UL Ratings

120-277 VAC, 6000 W

Suggested Switched Loads

• Incandescent
• Electronic transformers
• HID ballast
• Fluorescent ballast

Specifications

• Dimensions (HW): 10.00" x 2.75" (25.40 cm x 6.99 cm)
• Non-phase dependant
• Use 75°C (167°F) copper conductors only
• Torque terminals to 16 in-lbs. (7.25 kg-m)
• Max. wire size: 6 AWG; 14 AWG min.
• Wire stripping length: 0.35" (9 mm)
• Weight: 1.0 lb. (0.45 kg)
• BTU/hr: 400
• 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.
• Run all low-voltage and control wires away from heat producing parts
of the dimmer.
• Each dimming circuit must have a separate neutral connection.
• All electrical ratings are for continuous duty.
• AC lighting loads only.
• For indoor use only.
• This module may require extra power from the AXlink connection or an
external power supply connected to the control card.
Line in (hot)
High-voltage
connections
Load out
Zero cross relay
Low-voltage control
wiring: 4-pin controller
to AMX Lighting master
controller
Installation Sheet
RDM-ZC50 Zero Cross Module

Connecting the RDM-ZC50 to the AMX Lighting Master

Pin 4 (GND)
Pin 3 (RLY)
Pin 2 (DIM)
Pin 1 (+12 V)
RDM-ZC50 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-ZC50 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)
Circuit breaker
panel
FIG. 3 RDM-ZC50 wiring configuration
6000 W
Load
Fluorescent Lighting
Ballast
Load
Neutral
Neutral
Load
Neon lights
(cold-cathode, on/off)