AMX Dual Zero Cross Module RDM-2ZC Assembly instructions
Installation Sheet
RDM-2ZC Dual Zero Cross Module
2400 W
The RDM-2ZC Dual Zero Cross Module is a dual 2400 W zero-cross relay
built for long term, reliable switching of electronic fluorescent ballasts, elec-
tronic transformers and incandescent lamps. It is designed for use with the
RDA series of enclosures, in an AMX Lighting™ modular digital dimming
system. The module's 120, 240, and 277 VAC ratings are CE, UL, and C-
UL approved.
RDM-2ZC UL and C-UL Ratings
• 120-277 VAC, 2400 W
• 240/277 VAC, 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: 2.0 lbs. (0.91 kg)
• BTU/hr: 300
• Control current: 45 mA per relay (90 mA total) @ 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.
• This module may require extra power from the AXlink connection or an
external power supply connected to the control card.
Connecting the RDM-2ZC to the AMX Lighting Master
Lighting Application Drawing
FIG. 1 RDM-2ZC
Low-voltage control
wiring: 4-pin connector
to AMX Lighting master
controller
Zero cross relay A
Zero cross relay B
Line in (hot)
Load out
High-voltage
connections
Mounting
points
FIG. 2 RDM-2ZC connections
FIG. 3 RDM-2ZC wiring configuration
Pin 4 (GND)
Pin 3 (RLY)
Pin 2 (DIM)
Pin 1 (+12 V)
3 (-)
1 (+)
RDM-2ZC 4-pin module connector
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
Circuit breaker
panel
Neon lights
(cold-cathode, on/off)
Neutral
Load
All neutrals are common
to the Neutral block in the
enclosure. Provide a
separate neutral for
each load.
(B) Load
(B) Line in (HOT)
Load
Neutral
Fluorescent Ballast
(A) Line in (HOT)
(A) Load
Safety ground
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).
043-019-2201 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.
3000 research drive, richardson, TX 75082 USA • 469.624.8000 • 800.222.0193 • fax 469.624.7153 • technical support 800.932.6993
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