a-2000 User Guide
a-2000
Page 21
Dimmer Cabinets with Digital Controls
Revision G November 2006
Step 4 - Relay Cabinet (OPTIONAL)
The optional relay cabinet is primarily intended for 277 Volt fluorescent dimming
ballast with a 0-10 VDC control signal. However the cabinet can accommodate
120V and 347V applications and may be used for any non dim load. They come
completely pre-wired and attached to the main a-2000 cabinet. The relay cabinet
can be configured with branch circuit breakers as shown in Figure 12. The relay
cabinet must be ordered attached to a either a 12 or 24 channel cabinet only at
the factory.
Figure 11 - Relay Cabinets Attached to a 24 Circuit a-2000 Cabinet (on
left) and a 12 Circuit cabinet (on the right)
Branch Breakers in the Relay Cabinet - See Figure 12:
To wire the relay cabinet, follow these simple steps:
1
Remove or open the door.
2
Run and land the power/feed wires to the relay Cabinet Feed Terminals
3
Run and land the load wires to the Load side of the relay terminal block
4
Run and land the neutral wires to the Neutral Terminal Block
5
Run and land the ground wire to the Ground Lug
No Branch Breakers in the Relay Cabinet -See Figure 13:
To wire the relay cabinet, follow these simple steps:
1
Remove or open the door.
2
From the external branch circuit breaker, run and land the power wires to
the Line side of the relay terminal block
3
Run and land the load wires to the Load side of the relay terminal block
4
Run and land the neutral wires to the individual Neutral Terminals
5
Run and land the ground wire to the Ground Lug