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Dual Tracking Remote Select Switch connection (Optional)
If desired, a remote switch can be wired to the CEM3 backplane to control CEM3 selection in racks
equipped with ETC's Redundant Tracking CEM3 option.
Note:
Step 1:
Step 2:
Note:
Step 3:
+24Vdc
Header at the top of the
backplane PCB
Control and Data Connections
You must supply your own enclosed single-pole double-throw center-off switch to
install a remote select switch. You may optionally use an external 24V DC power
supply, or use the power supply from the rack backplane.
2
Pull 1.5 mm
wires between your remote switch and the CEM3 backplane through the
data cable conduit. See
installation details. For systems with no requirement for remote tracking status
indication three wires are required, otherwise four wires will be required.
Connect the remote switch wires to the J12 connector on the rear of the backplane.
The J12 connector is a removable plug header and is easier to wire when it is
disconnected from the backplane in an installed rack.
Wire the remote switch and indicator to the J12 connector according to Figure 9.
An indicator lamp
50mA 24Vdc max for
internal power supply
COM
Figure 9: J12 Dual Tracking remote connector wiring
Running DMX Cable to Racks
Position B - Secondary
Position A - Primary
page 23
on
for data conduit
1
2
3
4
Orange remote tracking header.
Pin 1 is the pin closest to the phase
bars (left side of the rack as you look
in)
J12
27
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