ETC Unison ERn Wall-mount Control Enclosure - Manual (Page 32)

28 Unison ® ERn Wall Mount Enclosure Installation Manual
Step 1: Remove modules from the ERn enclosure for RideThru Option board installation
access.
•
For an ERn2, remove only the bottom option module from the rack
enclosure.
• For an ERn4 with two Paradigm ACPs, remove the bottom option module
and the rack power Supply from the rack enclosure.
Step 2: Align the RideThru Option board to the mounting studs in the right corner of the
ERn enclosure (see graphic on the previous page).
•
Notice the mounting holes on the option board. Two are open ended slots
used to set the board in place and the remaining two standard mounting
holes are used to secure the board in place.
• Align the open ended slots to the studs located closest to the bottom of the
rack.
Step 3: Secure the board to the top two mounting pems with the screws provided.
Connect RideThru Option Wiring
The Unison RideThru Option board is provided with a wiring harness for connection to the
ERn enclosure right I/O board.
Step 1: Connect one end of the wiring harness to the two pin receptacle on the option
board.
Step 2: Connect the other end of the wiring harness to the two pin receptacle labeled
“RideThru / Batt” on the ERn enclosure right I/O board. When two RideThru
Option boards are installed (ERn4 only), the top RideThru Option wiring harness
terminates to the I/O board in the top and the bottom RideThru Option wiring
harness terminate to the I/O board in the bottom of the unit.
Step 3: Secure the wiring harness to the ERn enclosure using the cable tie and cable tie
mount provided in with the RideThru Option board. A loose or poorly routed
wiring harness could interfere with option module installation in the lower option
module slot. In the top module slot the wiring harness could interfere with the
rack power supply (ERn-PS).
2008
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