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CEM3 User Manual
Network Setup for Redundant Tracking Racks
The Redundant Tracking option is only available for ESR and FDX systems.
In a redundant tracking system, each processor has a separate network connection to which a separate
IP address may be assigned. When working in a redundant tracking system CEM3 will prompt you to
select the processor (A or B) for which you want to change the IP settings.
Working with Net3 Conductor Over FTP
CEM3 supports automatic or manual backup of the dimmer rack configuration to a server on an
Ethernet network using the FTP (File Transfer Protocol) standard. See
. By default, CEM3 is configured to interact with Net3 Conductor.
Before you can save to Conductor, you must set up the server from the CEM3 face panel.
To set up a Net3 Conductor server from CEM3:
1:
Navigate to [Setup]>File Operations>Setup Server.
2:
Press [Enter] to change Enabled to Yes.
3:
Specify the IP address of the Net3 Conductor.
4:
Specify the file name in Filename.
5:
Set the AutoSave option:
• Yes: Every time a change is applied to the configuration, it will be saved to the server.
• No: You must manually save configuration changes to the server.
Upgrades and CFG Path display the upgrade file path and configuration path where files will be stored
on Conductor.
Contact ETC Technical Services for assistance with configuring an FTP Server for use with CEM3.
Setting Rack DIP Switches and Termination
On the CEM3 backplane, located in the rack behind the CEM3 control module, there is a small bank of
8 DIP switches. These switches were set when your system was commissioned by an ETC technician to
match the specific size, features, and desired behavior of your dimmer rack. Generally, you will not
need to alter these settings after commissioning. However, in the event that you must replace your
CEM3 control module or backplane, you will need to ensure these settings match the previous
controller.
Use this section to determine the required settings for your dimmer rack. There is also a label on the
underside of the CEM3 that explains the function of each switch.
When setting the DIP switches, you may also need to check the DMX A and DMX B termination
settings for the rack. See the backplane label to determine the appropriate position of the termination
switch.
WARNING:
To avoid the possibility of electric shock, power must be turned OFF when you
perform this procedure. Before removing dimmer or control modules, de-
energize main feed to dimmer rack and follow appropriate Lockout/Tagout
procedures as described in NFPA Standard 70E. It is important to note that
electrical equipment such as dimmer racks can present an arc flash safety
hazard if improperly serviced. This is due to available large short circuit
currents on the feeders of the equipment. Any work on energized equipment
must comply with OSHA Electrical Safe Working Practices.
