Omega Vehicle Security 1400 User Manual

Page of 273
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ChartScan User’s Manual
CSN/Relay Card Specifications
Number of Channels:
•  16 (2 groups of 8 channels)
Relay Contacts (Manufacturer’s Ratings):*
•  8 Amps, 125-250 VAC Resistive
•  5 Amps, 30 VDC Resistive
Card Contact Ratings:
•  8 Amps maximum on group commons
Contact-to-System Isolation:
•  500 Volts (AC or DC)
*Manufacturer’s ratings for the relays used on the CSN/Relay Card.
 Expansion Chassis, CSN/Exp (Option)
You can add up to 64 additional analog channels to ChartScan by using a CSN/Exp expansion chassis.  The
expansion chassis accepts the same types of signal conditioning cards as the ChartScan unit, and is powered and
controlled by the ChartScan unit.
Expansion channels are accessed in the same way as channels in the master ChartScan unit.  When the main unit
detects the presence of the expansion chassis (during its power-on sequence), the system makes the additional
channels available to the user.  The 
U8
 command is available to query ChartScan for the total number of channels in
the system.
Note:
Only one expansion chassis can be connected to a ChartScan unit.
Note:
The rear panel of the expansion chassis contains no controls, indicators, input or output connections.
Connecting the Expansion Chassis
A ribbon cable electronically connects the expansion chassis to the main unit.  No additional power or interface
cables are required.  A set of mounting blocks and machine screws is used to physically connect the expansion
chassis to ChartScan.  Perform the following steps to install an expansion chassis.
WARNING
WARNING
WARNING
WARNING
Before connecting an expansion chassis to ChartScan, power down ChartScan and
disconnect the unit from power.  In addition, power down and disconnect all devices from
the system.  Failure to do so could lead to personal injury or death.
CAUTION
CAUTION
CAUTION
CAUTION
Use approved ESD precautions, including static-free work area and grounded wrist strap,
when handling circuit boards and electronic components.  Failure to do so could cause
equipment damage due to electrostatic discharge.
Note:  Only one expansion chassis can be connected to a ChartScan unit
1.  Ensure the ChartScan is not connected to any power source.
2.  Remove two upper side screws (near front of unit, and on side of unit) and slide top cover plate free of ChartScan.
Note that this plate will be reused as the cover plate for the expansion chassis.
3.  Using machine screws (A) provided, install two mounting blocks to the inner sides of the ChartScan unit, as
indicated by the following figure.