IOM CRUZcontrol® Generation2 for NBC
P/N: 1118211
Revision Date: 05/31/2019
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Chapter 5: P
OWER
S
UPPLIES
A 24VDC power supply is needed to power the logic assemblies and the function modules. One power
T cable is prewired to the power supply. The power supply is available in 120VAC or 480VAC versions.
Power Supply Requirements
CRUZcontrol operates from a Class 2 power supply voltage of 24-28VDC. This limits the total number
of CRUZcontrol Logic Assemblies that can be connected to one power supply. There is a limit on the
maximum number of Logic Assemblies that can be in one continuous string, based on the cable length
and power requirement of Logic Assemblies. More than one string of Logic Assemblies can be
connected to a power supply, as long as the power supply output rating isn’t exceeded.
The Function Modules require 10mA of current at 24 VDC. This needs to be considered, as it will
reduce the total number of Logic Modules that can be connected to one Class 2 power supply to a
quantity less than stated in table 5.
Table 5: Maximum Number of Logic Modules per String
Number of Zones
Zone Length
Number of Zones
End Tap (95W, 24VDC)
4 ft. zones
27
End Tap (95W, 28VDC)
4 ft. zones
35
Center Tap (95W, 24VDC)
4 ft. zones
54
Center Tap (95W, 28VDC)
4 ft. zones
46
