Specifications

CI-1 and CI-8 Communications Interface
1-6
Figure 1-7: CI-1 to Multiple ACUs
NOTE:
If the 20mA loop includes SE 818 or NexSentry ACUs, each must be powered on for any
communication with the host. Communication is not lost when an SE 808 is powered off.
MOUNTING
The CI-1 should be installed in an electrical equipment cabinet such as the NEMA Type 1 panel
enclosure. Often, it is convenient to mount the CI-1 in the same cabinet as the ACUs and power
module. Double-sided foam tape on the back of the case of the CI-1 permits mounting on most
surfaces. A cabinet should provide:
1. Wiring clearance of 6 in (15 cm) around the edges of each unit.
2. Service clearance of approximately 8 in (20 cm) at the front of each unit.