Cumberland EDGE 074-11793, Wiring Diagram

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3
Basic Connections
Topics Covered in this Chapter
▪ Equipment Wiring Rules for Backup and Failsafe Operation
▪ Preparing the Enclosures for Installation
▪ Mounting the Enclosures
▪ Installing the plug-in modules
▪ Installing the Plug-in Relays
▪ Installing the EDGE Variable Output
▪ Installing the EDGE 4IN-2V-8DO Before Wiring
▪ DC Network and Power Supply Redundancy
▪ Connecting a Module to the Communication Network
▪ Connecting the Alarm Relay
▪ Connecting an Analog Input
▪ Connecting a Variable 0-10 VDC Output
▪ Grounding
▪ Connecting the Power Supply
▪ Connecting Relay Outputs
▪ Connecting a Crydom Variable Output Modules (SSR)
▪ Connecting an EDGE Variable Output module (SSR)
▪ Connecting Discrete Outputs
▪ Connecting the Current Sensors of Discrete Outputs
Equipment Wiring Rules for Backup and Failsafe Operation
The EDGE system enters backup mode when communication is lost between the main controller and
Expansion Boxes. Once in backup mode, the plug-in modules take over operation of the equipment con-
nected to them. A plug-in module only operate the equipment wired to it, and not equipment on other
plug-in cards. When using the EDGE for backup or failsafe operations, there are certain rules you must
follow when wiring your equipment.
Wiring for backup operations requiring temperature, static pressure, or relative humidity measurements
can be done through the 8I/4V/6R,16I/6R, 4I/8R and 4I/8REL F modules.
To ensure proper operation of equipment in the event of a main controller malfunction, the following
backup operations (in priority order) are recommended.
• Minimum ventilation stage fan outputs
• Minimum ventilation stage inlets
• Intermediate temperature control stage fan outputs (stage 2-3)
• Heater
• Other inlets
• Other fans
891–00516 EDGE Wiring Diagram 47