CHARM Column Extenders and cable specifications

Installation notes

The CHARM Column Extenders are used to extend the power and communications busses when CHARM Baseplates in a 96 CHARM system are installed on multiple DIN rails.
The bottom column extender can be connected to a CIOC carrier or to a baseplate depending upon the physical location of the carrier and the baseplate. For example, if the CIOC carrier only is installed on a DIN rail and the baseplates are installed on another DIN rail, the bottom column extender would be connected to the CIOC carrier and either another bottom extender or top extender could be connected to a baseplate on the other DIN rail. Refer to the second image in this topic.
The top column extender can be connected to baseplates only.
To connect the cables between the extenders, connect primary to primary and secondary to secondary.
Three cable lengths are available for use with the extenders:
- 0.5 meters (1.64 feet)
- 1.0 meters (3.28 feet)
- 2.0 meters (6.56 feet)
A maximum of four extender pairs can be used and only one extender pair can exceed 0.5 meters (1.64 feet).

Table: CHARM Column Extenders specifications
Item	Specification
Total CHARM Bus power	+6.3 VDC ± 3% at 4 A maximum
Total +24 VDC power	+24 VDC ± 10% at 10 A maximum

Figure: CHARM Column Extenders

Figure: Example installations using CHARM Column Extenders