10
Andover Controls
Power-CPU Connections
The Continuum NetController CPU module includes a connector on the upper right
side of its case for further distribution of the 24 VDC input power and special I/O
communications signals to all I/O modules. Continuum I/O modules use these signals
for power and communications as well.
The power-I/O connector is a five pin male assembly that is designed to easily insert
directly into the left side (input) connector of any I/O module. The signals within that
connector are as follows:
PIN Function
5 +24 VDC
4 24 VDC Return
3 Ground
2 Comm B
1 Comm A
The system power supply generates a +24 VDC source for all modules in the system.
This power source is received through the input power connector on the left side of
the CPU module and sent through to pins 4 and 5 of this connector. Pin 3 (Ground) is
intended as a signal ground connection.
Communications between the CPU and I/O modules is through a two-signal serial
interface that can be internally configured as either RS 485 or Echelon LON FTT-10.
Pins 1 and 2 (Comm B and Comm A) provide the electrical connection for this
interface.
5
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