Crystal Vision
The CoCo Controller-48V
CoCo104 User Manual R2.0
29
26/09/05
Note:
The second serial port on the CoCo104 is used for Controller communications allowing front
panel and Statesman control at the same time as Controller access.
Connecting supply cables
To connect the CoCo Controller-48V to a DC supply proceed as follows:
The 48Vdc range of Indigo controllers are designed to be able to run in both positive and
negative earth situations. This has been achieved by designing the PSU module to be
insensitive to supply polarity. The only precaution to be taken is that the fused line is
always the non-earth connection.
For a positive earth installation the supply –ve would be connected to the Red Fused inlet.
And the ve would be connected to the Black Non-Fused inlet. In this case the
Chassis connection would be connected to a ‘clean earth’ which would be of the +ve
polarity.
For a negative earth installation the ve would be connected to the Red Fused
inlet. And the supply -ve would be connected to the Black Non-Fused inlet. In this case
the Chassis connection would be connected to a ‘clean earth’ which would be of the -ve
polarity.
Note:
The fuse holder is part of the PSU module. Replace the fuse only with one of the same
type and rating. Refer to the maintenance section of the trouble shooting guide for more
information.
CoCo Controller-48V panel supply connector view
