Hardware Manual

Hardware Manual PCD 1 / PCD 2 Series│Document 26 / 737│Edition EN 15│2008-07-

Saia-Burgess Controls AG

Planning an application with PCD1/2/3 components

Guidance

2

 Check that the max. supply current for the CPU is sufficient; it generally should

be. In extreme cases, switch to PCD3 expansion units.

^ Estimate consumption from the 24^ V supply. Use estimated values from the

section on “Hardware”.

These estimated values can be found in section 3.8.5, “Power consumption of

PCD2/PCD3 input/output modules”.

Note that in most applications the outputs place the heaviest load on the 24 V sup-

ply. For 16 outputs with a load current of 0.5 A each, the loading will be 8 A with all

outputs connected.