SBC PCD3 Series - Planning PCD3 Applications

Saia-Burgess Controls AG
Hardware manual for PCD3 series │ Document 26-789 ENG19│ 2018-06-29
Planning an application
Guidance
2-4
2
2.4 Planning an application
The following aspects should be considered when planning PCD3 applica-
tions:
- The internal load current taken by the I/O modules from the +5V and +V supply
mustnotexceedthemaximumsupplycurrentspeciedfortheCPUs,RIOsor
LIOs (PCD3.C200)
- TheCPUorRIOtypespeciesthemaximumnumberofmodulecarriersand
modules
- AftervePCD3.C100modulecarriers,useaPCD3.C200baseunitasI/Obus
amplier.
- Inkeepingwithleanautomation,itisrecommendedtoleavetherstslotinthe
CPU basic module free for any subsequent expansions. Both simple I/O mod-
ules and communication modules can be used in this slot.
- The total length of the I/O bus is limited to 15 LIO modules by technical factors;
the shorter, the better.
The PCD3.C200 is used to extend the I/O bus or for the internal power sup-
ply (+5V and +V (24V)) to a module segment.
Please note the following rules:
- DonotusemorethansixPCD3.C200sinasingleconguration,orthetime
delay will exceed the I/O access time.
- AmaximumofvecablesPCD3.K106/.K116maybeused.
100
Saia PCD3.C
100
Saia PCD3.C
200
Saia PCD3.C
6860
ETH 2.1 ETH 2.2
Ethernet 2
USB
Saia PCD3.M
100
Saia PCD3.C
100
Saia PCD3.C
Extension plug
PCD3.K010
Extension cable
PCD3.K106/PCD3.K116
Series 0
Series 1
- Insert a PCD3.C200 after each cable (at the start of a row).
Exception:Inasmallcongurationwithnomorethan3PCD3.C1xxs,these
can be supplied from the PCD3.Mxxxx. A PCD3.C200 is not required.