270
saia-pcd.com
PCD3
Compact
PCD1
PCD2
PCD3
•
•
•
•
(•)
•
•
•
•
•
•
Sample Project
Planning guide
2.
Definition of the device family
System selection
Device families PCD1 / PCD2 and PCD3 meet
the specification requirements for basic
communications interfaces.
Device families PCD2 and PCD3 meet the
requirements for modularity and expand-
ability.
The PCD3 family is chosen based on its
direct manual/override function.
For further selection criteria, see steps 3
and 4.
Maximum PLC flexibility
Sustainable automation solutions require maximum flexibility in
terms of expansion and function. The greater the requirement for
flexibility and expandability, the more emphasis should be placed
on open, modular systems. The basic“USB / Ethernet”communica-
tion interfaces for programming and data exchange are the basis for
sustained system usability.
Mounting in control cabinet
Modular systems are generally used when
mounting is required in closed electrical
control cabinets. The“flat”or“cassette”system
design does not differ in function, but may
affect space availability in the cabinet.
Saia PCD®
devices as user-programmable instrumentation, control and automation (ICA) devices with a flat, compact or cassette-type
design. Modular and expandable range of devices with sufficient reserves to allow the expansion of communications for the device
family.
Mounting
location
Modularity
Manual
operation
Expandability
Design
Switch cabinet
Compact
Modular
Flat
up to 1024 DP
up to 50 DP
up to 102 DP
NO
NO
NO
Cassettes
up to 1024 DP
YES
D
evice
family
Requirement arising from the specifications
Specifications
Selection criteria
Description:
Two-stage partial air conditioning system with plate
heat exchanger, air heater and air cooler.
Ventilation with manual/override function.
A switch cabinet should be included to install electri-
cal and automation technology.
Controls:
Flexible, modular and expandable controls
Interfaces:
Basic interfaces – Ethernet / USB Energy
measurement M-Bus; option to expand
Expansion
min. 20% expansion reserve
reserve:
Data:
Recording/storage of operational data
System families
Ethernet/USB
Modularity
Expandability
Manual operation
Meets the
requirement for
basic interfaces
and reduced ex-
pandability. No
manual/over-
ride function
Similar to the
PCD3 family
with reduced
expandabil-
ity. No manual/
override func-
tion
Meets the
requirement for
basic interfaces
and expandabil-
ity. No manual/
override func-
tion
Meets the
requirements
for basic com-
munications,
expandability
and manual/
override func-
tion
C
ompact
M
odular
Data memory
In-/outputs
Communication
Mounting location
Manual operation
Expandability
Modularity
Project: Control and fault
reporting system Switzerland
LSS-CH
PLC automation devices
specifications
tionen Not-
bedie-
nung
Bedien-
Funktionen
nge
AE
Grafik/Anlagenbild
DynamischeEinblendung
Ereignis-Anweisung
Nachricht anexterneStelle
Messwert aktiv
Messwert passiv
Schalten/Stellen
Anzeigen
8 9 1 2 n1 n2 n3 n4
1 5 1 1
1
1
2
1
3 ? ?
1 1
1
2
1
1 1 1
2 3
9 3 3
1 1
1
2
1
2
1
2
1 2
6 1 1
1 2
6 1 1
1
2
1
2
1 1
2 3
9 3 3
1
3 ? ?
1
2
0 6 10 11 0 62 13 10
