Saia-Burgess
Controls Ltd.
Hardware Manual for the PCD3 Series│Document 26/789; Version E 5│31.01.2005
Hardware
PCD3.W3x0
5-45
5
Digital-/analogue values
Input signals and type
Digital values
PCD3.W300/W340 PCD3.W310/W340 PCD3.W340/50/60 Classic xx7
Simatic
+ 10.0V
+ 20 mA
Calculate the appro-
priate values with the
formulae at the end
of this section
4095
4095
27684
+ 5.0V
+ 10 mA
2047
2047
13824
0V
0 mA
0
0
0
Layout (housing opened,
instruction see section 5.1.5
)
Jumper positions for working mode selection:
PCD3.W340 only, on the other module types the working modes are fixed
All inputs set for temperature (position T) must be wired. All unused inputs (with the
W340) must be adjusted to current range ‘C’ or voltage range ‘V’.
Changing the jumpers
Throughout the circuit board there are components which are sensitive to
electrostatic discharges. Explanation will be found in the
Appendix, “Icons” section
.
Connection concept for voltage and current inputs
The voltage and current input signals are connected directly to the 10-pole screw
terminal (E0 … E7). To minimize the amount of noise coupled into the module via the
transmission lines, connection should be made according to the principle explained
below.
The following connection diagram shows a typical wiring layout for:
●
voltage inputs with the PCD3.W300 and ...W340 modules or
●
current inputs with the PCD3.W310 and ...W340 modules
T
V/4
V
C
T
V/4
V
C
T
V/4
V
C
T
V/4
V
C
Position 'T':
Pt/Ni 1000
Position 'V/4': (0 .. +2.5V)
Position 'V':
0 .. +10V
Position 'C':
0 .. 20 mA
E7 E6
E5 E4
E3
E2
E1 E0
T
V/4
V
C
T
V/4
V
C
T
V/4
V
C
T
V/4
V
C
T
V/4
V
C
Bus connector
Jumper for working
Mode selection
(PCD3.W340 only)
