Hardware Manual for the PCD2.M5 Series│Document 26/856; Version EN 12│2014-07-24
Saia-Burgess Controls AG
Analogue input modules, electrically isolated
Input/output (I/O) modules
6-61
6
6.9.1 PCD2.W3x5, analogue inputs, electrically isolated, 7 channels,
12 bit resolution
Application
High-speed input modules for general use, electrically isolated from the CPU, with 7
channels, each with 12 bit resolution. Different variants for voltage 0..10 V, -10 V...+10
V and current 0..20 mA are available.
Module overview
resolution *)
PCD2.W305:
Voltage 0..10 V
2.5 mV
PCD2.W315:
Current 0...20 mA
5 μA
PCD2.W325:
Voltage -10..10 V
5 mV
*) Resolution = value of least significant bit(LSB)
Technical data
Input ranges:
see module overview
Galvanic separation:
500 V, electrical isolation of outputs to PCD,
channels themselves not separated
Resolution (digital representation): 12 bit (0 … 4095)
Measuring principle:
non-differential, single-ended
Input resistance:
W305:
13.5 kΩ / 0.1
%
W315:
120 Ω / 0.1
%
W325:
13.7 kΩ / 0.1
%
Accuracy at 25°C
± 0.15 %
Repeat accuracy:
± 0.05 %
Temperature error (0 …
+55
°C)
± 0.25 %
Conversion time A/D:
≤ 2 ms
Overvoltage protection:
W305:
± 40 V
DC
(permanent)
W325:
± 40 V
DC
(permanent)
Overcurrent protection:
W315:
± 35 mA (permanent)
EMC protection:
yes
Time constant of input filter:
typically 2.4 ms
Internal current consumption:
(from +5 V bus)
< 60 mA
Internal current consumption:
(from V+ bus)
0 mA
External current consumption:
0 mA
Terminals:
Pluggable 14-pole spring terminal block (4 405 5002 0),
for Ø up to 1.5 mm²,