Saia-Burgess Controls AG
Manual I/O-modules for PCD1 │ PCD2 series │ Document 27-600 – Release ENG09 │ 2019-05-01
5-74
I/O modules PCD1|PCD2
PCD2.W3x5
5
5.9.1
PCD2.W3x5, analogue inputs, 7 channels, 12 bit resolution,
electrical isolated
Application
High-speed input module with galvanic separation of inputs to Saia PCD
®
bus,
for general use 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
µ
A
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, galvanic separation of inputs to
Saia PCD
®
, channels themselves not separated
Resolution (digital representa-
tion):
12 bits (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 %
Repeating accuracy:
± 0.05 %
Temperature error (0 … +55 °C)
± 0.25 %
Conversion time A/D:
≤ 2 ms
Overvoltage protection:
W305:
± 40 VDC (permanent)
W325:
± 40 VDC (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 cage spring terminal block
(4 405 5002 0), for wires up to 1.5 mm²