Saia-Burgess Controls AG
Manual Manual PCD 1 / PCD 2 Series │ Document 26 / 737 EN22 │ 2013-11-26
5
Input/output (I/O) modules
5-72
Analogue input modules with electricaly isolation
5.9.1 PCD2.W3x5, analogue inputs, 7 channels, 12 bit resolution, elect. isol.
Application
High-speed input module with galvanic separation of outputs 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 µA
PCD2.W325: Voltage -10 … +10 V 5 mV
*) Resolution = value of least signicant bit (LSB)
Technical data
Input ranges: see module overview
Galvanic separation: 500 V, galvanic separation of outputs to Saia PCD
®
,
channels themselves not separated
Resolution (digital representation): 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 lter: 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
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