Hardware Manual

Hardware Manual PCD 1 / PCD 2 Series│Document 26 / 737│Edition EN 15│2008-07-22

Saia-Burgess Controls AG

PCD2.W3x5

Input/output (I/O) modules

5

5.8.1 PCD2.W3x5, analogue inputs, 7 channels, 12 bit resolution, elect. isol.

Application

High-speed input module with galvanic separation of outputs to 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 mA20 mA 55 μA

PCD2.W325: Voltage -10 ... +10 V 5 mV5 mV

*) Resolution = value of least significant bit (LSB)

Technical data

Input ranges: see module overview

Galvanic separation: 500 V, galvanic separation of outputs to PCD,

channels themselves not separated

Resolution (digital representation): 12 bits (0 ... 4095)

Measuring principle: non-differential, single-ended

Input resistance: W305: 13.5 k�� / 0.1 %

W315: 120 �� / 0.1 %

W325: 13.7 k�� / 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 4998 0), for wires up to 1.5 mm²