Hardware Manual

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

Saia-Burgess Controls AG

PCD2.W2x0

Input/output (I/O) modules

5

5.7.3 PCD2.W2x0, analogue inputs, 8 channels, 10 bit resolutionPCD2.W2x0, analogue inputs, 8 channels, 10 bit resolution

Application

With its short conversion time of <50 μs, this module is universally suitable for

recording analogue signals. The only limitations are with weak signals, as with Pt 100

resistive temperature sensors, or with thermocouples.

Module overview

PCD2.W200 8 channels for signals 0 ... 10 V

PCD2.W210 8 channels for signals 0 ... 20 mA

PCD2.W220 8 channels for resistive temperature sensors Pt/Ni 1000

Technical data

Signal ranges: see module overview

Galvanic separation: no

Resolution (digital representation): 10 bits (0 ... 1023)

Measuring principle: non-differential, single-ended

Input resistance: 0 ... 10 V: 200 k�� / 0.15 %

0 ... 20 mA: 125 �� / 0,1 %

Pt/Ni 1000: 7,5 k�� / 0,1 %

Maximum signal current for the re-

sistance measurement with W220:

1.5 mA

Accuracy:

(of measured value)

± 3 LSB

Repeating accuracy:

(under same conditions)

within 1 LSB

Temperature error: ± 0.3 % ( ± 3 LSB), (over temperature range from

0° ... +55 °C)

Conversion time A/D: <50 μs

Overvoltage protection: W200/220: ± 50 VDC

Overcurrent protection: W210: ± 40 mA

Burst protection:

(IEC 1000-4-4)

± 1 kV, with unshielded cables

± 2 kV, with shielded cables

Time constant of input filter: W200: typically 5 ms

W210: typically 1 ms

W220 : typically 10 ms

Internal current consumption:

(from +5 V bus)

8 mA (W200/210/220)

Internal current consumption:

(from V+ bus)

5 mA (W200/210)

16 mA (W220)

External current consumption: 0 mA

Terminals: Pluggable 10-pole screw terminal block

(4 405 4847 0), for wires up to 1.5 mm²

A signal with wrong polarity at an input, may cause that the measuring results at the

other channels are significantly falsified.