Saia-Burgess Controls AG
Manual I/O-modules for PCD1 │ PCD2 series │ Document 27-600 – Release ENG09 │ 2019-05-01
6-74
I/O modules PCD3
PCD3.W3x5
6
6.9.1
PCD3.W3x5, analogue inputs electrically isolated from the I/O Bus,
7 channels, 12 Bit resolution
Application
High-speed input modules 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. Electrically isolated from the CPU.
Module overview
resolution *)
PCD3.W305:
Voltage 0…10 V
2.5 mV
PCD3.W315:
Current 0…20 mA
5
µ
A
PCD3.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 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%
Repeat 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 spring terminal block (4 405 4998 0), for Ø
up to 1.5 mm²,