SBC PCD2.M5 Series - Page 188

Hardware Manual for the PCD2.M5 Series│Document 26/856; Version EN 12│2014-07-24
Saia-Burgess Controls AG
Analogue output modules, electrically isolated
Input/output (I/O) modules
6-77
6
Connection for 0 … 20 mA(W615)
4 (A2)
D
A
5
I
VOLTAGE
CONTROLLED
CURRENT
SOURCE
+ 24 VDC
R = 0...500 Ω
13
12
An external 24 VDC supply is required for current outputs.
Block diagram
OP-Amp output stage
A0
COM
A1
COM
A2
COM
A3
COM
A4
COM
A5
COM
DAC
Reference
Voltage 2.5 V
μController
PCD Bus
I/O Bus
DC / DC
converter
Galvanically
separated
interface
Electrical isolation
VCC
COM
+5 V GND
Filter
+Uin
-Uin
Programming
Classic:Forprogrammingthemodules,anFBoxisavailable.
xx7andRIOs:Thermwarereadsinthevaluesaccordingtotheconguration(I/O
Builderornetworkcongurator)
Watchdog:Thismodulecanbeusedonallbaseaddresses;thereisnointeraction
with the watchdog on the CPUs.
Fordetails,pleaserefertothe"Watchdog" section, which describes the correct use
of the watchdog in conjunction with PCD2 components.