SBC PCD2.M5 Series - Page 153

Hardware Manual for the PCD2.M5 Series│Document 26/856; Version EN 12│2014-07-24
Saia-Burgess Controls AG
Digital combined input/output modules
Input/output (I/O) modules
6-42
6
General technical data on inputs and outputs
Resistance to interference:
acc. to IEC 801-4
4 kV under direct coupling
2kVundercapacitivecoupling(wholetrunkgroup)
Internal current consumption:
(from+5Vbus)
1 … 25 mA
typ. 15 mA
Internal current consumption:
(fromV+bus)
0 mA
External current consumption: Load current
Terminals: Pluggable10-polescrewterminalblock(440548470),for
wires up to 1.5 mm²
LEDs and connection terminals
Input filter
Recovery diodes
LEDs
Screw terminals
9 8 7 6 5 4 3 2 1 0
Bus connector
Bus interface
Output transistors (MOSFET)
The module contains 8 LEDs:
● 2LEDsaredirectlytriggeredbythepureinputs.
● 2LEDsaredirectlytriggeredbythepureoutputs.
● 4LEDsaretriggeredbytheinputsofthecombinedinputs/outputsandtherefore
always indicate voltage status at the I/O terminal.
If the combined I/Os are used as outputs, the following should be noted:
The LEDs of combined outputs I/O2...I/O5 only light up when the output is high and a
supply voltage of 24 V is connected to Uext.
Mixing the combined inputs/outputs
If combined I/Os are used as inputs in source operation, i.e. with sending devices which
either apply +24 V to the input or are open, the low status of an open input can be overwrit-
ten as high if the corresponding output at the same address is set in error. However, if the
input is shifted to 0 V with a changeover contact and the corresponding output is set in error,
theMOS-FETcanbedestroyed,asitisnotshortcircuitprotected.Forthisreason,only
positive-switching contacts should be used.