Saia-Burgess
Controls Ltd.
Hardware Manual for the PCD3 Series│Document 26/789; Version E 5│31.01.2005
Hardware
PCD3.B100
5-17
5
General technical data
inputs and outputs
Resistance to interference:
according 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
Terminal:
Pluggable 10-pole cage clamp terminal (4 405 4957 0) or
pluggable 10-pole screw terminal (4 405 4959 0), both for
wires up to 2.5 mm²
LED’s and connection terminals
The module contains 8 LED’s:
●
2 LEDs are directly triggered by the inputs E0 and E1
●
4 LEDs are triggered by the inputs of the combined I/O’s and therefore always
indicate voltage status at the I/O terminal
If the combined I/O’s are used as outputs, the following should be noted:
The LED for combined outputs E/A2...E/A5 only comes on when the output is high
and a supply voltage of 24 V is connected.
Mixing up the combined inputs/outputs
If combined I/O’s are used as inputs in source operation, i.e. with sending devices
which either apply +24 V to the input, or which are open, the low status of an open
input can be overwritten 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 MOSFET can be destroyed, as it is not short-
circuit protected. For this reason, only positive-switching contacts should be used.
0
1
2
3
4
5
6
7
LED 0...7 Terminal 0
Description
Label
Address
Label
0
1
2
3
4
5
6
7
8
9
E0
E1
E 2
E 3
E
E
A6
A7
+
–
/A
/A
/A4
/A5
PCD3.B100
2 IN 2 Out
+ 4 I/Os
E
n
+
–
A
n
24V
+
–
Terminal 9
Terminal
B
1
0
0
