Saia-Burgess Controls AG
Hardware manual for PCD3 series │ Document 26-789 ENG19│ 2018-06-29
General technical data
PCD3.Mxxx0 Classic CPU and expansion enclosure
3-4
3
3.2 General technical data
Supply (external and internal)
Supply voltage 24 VDC –20… + 25% smoothed or
19VAC±15%twowayrectied(18VDC)
Loss/power consumption
1)
typically 15 W for 64 I/Os
Load capacity of internal 5 V
Bus
2)
600 mA
Load capacity of internal + V
Bus (16..24 V)
2)
The load capacity of the + V bus depends on the load of the 5V bus as
follows (the more accurate the 24V, the higher the possible load):
24 V
– 25 %
: 100 [mA]
+30 %
24 V
– 20 %
: 150
–
I
bus 5 V
[mA]
+25
% 15
24 V
– 10 %
: 260
–
I
bus 5 V
[mA]
+10
% 4.8
1) The loads and other loads connected to the outputs are usually more important for sizing the feed than the
internal power dissipation of the controller
2) When planning PCD3 systems, it must be checked whether the two internal power supplies are not
overloaded. This control is particularly important when using analog, counting and positioning modules,
as these sometimes have a fairly large power consumption. To calculate the power consumption, we
recommendusingtheDeviceCongurator,whichispartofthePG5V2.0.
Climatic conditions
Operating environment
temperature
0 … +55 °C When mounted on a vertical surface with vertically arranged
connection terminals.
0 … +40 °C Reduced temperature range in all other mounting positions.
Storage temperature –25…+85 °C
Relative humidity 10…95% Without condensation
Vibration resistance
Swing according to EN/IEC61131-2
5…13.2 Hz constant amplitude 1.42 mm
13.2…150 Hz constant acceleration (1 g)
Electrical safety
Protection type IP 20 according to EN60529
Clearances and creepage according to EN61131-2 and EN50178 between circuits and bodies as well
as between isolated circuits according to overvoltage category II, pollution
degree 2
Test voltage VAC 350 V / 50 Hz for nominal device voltage 24 VDC
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