Chapter 2: Installation 2.4 Electrical Installation
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Digital Outputs
Note: If an inductive load, e.g. a relay coil, is connected to a digital output the coil
must be shunted by a diode, such as a 1N4003 or similar. The diode should be
wired as close as possible to the coil.
DO1 to DO6 are open-emitter current source transistor outputs. The maximum
current is limited to a maximum of 250 mA per output, total maximum load
500mA. The outputs are short circuit protected.
Figure 21 DO1 to DO6 Internal Supply.
DO1
+24V
d4
d16
d2
z2
d24
signal ground
DO2
d6
DO3
d8
DO4
d10
DO5
d12
DO6
d14