Installation
09/01 AWB8230-1412GB
40
When connecting a relay to one of the digital outputs 11 or 12,
connect a free-wheel diode in parallel with the relay, so that the
self-induction voltage generated when the relay is switched off
cannot destroy the digital outputs.
Figure 34: Relay with free-wheel diode
h
Use relays that switch reliably at 24 V H and a current of
about 3 mA.
h
Lay the control and signal cables separately from the
mains and motor cables.
+ 24 V
100 mA
CM2 1211
Figure 35: Crossover of signal and power cables
a Power cable: L1, L2, L3 or L and N, U, V, W, L+, DC+, DC–
b Signal cables: H, O, OI, L, FM, 1 to 5, 11 and 12, CM2, P24
f 100
ba
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