Eaton PROFIBUS-DP EZ204-DP User Manual Page 44

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Installation
MN05013003E40
For longer lengths connect in series a diode (e.g. 1N4007) for
1 A, min. 1000 V reverse voltage, to the EZ input. Ensure that
the diode is pointing towards the input as shown in the circuit
diagram, otherwise EZ will not detect the 1 state.
Figure 11: AC input with suppression diode for EZ-AC and EZ-AB
EZ-AC:
Inputs I7 and I8 have a higher input current on the EZ-AC.
Neon bulbs with a maximum residual current of 2 mA/1 mA at
230 V/115 V can be connected to I7 and I8.
Two-wire proximity switches have a residual current with the
“0” state. If this residual current is too high, the EZ input may
only detect a “1” signal.
Therefore, use inputs I7 and I8. An additional input circuit is
required if more inputs are used.
L
N
LNN
I1
F1
J
Always use neon bulbs that are operated with a separate N
connection.
Caution!
Do not use reed relay contacts at I7, I8. These may burn or
melt due to the high inrush current of I7, I8.
EZ500_700.book Page 40 Tuesday, May 3, 2005 5:15 PM
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