Lenze 9300 System Manual page 65

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Installation
Supply via external voltage source
X5
28 E1 E2 E3 E4 E5
Fig. 4-17 Connection of the digital input signals for external voltage supply
Tip!
The supply of the digital input signals via an external voltage source allows a backup operation in
the event of mains failure. After switching off the mains voltage all actual values are still detected
and processed.
•
Connect the positive pole of the external voltage source with X5/59 to create the backup
operation in the event of mains failure.
•
The external voltage must be able to supply a current
•
The starting current of the external voltage source is not limited by the controller. Thus, Lenze
recommends using voltage sources with current limitation or with an internal impedance of
Ω
Z > 1
4-26
GND2
39 A1 A2 A3 A4 ST ST 59
–
+
24 V ext.
(+18 VDC -0% ... +30 VDC +0%)
Minimum wiring required for operation
.
EDSVS9332P-B EN 3.0
+24V
≥
1 A .
9300STD337
L