Lenze EVS 9300 series, System Manual

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Installation
Electrical installation
4.2.11 Control connections
4-42
L
EDSVS9332S-B EN 3.0
Supply via external voltage source
GND2 +24V
X5
DIGOUT1 DIGOUT3 DIGOUT2 DIGOUT4
+
–
24 V ext.
(+18 VDC -0% … +30 VDC +0%)
28 E1 E2 E3 E4 E5 A1 A2 A3 A4 ST ST 59 39
3k 3k 3k 3k 3k 3k
47k
3k 3k 3k 3k 3k
50mA 50mA 50mA 50mA
9300STD337
Fig. 4-22 Connection of the digital input signals with supply via external voltage source
Minimum wiring required for operation
Tip!
Supplying the digital input signals via an external voltage source enables a backup operation in
case of mains failure . After switching off the mains voltage all actual values are continued to be
detected and processed.
z Connect the positive pole of the external voltage source with X5/59 to establish the backup
operation in the event of mains failure.
z The external voltage source must supply a current of
≥
1 A.
z The starting current of the external voltage source is not limited by the controller. Lenze
recommends the use of voltage sources with current limitation or with an internal impedance
of Z > 1
Ω
.