1st edition, 17-09-2020
7000.05070, 1st edition, 17-09-2020
7000.05070
Installation
18
4.2.4.2
Preset input
During commissioning and after a battery change, a voltage pulse must be applied to the
preset input (pin 1) to reset the revolution count.
Fig. 8:
Preset electrical circuit diagram
Provide mechanical switches, see Fig. 8.
Alternatively: Connect the preset pin to a digital output of a controller.
Connect the preset pin to ground externally using a pull-down resistor to ensure a
defined voltage of <2 V even with long cable lengths.
4.2.4.3
Connecting battery supply
Integrate the battery either in the extension of the supply line or in the customer-spe-
cific peripherals.
Connect the battery between pins U
BAT
and GND.
In case of an error (e.g. short-circuit between U
DD
and U
BAT
) the resistor R
V1
integrated
in the encoder limits the (reverse) current into the battery.
Fig. 9:
Battery connection option
Encoder
internal
U
DD
GND
Dig-In
Pre
Switch
1...4.7 k
W
Encoder
internal
U
DD
GND
Sensor
C
Battery
R
V1
= 300
W
U
BAT
R
V2
D1
+
–
