3.7
Electrical connections
The following must be considered for the electrical connections:
• The drive units have automatic voltage detection for 24...240
VAC/DC and do not need
to be adapted.
• The safety function for spring-return drives works by interrupting the supply voltage or,
depending on the version, by opening cable 3.
• The electrical connection within the Ex-area must be done via an Ex e terminal box that
is ATEX certified (e.g. ExBox)
• A device to protect against excess current < 10
A must be provided at the installation
location.
• The start-up current is approx. 2
A for approx.1 second.
• Depending on the version, integrated limit switches signal the rotation angle setting.
In this section, the nominal values of the cable diameters are specified without the tolerances
required in production.
3.7.1
Cable types and circuit diagrams for size S
3.7.1.1
Versions -XX-S
3.7.1.1.1 3-point no spring return
24...240 VAC/DC
~
~
–
+
PE
a
b
1
2
3
4
PA
Fig.
3:
SB1.0 - cable type 4+PE, cable diameter 7.2
mm
For explanation of the function of switches "a" and "b" see:
.
3 | Device description
18
Translation of the original installation guide · Version 1.0 · 2021-05-27