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7XT3300-0*A00
Installation Hints
Screw-Type Terminals of the Connector Block
Use a conductor of at least 2.5 mm² to connect the device to protective or functional earth in
a low-resistance and low-inductance manner!
Use the screw-type terminals for connection and make sure you observe the marks, the
permissible cross-sections and bending radii.
The screw-type terminals on the 12-pin terminal block on the housing are loose on delivery.
Figure 7 Screw-type terminals on the 12-pin terminal block
Table 4
Terminal block
Connector
1
Auxiliary voltage, L1 (U
2
Auxiliary voltage, L2 (U
3
Auxiliary voltage, L3
4
Earth, PE
5
Signal relay L+
6
Blocking input (+)
7
Signal relay, 20-Hz voltage no available
8
Blocking input (-)
9
Signal relay, 20-Hz voltage available
10
reserved
11
20-Hz output, A
12
20-Hz output, B
C53000-B1175-C129-1
NOTE
For electromagnetic compatibility reasons you must twist the line pair
with about 20 turns between the 7XT33 (clamps 11/12) and the 7XT34
(clamp 1B4), see Figure 10. The line must not be longer than 35 cm in
the twisted condition.
12-pole
Designation
H+
H-
Screw-type terminal 1
Screw-type terminal 2
)
)
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