11
5. Application Notes
The Ethernet ports are fitted with overvoltage discharge protection. Internal varistors limit voltage surges to
approx 70 V. The connecting cables of the digital I/O ports must not be longer than 30 m.
6. Mounting Instructions
When mounting and operating the junctions, the corresponding electrical and mechanical regulations, stan-
dards and safety rules must be observed. The junction must be protected against mechanical influences. The
product must be fastened in such a way that the mounting position cannot change. The junction is designed
for use in the industrial sector. The industrial environment is characterized in that consumers are not connected
directly to the public low-voltage mains network. Additional measures must be taken for use in the residential
sector, business and commercial sectors.
The table below defines the tightening torques of the plugs and fastening options for ensuring compliant and
faultless operation.
Connection type
Tightening torque in (Nm)
M12
0.4
7/8" plug
1.5
FE ground strap
2.2±0.2
Junction Mounting
4.0±0.2
7. Initial Operation
Project planning, installation, start-up, maintenance and testing of the devices may only be carried out by quali-
fied electrical technicians familiar with the safety standards of automation technology.
Only cables and accessories that meet the standards and requirements for safety, electromagnetic
compatibility and, if necessary, telecommunications terminal equipment and the specifications. In case of
damage, the product must not be used further on. In the event of improper use, the guarantee and liability claim
against the manufacturer shall lapse.
Information concerning which cables and accessories are approved for installation can be found at
www.wenglor.com
or are described in this manual.
