3.2.3 Frame Earth Connection
1.
Loosen the screw.
2.
Insert an earthing wire (user-
supplied).
3.
Tighten the screw.
4.
Connect the earthing wire to earth.
A
B
(1)
A. Screw
B. Earthing wire
(1) To earth
WARNING
•
Proper earthing (connection to earth) is very important to reduce the risk to the user of
electrocution or to protect the unit from the bad effects of external noise in the case of a
lightning strike.
•
The earthing wire of the AC cable has an effect against external noise and lightning strikes,
but it may not be enough to protect the unit and to ensure electromagnetic compatibility. A
permanent connection between earth and the earth terminal of the unit must be made.
CAUTION
For earthing wire, green-and-yellow insulation is required, and the cross-sectional area of the conductor
must be more than 0.75 mm
2
or 18 AWG.
Notice
Be sure to comply with applicable local regulations (e.g., laws, guidelines).
3.2.4 19-inch Rack Mounting
WARNING
•
Be careful not to drop any components. Dropping components may damage them or cause an
injury.
•
When mounting the unit on a 19-inch rack, only use the 19-inch rack mounting equipment
(attachment bracket, screws) included with the unit.
CAUTION
•
When the unit is mounted on a 19-inch rack, make sure that the installation of the unit does not cause
the temperature of the rack to exceed its limit.
•
When the unit is mounted on a 19-inch rack, allow space of at least 5 cm to the sides of unit and at
least 10 cm to the rear of the unit for ventilation of the fan.
3.2.3 Frame Earth Connection
30
Installation Manual
Содержание VL-VN1700
Страница 4: ...Introduction 4 Installation Manual ...
Страница 24: ...2 2 2 System Capacity 24 Installation Manual ...
Страница 38: ...3 5 Starting the Control Box 38 Installation Manual ...
Страница 50: ...4 7 Programming UM System Manager Features 50 Installation Manual ...
Страница 56: ...5 2 Port Security 56 Installation Manual ...
Страница 63: ...Section 7 Appendix This section provides information about System Prompt Languages Installation Manual 63 ...
Страница 65: ...Note Installation Manual 65 ...
Страница 66: ...Note 66 Installation Manual ...
Страница 67: ...Note Installation Manual 67 ...