-33-
No. JXC
※
-OMT0002-C
Caution
(1) A dedicated ground connection must be used. Grounding should be to a D-class ground (ground
resistance of 100Ω or less).
(2) The cross sectional area of the grounding cable should be 2mm
2
minimum.
The grounding point should be as near as possible to the controller, to keep the grounding cable
as short as possible.
(3) Mounting location
Design the size of the control panel and the installation so that the temperature surrounding the
controller is 40
o
C or less. Mount the controller vertically with 50 mm or more space at the top and
bottom of the controller as shown below.
Establish the space more than 100mm between the front of the controller and a door (lid) so that
the connectors are possible to connect and disconnect. Leave enough space between the
controllers so that the operating temperature of the controllers remains within the specification
range. Allow sufficient space for mounting. Avoid mounting the controller near a vibration source,
such as a large electromagnetic contactor or no-fuse breaker on the same panel.
Caution
If the mounting surface for the controller is not flat or is uneven, excessive stress could be
applied to the case, which could cause failure. Mount on a flat surface.
100 or more
Shared grounding: Not acceptable
Controller
Other
equipment
Dedicated grounding: Good
Controller
Other
equipment
D-class ground
(ground with the
resistance less than
100 ohm)