Panasonic MINAS A5 Series Operating Instructions Manual page 57

1. Conformance to international standards
Residual current device
Install a type B Residual current device (RCD) at primary side of the power supply.
Grounding
(1) To prevent electric shock, be sure to connect the ground terminal (
and the ground terminal (PE) of the control panel.
(2) The ground terminal (
minals are provided.
Structure of control board
If there is a gap at cable inlet/outlet, mounting hole of operation panel or a door, radio
waves will penetrate into or radiate out through the gap. To prevent unfavorable condi-
tions due to radio frequency activities, observe the following control board design and
selection instruction.
The control board should be made of metal which provides electrical continuity.
The control board should not have electrically-isolated conductor.
All units installed in the casing should be grounded to the case.
Increasing noise resistance of control I/O signal
When noise is applied to the control input/output, it causes displacement and malfunc-
tioning of I/O signal.
X1 to X7 are secondary side circuit which should be isolated from the primary power
source (24 VDC control power source, 24 VDC braking power source and 24 VDC for
regenerative resistor). Do not connect the secondary side circuit to the primary power
source and ground wire. Otherwise, I/O signal will cause error operation.
Control power source (particularly 24 VDC) should be completely isolated from external
operating power source. Never connect the ground of the control power source to that
of external power source.
The signal line should have shield, the both end of which should be connected to the
ground.
Note For driver and applicable peripheral equipments, refer to P.2-10 "Driver and List of Applicable
Peripheral Equipments".
Use options correctly after reading Operating Instructions of the options to better understand
Caution
the precautions.
Take care not to apply excessive stress to each optional part.
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) must not be shared with other equipment. Two ground ter-
1
2
) of the driver,
3
4
5
6
7
2-9