Mitsubishi Electric A1S68DAV User Manual page 3

[DESIGN PRECAUTIONS]
Provide a failsafe circuit to ensure that the system as whole can continue to function
safely even if there is an external power supply fault or PLC failure.
Otherwise there will be danger of accidents due to erroneous outputs or
misoperation.
(1) The status of analog output differs depending on the settings for the functions
that control analog output. Make the settings with enough care. For details of the
analog output status, refer to Section 3.4.4 of the detailed manual.
(2) Normal output may not be obtained from output terminals or their internal circuits.
Provide an external circuit to monitor output signals whose disruption could
cause serious accidents.
Do not bundle the control wire and the communication cable with the main circuit or
power line or keep them close to one another.
Keep the control wire and the communication cable at least 100mm (3.94inch) away
from the main circuit or power line.
Otherwise, noise or malfunctions will occur.
At power ON/OFF, voltage or current may instantaneously be output from the output
terminal of this module. In such case, wait until the analog output becomes stable to
start controlling the external device.
[INSTALLATION PRECAUTIONS]
Use the PLC in an environment that meets the general specifications given in the
User's Manual of the CPU module in use.
Using it an environment which does not meet the general specifications could cause
electric shock, fire or malfunctions, and damage or deterioration of the module.
Install the module by engaging the module mounting projections on the lower part of
the module in the mounting holes of the base unit.
Incorrect installation could result in malfunctions, failure of detachment.
WARNING
CAUTION
CAUTION