Preparation For Test Operation; Preliminary Inspection [Power Off]; Connection To Built-In Programming Connector (Rs-422) - Mitsubishi FX3G SERIES User Manual

FX Series Programmable Controllers
3G
User's Manual - Hardware Edition
14.1

Preparation for Test Operation

14.1.1 Preliminary inspection [power OFF]

Incorrect connection of the power supply terminal, contact of the DC input wire and power supply wire, or
short-circuiting of output wires may result in serious damage.
Before applying power, check that the power supply and ground terminals are connected correctly and input/
output devices are wired properly.
The dielectric withstand voltage and insulation resistance test of the PLC should be measured in accordance with the following
procedures.
1) Remove all input/output wires and power supply wires from the PLC.
2) Connect a crossing wire to each of the PLC terminals (power supply terminal, input terminals and output terminals) except the
ground terminal.
For the dielectric withstand voltage test of each terminal, refer to the generic specifications for the product.(refer to Section 4.1)
3) Measure the dielectric withstand voltage and insulation resistance between each terminal and the ground terminal.
Dielectric withstand voltage: 1.5kV AC or 500V for 1min (The terminals vary in dielectric withstand voltage.)
Insulation resistance: 500V DC/5M

14.1.2 Connection to built-in programming connector (RS-422)

1. When connecting a peripheral device
Connect and disconnect the communication cable for the peripheral device.
At connection, align the "positioning mark" between the cable and the main unit.
Positioning mark
Communication cable
2. For continuous use of a peripheral device (such as GOT)
Cut off the area shown in the left figure below of the peripheral device connector cover (main unit) using a
nipper, etc., and connect the peripheral device as shown in the right figure below.
Peripheral device
connecting
connector cover
Cut off the dotted
line area.
or more
Programming
connector
(RS-422)
Positioning mark
Communication
cable
14 Test Operation, Adjustment, Maintenance and Troubleshooting
Notes
Connection example
14.1 Preparation for Test Operation
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