Safety Precautions
16
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
Cautions
Caution
Application
Do not touch any Unit when power is being supplied or immediately after the
power supply is turned OFF. Doing so may result in burn injury.
Wiring
Be sure that all terminal screws and cable connector screws are tightened to
the torque specified in the relevant manuals. The loose screws may result in
fire or malfunction.
When you connect a computer or other peripheral device to a Controller that
has a non-isolated DC power supply, either ground the 0-V side of the exter-
nal power supply for the Unit power supply or do not ground it at all.
If the peripheral devices are grounded incorrectly, the external power supply
for the Unit power supply may be short-circuited. Never ground the 24-V side
of the power supply, as shown in the following figure.
Online Editing
Execute online editing only after confirming that no adverse effects will be
caused by deviations in the timing of I/O. If you perform online editing, the
task execution time may exceed the task period, I/O may not be refreshed
with external devices, input signals may not be read, and output timing may
change.
Internal
power supply
circuit
(Non-isolated)
CPU Unit
Cable
External device
(e.g. computer)
External power supply
(Unit power supply)
Non-isolated Option Board,
Communication Interface Unit, etc.
Unit power
supply
terminals
Non-isolated DC
power supply
To Next Page
Loading...
Need help?
General
