Toshiba nv Series Instruction Manual page 7

Power ON in the following order:
nv series
module supply external power
supply and external load power
supply.
If not following by this order, may cause
malfunction on accidents and machine
damage.
Safety Prec autions on Mai ntenanc e and Ins pections
Make sure that the external power
supply is turned off when attaching /
detaching modules, units. Terminal
blocks, or wiring cables.
Electrodes also appear on the back side
of the external terminal block of the
module, which may cause electric
shock.
Do not reverse the + and -, charge,
disassemble, over heat, drop into
fire, or short circuit of battery.
It may cause explosion or fire.
power supply→I/O
Unified Controller nv Series DeviceNet Module DN912 Instruction Manual
Turn off the load power before the nv
series power supply for system
safety.
If these are not observed, it may cause
accident or damage to the machine. The
external power supplied to the I/O
module should be shared with the load
power as much as possible. If not
possible, configure the system OFF so
that the external power supply and the
load power supply at the same time.
When replacing the power fuse or
alarm fuse of the device.
Failure to do so may cause electric
shock or fire.
Replace fuse and battery with
specified products.
Use of a non-specified product may
cause a fire or malfunction.
Be caution when measuring the
power supply voltage at the power
supply terminals of the module
during inspection.
There is a risk of electric shock.
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