YASKAWA motoman NX100

7.3 CPU Unit
7-16
" Connection of External Power Supply for I/O
At factory setting, the internal power supply for I/O is used. If the external power supply for I/O
is used, connect it with following procedure.
1. Remove the wire connected between CN12-1 to -3 and CN12-2 to -4 of the robot I/F
unit.
Connect +24V of the external power supply to CN12-1 and 0V to CN12-2 of the robot
I/F unit.
• The internal power supply of 24V of about 1A of NX100 can be used for I/O.
Use external 24V power supply for higher currents and to isolate the circuit inside and
outside the NX100.
• Power supply circuit for I/O (+24 VU, 024 VU) has 3A fuses (FU1, FU2).
• Install the external power supply outside the NX100 to avoid electric noise problems.
• If the internal power supply is selected and the external power supply is connected to
CN12-1 to -3 and CN12-2 to -4, do not connect the line of the external power supply to
the +24VU and 0VU terminals. The unit may malfunction if the external power supply is
also connected.
Robot!I/F!unit!(JZNC-NIF01)
CN12
-1!(EX24VIN)
-2!(EX024VIN)
-3!(+24V)
-4!(024V)
+24VU
024VU
In!case!using!internal!power!supply
Robot!I/F!unit!(JZNC-NIF01)
CN12
-1!(EX24VIN)
-2!(EX024VIN)
-3!(+24V)
-4!(024V)
+24VU
024VU
External!
Power!Supply
+24V
0V
In!case!using!external!power!supply
FU1
FU2
3A
3A
+24V
024V
(Ready!by!Customer)
FU1
FU2
3A
3A
+24V
024V
NOTE