16
(3) Loosen the terminal screw and insert the cable into the terminal.
NOTE
• Undertightening can cause cable disconnection or malfunction. Overtightening can cause a short circuit or malfunction
due to damage to the screw or unit.
• When wiring cables to the inverter's RS-485 terminals while a plug-in option is mounted, take caution not to let the
cables touch the circuit board of the option or of the inverter. Otherwise, electromagnetic noises may cause
malfunctions.
• When one position detector is shared between FR-A8AP and CNC (computerized numerical controller), its output
signal should be connected as shown below. In this case, the wiring length between FR-A8AP and CNC should be as
short as possible, within 5 m.
Screw Size
Tightening Torque
Cable Size
Screwdriver
M2
0.22 N
m to 0.25 N
m
0.3 mm
2
to 0.75 mm
2
Small
flat-blade
screwdriver
(Tip thickness: 0.4 mm/tip width: 2.5 mm )
CAUTION
Do not use empty terminals as junction terminals because they are used in the option unit. If they are used as the junction terminals, the option unit
may be damaged.
After wiring, wire offcuts must not be left in the inverter. They may cause a fault, failure or malfunction.
Maximum 5 m
(two parallel cables)
CNC
Inverter
(FR-A8AP)
Position detector
Encoder
A8AP.book 16 ページ ２０１３年９月１２日 木曜日 午後７時４８分
