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3. Installation
3.3 Installation
12
3.3.4 Noise Countermeasures
(1) Connection of frame ground (FG)
The frame should basically be grounded at one earth point. When relaying through the grounding
plate in the middle of the connection route, separate the desktop personal computer/panel
personal computer from the remote I/O unit, and the base I/O unit from the servo drive unit/spindle
drive unit, etc.
The NC Card FG is connected to the personal computer electric cabinet with card installation metal
fittings.
0 0
EMG1
HANDLE
RS232C
ENC#2
CF61
EMG2
DCIN
HR682
Remote
I/O unit
Desktop personal computer/
panel personal computer
Servo drive unit/spindle drive unit, etc.
Main ground
Base I/O unit
Note 1
Spindle motor
Note 1
Note 3
Note 2
Note 2
Servomotor
Note 1: This is not required when directly connecting to the main ground.
Note 2: Connect the motor's grounding cable to the servo drive unit and spindle drive unit.
Note 3: A spacer is used when mounting the HR682 card on the base I/O unit, but when not mounting on the base
I/O unit, connect the card to the main ground using the FG terminal.