Fuji Electric FRENIC-VG Series, User Manual

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6.3 Synchronous Motor Drive PG Interface Card
6-51
Chap. 6
CO
NTR
O
L O
P
TIONS
6.3.4.3 Connection Diagram for Fuji servos
Change the shielding connection used for PG wiring from the motor's E terminal to the inverter's PGM
terminal in order to secure a noise margin to protect against improper operation of encoder signals.
Additionally, connecting shielding to the motor's E terminal is an effective way to reduce radiated noise.
MOTOR
GRH1.1BG-N000
Enco
der
FRENIC-VG
OPC-VG1-
PMPG
[PGP]
[PGM]
[PA]
[*PA]
[*PB]
[PB]
E
[F0]
[*F0]
[F1]
[F2]
[F3]
[*F1]
[*F2]
[*F3]
CN2
[PGM]
+5V
0V
A
*A
*B
B
Z
*Z
1
2
3
*1
*2
*3
Shielding
+5V
0V
A
*A
*B
B
Z
*Z
1
2
3
*1
*2
*3
Floating
shielding
E
20
19
3
2
4
5
8
7
13
15
18
12
14
17
10
14
13
1
2
4
3
5
6
7
9
11
8
10
12
15
Encoder output cables with
0.3 (m) connectors
Figure 6.3.7
Precautions
• The encoder's shielding (15-pin) is not connected to the motor's earth (E) terminal.