5.9 NOISE CONTROL (Cont'd)
• Motor frame grounding
Whenthe motor is at the machine side and grounded through the frame, Cf dv/dt current
flows from the PWMpower through the stray capacity of the motor. To prevent this
effect of current, motor ground terminalQ(motor frame) should be connected to
terminal Q of Servopack.
(Terminal Q of Servopack should be directly grounded.)
• Metallic Conduit Grounding
Whenmotor wiring is in a metallic conduit, ground the conduit and the terminal box.
Perform the following grounding procedures at one point.
(2) Noise filter installation
When noise filters are installed to prevent noise from the power line, the block type
must be used. The recommendednoise filter is shown in Table 5. 17. The power supply
to peripherals also needs noise filters.
Note
\
If the noise filter connection is wrong, the effect decreases greatly. Observing
the precautions, carefully connect them as shown in Pigs. 5.20 to 5.23,
Table 5.17 Recommended Noise Filter
RecommendedNoise Filter RecommendedNoise Filter
ServopackType Applicable Servopack Type Applicable
CACR- Noise Filter CACR- Noise Filter
Type Specifications Type I Specifications
I
Three-phase
HffA5BAB12 HR44BB LF-340 ]200VACclass, 40A
HRO1BAB12 LF-205A Single-phase HR6OBB
200VAC class, 5A
HRO2BAB12
Three-phase
HRA5BABII LF-350 {200VACclass, 50A
Single-phase
HRO3BAB12 LF-210 200VACclass, IOA (CORRECT) LF-2OSA Single-phase
(CORRECT) HRO1BABI1
Single-phase _ 200VACclass, 5A
HRO5BAB12 LF-215
4.
i
200VACclass, 15A HRO2BABll LF-210 [Single-phase
HRIOBAB LF-315 Three-phase 200MACclass, IOA
HR15BAB 200VACclass, 15A (WRONG) ,
(WRONG)
HRO3BABtl LF-215 [Single-phase
BRO3BB LF-305 Three-phase _ 200VACclass, 15A
HRO5BB _ 200VACclass, 5A
Single-phase
IIRO5BABll
LF-220
Three-phase 200MACclass, 20A
HRIOBB LF-315
HRI5BB 200VACclass, 15A '
Note: Noise filter madeby Tokin Corp.
BR2OBB LF-320 Three-phase
200VACclass, 20A
Three-phase
BR3OBB ! LF-330 200VACclass, 30A
,9
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