Mitsubishi Electric MELSERVO-JET User Manual page 93

Noise reduction products
■Data line filter (recommended)
Noise can be prevented by installing a data line filter onto cables such as the encoder cable.
For example, ZCAT3035-1330 by TDK, ESD-SR-250 by TOKIN, GRFC-13 by Kitagawa Industries, and E04SRM563218 by
SEIWA ELECTRIC are available as data line filters.
As a reference example, the impedance specifications of the ZCAT3035-1330 (TDK) are indicated below. These impedances
are reference values and not guaranteed values.
Impedance [Ω]
10 MHz to 100 MHz
80
[Unit: mm]
39 ± 1 Loop for
fixing cable band
34 ± 1
Product
Lot number
name
Dimensions (ZCAT3035-1330)
■Surge killer (recommended)
Use of a surge killer is recommended for AC relay, magnetic contactor or the like near the servo amplifier. Use the following
surge killer or equivalent.
OFF
ON
MC
MC
SK
Surge killer
Ex.
CR-50500 (Okaya Electric Industries)
Rated C [μF R [Ω ±30
voltage ±20 %] %]
AC [V]
250 0.5 50 (1/2W)
Note that a diode should be installed to a DC relay or the like.
Maximum voltage: Not less than four times the drive voltage of the relay or the like
Maximum current: Not less than two times the drive current of the relay or the like
+ -
RA
Diode
Relay
Surge killer
20 cm or less
Test voltage Dimensions [Unit: mm]
Between
Mounting band
terminals: 625
V AC, 50 Hz/60
Soldered
Hz 60 s
Between
6 ± 1
terminal and
300 or more
case: 2000 V
AC
50/60 Hz 60 s
100 MHz to 500 MHz
150
AWG 18 stranded wire
15 ± 1
6 ± 1
48 ± 1.5 300 or more
6 OPTIONS AND PERIPHERAL EQUIPMENT
6.10 Noise reduction techniques
φ3.6
16 ± 1
(18.5 + 5) or less
6
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