Mitsubishi Electric MELSERVO-J4 Instruction Manual page 193

9. OPTIONS AND PERIPHERAL EQUIPMENT
(2) Noise reduction techniques
(a) Data line filter (recommended)
Noise can be prevented by installing a data line filter onto the encoder cable, etc.
For example, ZCAT3035-1330 by TDK, ESD-SR-250 by NEC TOKIN, and GRFC-13 by Kitagawa
Industries are available as data line filters.
As a reference example, the impedance specifications of the ZCAT3035-1330 (TDK) are indicated
below. This impedances are reference values and not guaranteed values.
10 MHz to 100 MHz
(b) 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.
Rated
C R
voltage
[Ω ± 30%]
[µF ± 20%]
AC [V]
250 0.5
50 (1/2 W)
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 twice the drive current of the relay or the
like.
Impedance [Ω]
100 MHz to 500
MHz
80 150
OFF
ON
MC
Surge killer
(Ex.) CR-50500 Okaya Electric Industries)
Test voltage
Between terminals: 625 V AC, 50
Hz/60 Hz 60 s
Between terminal and case: 2000
V AC
50 Hz/60 Hz 60 s
39 ± 1
34 ± 1
TDK
Product name
Outline drawing (ZCAT3035-1330)
MC
SK
Relay
This distance should be short
Dimensions [Unit: mm]
Band (clear) AWG 18 Twisted wire
15 ± 1
Soldered
CR-50500
6 ± 1
300 min. 48 ± 1.5
9 - 48
Loop for fixing the
cable band
Lot number
Surge killer
(within 20 cm).
6 ± 1
300 min.
16 ± 1
+
[Unit: mm]
3.6
(18.5 + 5) max.
-
RA
Diode