4-2 Wiring
4-2-5 Conforming to EMC Directives
Dimensions
•
Noise Filter for the Brake Power Supply (SUP-P5H-EPR)
Two, 4.8 dia.
Five, M4
Surge Suppressors
•
Install surge suppressors for loads that have induction coils, such as relays, solenoids,
brakes, clutches, etc.
•
The following table shows types of surge killers and recommended products.
Type
Features
Recommended products
Diode
Diodes are used for relatively small loads when
the reset time is not an issue, such as relays.
The reset time is increased because the surge
voltage is the lowest when power is cut off.
Used for 24/48-V DC systems.
Use a fast-recovery diode with a short
reverse recovery time.
Example: Fuji Electric Co., ERA22-06
Thyristor or
varistor
Thyristors and varistors are used for loads when
induction coils are large, as in electromagnetic
brakes, solenoids, etc., and when reset time is
an issue. The surge voltage when power is cut
off is approximately 1.5 times the varistor
voltage.
Select the varistor voltage as follows:
24 VDC system: 39 V
100 VDC system: 200 V
100 VAC system: 270 V
200 VAC system: 470 V
Cap
resistor
The cap resistor combination is used to
absorb vibration in the surge when power is cut
off. The reset time can be shortened by
selecting the appropriate capacitance and
resistance.
Okaya Electric Industries Co., Ltd.
XEB12002 0.2 µF – 120
Ω
XEB12003 0.3 µF – 120
Ω
Note: Thyristors and varistors are made by the following companies. Refer to manufacturers’
documentation for details on these components.
Thyristors: Ishizuka Electronics Co.
Varistors: Ishizuka Electronics Co., Matsushita Electric Industrial Co.
Contactors
•
Select contactors based on the circuit's inrush current and the maximum momentary
current.
•
The Servo Driver inrush current is covered in the preceding explanation of no-fuse
breaker selection, and the maximum momentary current is approximately twice the
rated current.
•
The following table shows the recommended contactors.
Maker
Model number
Rated current
Coil voltage
J7L-09-22200
11 A
200 VAC
J7L-12-22200
13 A
200 VAC
J7L-18-22200
18 A
200 VAC
OMRON
J7L-32-22200
26 A
200 VAC
4-17
Summary of Contents for SMARTSTEP Junior R7D-ZP
Page 3: ...2 ...
Page 18: ...Section 1 Configuration Features and System ...
Page 25: ...1 5 Applicable Standards 1 5 2 UL and cUL Standards 1 8 ...
Page 26: ...Section 2 Dimensions Standard Models and ...
Page 36: ...Section 3 Specifications ...
Page 62: ...Section 4 System Design ...
Page 86: ...Section 5 Operation ...
Page 96: ...Section 6 Troubleshooting ...
Page 109: ...6 5 Periodic Maintenance 6 5 3 Replacing the Cooling Fan 6 14 ...
Page 110: ...Appendix ...