Omron R88D-1SN01H-ECT, Руководство пользователя

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4 Configuration and Wiring
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User’s Manual (I586)
4-3 Wiring
Con
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3-2 Selecting
Connection
Component
• Install surge suppressors for a load with an induction coil such as a relay, solenoid, and clutch.
• The following table gives the types of surge suppressors and the recommended products.
• The manufacturer of varistor is shown below. Refer to the catalogs from the manufacturer for details.
Varistor: SEMITEC Corporation, Panasonic Corporation
Select a contactor based on the inrush current that flows through circuits and the maximum momentary
phase current.
For details on the inrush current of the Servo Drives, refer to Molded Case Circuit Breaker (MCCB) on
page 4-39.
The I/O signals may malfunction if control I/O is affected by noise.
• Use the control I/O power supply (especially 24 VDC) which is completely separated from the exter-
nal power supply used for operation. Especially, be careful not to connect the ground wires of these
two power supplies.
• Install a noise filter on the primary side of the control I/O power supply.
• When you use a motor with a brake, do not share the 24 VDC power supply between the brake and
the control I/O (24 VDC). Also, do not connect the ground wires. Doing so may cause I/O signals to
malfunction.
• If there is a long wiring for the control I/O power supply, you can improve its noise immunity by adding
an approximately 1-µF laminated ceramic capacitor between the control I/O power supply and the
ground at the Servo Drive's input section or the Controller's output section.
Surge Suppressors
Type Feature Recommended product
Diode Diodes are used for relatively small loads
such as relays when the reset time is not
an issue.
The surge voltage at power cutoff is the
lowest, but the reset time takes longer.
Used for 24/48-VDC systems. Use a high-speed diode, especially the
fast-recovery diode with short reverse
recovery time such as RU2 made by San-
ken Electronic Co., Ltd.
Varistor Thyristors and varistors are used for
loads when an induction coil is large, as in
a solenoid, and when reset time is an
issue.
The surge voltage at power cutoff is
approximately 1.5 times the varistor volt-
age. Select the varistor voltage according to
the following list.
• 24-VDC type: varistor voltage 39 V
• 100-VDC type: varistor voltage 200 V
• 100-VAC type: varistor voltage 270 V
• 200-VAC type: varistor voltage 470 V
Capacitor and
resistor The combination of capacitor and resistor
is used to absorb vibration in the surge at
power cutoff. You can shorten the reset
time by selecting the appropriate capaci-
tance and resistance. Okaya Electric Industries Co., Ltd.
XEB12002 0.2
μ F - 120 Ω
XEB12003 0.3 μ F - 120 Ω
Contactor
Improving Noise Immunity of Control I/O Signals