YASKAWA SERVOPACK Sigma 7W Series Product Manual page 65

 In places with poor power supply conditions, ensure that the input power is supplied within the
specified voltage range.
There is a risk of equipment damage.
 Provide sufficient shielding when using the SERVOPACK in the following locations.
• Locations that are subject to noise, such as from static electricity
• Locations that are subject to strong electromagnetic or magnetic fields
• Locations that are subject to radiation
• Locations that are near power lines
There is a risk of equipment damage.
 Configure the circuits to turn ON the control power supply to the SERVOPACK before the 24-V
I/O power supply.
If the control power supply to the SERVOPACK is turned ON after the external power supply, e.g.,
the 24-V I/O power supply, the outputs from the SERVOPACK may momentarily turn ON when the
power supply to the SERVOPACK turns ON. This can result in unexpected operation that may
cause injury or device damage.
 Provide emergency stop circuits, interlock circuits, limit circuits, and any other required safety
measures in control circuits outside of the SERVOPACK.
There is a risk of injury or device damage.
 If you use MECHATROLINK I/O Modules, use the establishment of MECHATROLINK communi-
cations as an interlock output condition.
There is a risk of device damage.
 Select the I/O signal wires for external wiring to connect the SERVOPACK to external devices
based on the following criteria:
• Mechanical strength
• Noise interference
• Wiring distance
• Signal voltage
 Separate the I/O signal cables for control circuits from the power cables both inside and outside
the control panel to reduce the influence of noise from the power cables.
If the I/O signal lines and power lines are not separated properly, malfunction may occur.
Example of eparated Cable
teel eparator
I/O ignal
Power
cable in
cable
control circuit
 Whenever possible, use the Cables specified by Yaskawa.
If you use any other cables, confirm the rated current and application environment of your model
and use the wiring materials specified by Yaskawa or equivalent materials.
 Securely tighten cable connector screws and lock mechanisms.
Insufficient tightening may result in cable connectors falling off during operation.
 Do not bundle power lines (e.g., the Main Circuit Cable) and low-current lines (e.g., the I/O Sig-
nal Cables or Encoder Cables) together or run them through the same duct. If you do not place
power lines and low-current lines in separate ducts, separate them by at least 30 cm.
If the cables are too close to each other, malfunctions may occur due to noise affecting the low-cur-
rent lines.
 Install a battery at either the host controller or on the Encoder Cable.
If you install batteries both at the host controller and on the Encoder Cable at the same time, you
will create a loop circuit between the batteries, resulting in a risk of damage or burning.
 When connecting a battery, connect the polarity correctly.
There is a risk of battery rupture or encoder failure.
CAUTION
NOTICE
4.1 Wiring and Connecting SERVOPACKs
4
4-3