• Observe the following precautions when wiring main circuit terminals.
• Do not turn ON the power to the SERVOPACK until all wiring has been completed, including the main circuit terminals.
• Remove detachable main circuit terminals from the SERVOPACK prior to wiring.
• Insert only one main circuit cable per opening in the main circuit terminals.
• Make sure that no part of the core wire comes into contact with (i.e., short-circuit)
• Install a battery at either the host controller or the battery unit of the encoder, but not both. It is dangerous to install batteries at both ends simultaneously, because that sets up
a loop circuit between the batteries.
• Be sure to wire correctly and securely. Failure to observe this caution may result in motor overrun, injury, or malfunction.
• Always use the specified power supply voltage. An incorrect voltage may result in fire or malfunction.
• Take appropriate measures to ensure that the input power supply is supplied within the specified voltage fluctuation range. Be particularly careful in places where the power supply is unstable. An incorrect power supply may result in damage to the product.
• Install external breakers or other safety devices against short-circuiting in external wiring. Failure to observe this caution may result in fire.
• Take appropriate and sufficient countermeasures for each form of potential interference when installing systems in the following locations.
• Locations subject to static electricity or other forms of noise
• Locations subject to strong electromagnetic fields and magnetic fields
• Locations subject to possible exposure to radioactivity
• Locations close to power supplies Failure to observe this caution may result in damage to the product.
• Do not reverse the polarity of the battery when connecting it.
Failure to observe this caution may result in damage to the battery, the SERVOPACK, or cause an explosion.
• Wiring or inspection must be performed by a technical expert
Precautions When Not Using the Safety Function When not using the safety function, use the SERVOPACK with the safety function jumper connector (JZSP-CVH05-E, provided as an accessory) inserted. If the SERVOPACK is used without the jumper connector inserted into CN8, no current will flow to the motor and no torque will be output. When Hbb is displayed on the panel operator and digital operator, the motor is baseblocked by the safety function. C
Hard Wire Base Block (HWBB) Function The Hard Wire Base Block function (hereinafter referred to as HWBB function) is a safety function designed to baseblock the motor (shut off the motor current) by using the hardwired circuits: Each circuit for two channel input signals blocks the run signal to turn off the power module, and the motor current is shut off. (Refer to the diagram below.)
The following risks can be estimated even if the HWBB function is used. These risks must be included in the risk assessment.
• The motor will rotate in an application where external force is applied to the motor (for example, gravity on the vertical axis). Take measures to secure the motor, such as installing a mechanical brake.
• The motor may move within the electric angle of 180 degrees in case of the power module failure, etc. The number of rotations or movement distance depends on the motor type as shown below. Rotary motor: 1/6 rotation max. (rotation angle at the motor shaft) Direct-drive motor:1/20 rotation max. (rotation angle at the motor shaft) Linear motor: 30 mm max.