5
Precautions for use
3 Precautions for use
This chapter covers restrictions and requirements the user should consider when using the product.
Be sure to match the output power of the driver with that of the motor when using.
Wiring
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Connect protective devices to the power line
Connect a circuit breaker or earth leakage breaker to the driver power line to protect the primary circuit. When installing
an earth leakage breaker, use a product with measures to suppress high-frequency current.
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Noise elimination measures
Refer to the USER MANUAL for the noise elimination measures.
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Preventing leakage current
Stray capacitance exists between the driver’s current-carrying line and other current-carrying lines, the earth and the
motor, respectively. A high-frequency current may leak out through such capacitance, having a detrimental effect on
the surrounding equipment. The actual leakage current depends on the driver’s switching frequency, the length of
wiring between the driver and motor, and so on. When connecting an earth leakage breaker, use the following product
with measures to suppress high-frequency current.
Mitsubishi Electric Corporation: NV series
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Connecting the motor and driver
Be sure to use the dedicated connection cable (sold separately) to connect the motor.
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How to fix the cable
Fix the cable at the positions near the connector so that no stress is applied on the connector part.
A wide clamp is also available to use
When the cable is moved, it causes the connectors to move,
causing stress to apply on the connector part.
Fix using two banding bands or a wide clamp.
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Fixing at one place on each side
•
Fixing at two places on each side
Connector
Connector
Banding band, etc.
Banding band, etc.
When installing the motor on a moving part, use a flexible cable offering excellent flexibility.
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Note on connecting a power supply whose positive terminal is grounded
The data setter connector (CN6) and the connectors for input and output signals (CN5, CN7) on the driver are not
electrically insulated. When grounding the positive terminal of the power supply, do not connect any equipment (PC,
etc.) whose negative terminal is grounded. Doing so may cause the driver and this equipment to short, damaging both.
Installation circumstances
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Grease measures
On rare occasions, grease may ooze out from the gearhead. If there is concern over possible environmental
contamination resulting from the leakage of grease, check for grease stains during regular inspections. Alternatively,
install an oil pan or other device to prevent damage resulting from contamination. Grease leakage may lead to problems
in the user’s equipment or products.
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Note on using in low temperature environment
When an ambient temperature is low, a load torque may increase due to the oil seal or viscosity of grease used in the
gearhead, and the output torque may decrease or an overload alarm may be generated. However, as time passes, the oil
seal or grease is warmed up, and the motor can be operated without generating the overload alarm.
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Apply grease to the hollow output shaft of a hollow shaft flat gearhead.
When using a hollow shaft flat gearhead, apply grease (molybdenum disulfide grease, etc.) on the surface of the load
shaft and inner walls of the hollow output shaft to prevent seizure.
Содержание BX2 Driver Edition Series
Страница 7: ...7 Precautions for use...
Страница 13: ...13 Installation...