Oriental motor BLVM620K-GFS - 3 Precautions for Use

Precautions for use
−6−
3 Precautions for use
This section covers restrictions and requirements the user should consider when using the
BLV
Series.
•
Regeneration energy
When the motor is used in operation such as vertical drive (gravitational operation) or sudden accelerating/
decelerating of an inertia body, regeneration energy may generate. Since the driver has no function to consume
regeneration energy, if the output capacity or overvoltage allowance of the DC power supply is small, the protective
function for the power supply or driver may be activated to stop the motor. When performing these operations, use a
DC power supply or battery that has a large output capacity or overvoltage allowance.
Also, use an electromagnetic brake type motor because there is a risk of falling the moving part in vertical drive such
as elevating equipment.
If the protective function for the power supply or driver is activated, contact your nearest Oriental Motor sales oce.
•
Do not conduct the insulation resistance measurement or dielectric strength test with the motor and
driver connected.
Conducting the insulation resistance measurement or dielectric strength test with the motor and driver connected
may result in damage to the product.
•
Do not use a solid-state relay (SSR) to turn on or o the power supply.
A circuit that turns on or o the power supply via a solid-state relay (SSR) may damage the motor and driver.
•
Notes for power ON/OFF using a mechanical contact
When turning on or o the power supply using a mechanical contact (breaker, electromagnetic switch, relay, etc.), do
so only the positive side (+) of the power supply using the mechanical contact.
Turning on or o the positive side (+) and the negative side (-) of the power supply simultaneously using a mechanical
contact may cause damage to the control circuit or peripheral equipment.
Refer to p.24 for details.
•
Note on connecting a power supply whose positive terminal is grounded
The main power supply input terminal (CN1), I/O signal connector (CN4), communication connectors (CN5/CN6/CN7),
and control power supply input terminal (TB1) of 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 these equipment to short, damaging both.
•
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.
•
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 driven without generating an overload alarm.
•
Apply grease to the hollow output shaft of a hollow shaft at gearhead.
When using a hollow shaft at gearhead, apply grease (molybdenum disulde grease, etc.) on the surface of the load
shaft and inner walls of the hollow output shaft to prevent seizure.
•
The driver uses semiconductor components. So be extremely careful when handling them.
The driver uses components that are sensitive to electrostatic charge. Before touching the driver, turn o the power to
prevent electrostatic charge from generating. If an electrostatic charge is impressed on the driver, the driver may be
damaged.
•
Connecting the motor and driver
For the
BLV510
product, be sure to use the included connection cable to connect the motor and driver.
For the
BLV620
and
BLV640
products, use the included connection cable to extend the wiring distance between the
motor and driver.
•
Sliding noise of electromagnetic brake
The electromagnetic brake motor may cause sliding noise of the brake disk during operation.
There is no functional problem.