AS380 series elevator integrated drive controller is the new generation of state-of-the-art
elevator-specific control and drive device. With full consideration of the safety & reliability of
elevator;inherent characteristic of elevator operation and specific feature of potential energy load
for elevator, AS380 series elevator integrated drive controller adopted advanced technology of
frequency control of motor speed and intelligent elevator control as well as the integration of
control & drive of elevator to make the further improvement of the product performance,
easy-to-use property and cost efficiency.
Main features
a) Prefect integration of control and drive of elevator. The whole device features compact
structure and small size, fewer connections, which is characterized as high reliability and
easy-to-use property and cost-efficiency.
b) Double 32-bit embedded microprocessor jointly finish the elevator operation and motor drive
control
c) Redundant safety design , double safety protection for control processor and drive processor
to achieve the maximum safety guarantee for elevator travel
d) The design requirements of anti-interference capacity go beyond the highest standard in the
industrial design requirement.
e) All CAN bus communication make the whole system connected easily, data transmitted
strongly, and more reliable.
f) The adoption of the advanced direct landing technology make elevator running more
efficiently
g) The advanced multifunctional elevator operation mode can fully meet various needs of
customers`
h) Advanced group control feature. Not only compatible with the traditional group control mode
of up to 8 units, but also support the new group control of destination floor distribution.
i) The adoption of advanced vector control technology can make the motor speed adjusted well
for the realization of the best elevator comfort.
j) Adapt to both synchronous motor and asynchronous motor.
k) Newly-developed none-load sensor-activated compensation technology provides excellent
starting comfort to elevator even if no counterweight is installed.
l) To adopt incremental ABZ encoder to realize the synchronized control of motors. To adopt the
none-load sensor-activated compensation technology to achieve the excellent start-up
comfort.
m) New PWM dead band compensation technology can effectively reduce the motor noise and
loss of machine.
n) Dynamic PWM carrier modulation technology can effectively reduce the motor noise.
o) Auto-tuning phase of synchronous motor without encoder
p) Asynchronous motor is not required for motor parameter acquisition process once the motor
parameter is set correctly. The convenient static motor parameter acquisition process is
available If is impossible to acquire the exact motor parameter on site. So there is no need to
hoist the car and etc in this way.
q) The hardware is the 6th generation of module with the junction temperature resistance up to
175℃. Low loss for switch and connection to ensure the long use life.
STEP inverter,elevator inverter,elevator control system,STEP control system Suzhou Keffran Parts Co.,ltd , https://www.keffran-elevatorsmart.comThe Seal of the Bearing Itself
Bearings are essential components in many mechanical systems, and their performance is significantly influenced by the sealing mechanism. While external sealing devices can help prevent contaminants from entering, they often add complexity to the design, increasing the axial space required and making maintenance more challenging. Additionally, the effectiveness of these seals is dependent on factors such as the shaft diameter, machining accuracy, and the alignment of the housing.
Sealed bearings, on the other hand, offer a more integrated solution. They not only provide excellent protection against dust and foreign particles but also eliminate the need for frequent lubrication, reducing maintenance costs and improving overall efficiency. In applications where compact design and high sealing standards are critical, sealed bearings are highly recommended.
The seal of the bearing itself can be classified into two main types: contact and non-contact seals. Contact seals involve direct contact between the seal and the rotating part, while non-contact seals rely on gaps or other mechanisms to prevent contamination.
Contact seals can further be divided into radial and axial types based on their arrangement. Radial seals are positioned perpendicular to the axis of rotation, while axial seals are aligned parallel to it. In terms of structure, contact seals can be single-lip or double-lip, with the latter offering enhanced sealing performance.
Non-contact seals typically include dust caps and rubber seals. Dust caps have larger gaps and are mainly used for basic dust protection, whereas rubber seals provide tighter sealing by filling the gap. These types are often used in less demanding environments.
For contact seals, rubber lips are commonly used. These seals make direct contact with the rotating component through a certain amount of friction, ensuring effective dust resistance. However, this type of seal has a lower maximum speed and generates higher friction torque compared to non-contact alternatives.
In summary, choosing the right type of seal depends on the specific application requirements, including environmental conditions, space constraints, and performance expectations. Whether using external seals or sealed bearings, proper sealing is crucial for extending the lifespan and reliability of the bearing system.
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Source: China Bearing Network | Time: 2013-06-30