Characteristics of top dressing
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.com
The characteristics of top dressing are:
1 In the late stage of crop growth, when the ability of roots to absorb nutrients from the soil is weakened or when it is difficult to carry out soil topdressing, the root dressing can replenish plant nutrients in time;
2 external top dressing can avoid the adverse effects of soil on some nutrients (such as some trace elements) after fertilizer application, and timely correct crop deficiency syndrome;
3 When the metabolic process in the body is enhanced during the growth period of the crop, the external top dressing can improve the overall function of the crop. The top dressing can be combined with pest control or chemical weeding, and mixed with medicine and fertilizer, but mixed before it can be mixed, otherwise it will affect fertilizer efficiency or efficacy. The effect of application depends on a variety of environmental factors, particularly the climate, wind speed and the time the solution remains on the foliage. Therefore, the top dressing should be carried out in the clear, windless afternoon or evening.