- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382327 > MLX90804 (Electronic Theatre Controls, Inc.) Speed regulator for universal motors PDF資料下載
參數(shù)資料
| 型號： | MLX90804 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Speed regulator for universal motors |
| 中文描述： | 調(diào)速電機(jī)的普及 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 147K |
| 代理商： | MLX90804 |
MLX90804
Speed regulator for universal motors
MLX90804 Speed regulator for universal motors Page 8 Rev 1.0 30/Jun/00
Speed Set Ramping
The SETP integrator is built around a 8 bit counter
and guarantees a smooth transition when changing
the speed setting. There is a comparator between
SETP and IP. If SETP changes then the comparator
enables the IP-counter until IP gets equal to SETP.
The clock, which defines the rate of change, can be
defined for up and down counting independently, and
equals Fclkip= 102.3KHz/(128*(UPR[4:0]+1)) in case
of counting up.
Since the value for the desired speed is 10 bit wide,
and the counter only 8, the setpoint ramp speed from
the table is effectively multiplied by 4.
FLL
A frequency locked loop circuit is implemented to
obtain a master frequency (approximately 100KHz )
from a free running on-chip oscillator. Both FLL and
frequency multiplier have the same functional blocks,
but the FLL uses the AC line frequency as his
reference.
Overload shutoff feature
625 ms after starting the motor (i.e. selecting a
speed setting different from 0 rpm) the following
function will be enabled: if the speed of the motor
gets lower then a programmable value SLIM for
longer then 320 ms, the motor speed is
permanently set to 0 rpm. As a consequence the
first possible timeout to recognize a blocked motor
after start will be approximately 1 sec.
This state can only be left by disconnecting the
power from the electronic circuit.
Overspeed shutoff feature
If the speed of the motor gets higher then a
programmable value SLIMA for longer than 320ms,
the selected speed is permanently set to 0 rpm.
This state can only be left by disconnecting the
power from the electronics.
Firing
The PI regulator gives an ignition angle IGN. The
resolution is 10 us. The firing circuit compares the
ignition point with a maximum and minimum
allowed angle MIN and MAX. MAX corresponds to
Kp
u
1
x
n
x
1
SUB
A
D
U/D
Reset
Q
1
Q
4
Load
Carry out
ENB
Preload Counter
P=Q
P>Q
Q
P
COMP
EQU
REAL
IP
ERR
Ki
u
1
x
n
x
1
SUM
DELAY
ERRP
u
1
x
n
x
1
SUM
ERRI
u
1
x
n
x
1
SUB
ERRPI
MIN_ANGLE
IGN
SETP
START
VZC
SSE1
SSE2
Ki
0
0
1/ 8
0
1
1/ 16
1
0
1/ 32
1
1
1/ 64
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MLX90804SA-X | Speed regulator for universal motors |
| MM1065 | Ultra-Low Power Consumption Low-Saturation Three-Pin Regulators with On/Off Pin |
| MM1065M | Ultra-Low Power Consumption Low-Saturation Three-Pin Regulators with On/Off Pin |
| MM1065T | Ultra-Low Power Consumption Low-Saturation Three-Pin Regulators with On/Off Pin |
| MM1165M | Ultra-Low Power Consumption Low-Saturation Three-Pin Regulators with On/Off Pin |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MLX90804SA-X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Speed regulator for universal motors |
| MLX90805 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Intelligent Triac Controller |
| MLX90805S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Intelligent Triac Controller |
| MLX90805SA-X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Intelligent Triac Controller |
| MLX90805SL-X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Intelligent Triac Controller |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。