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參數(shù)資料
| 型號： | AS8410 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 運動控制電子 |
| 英文描述： | PWM DC Motor Regulator |
| 中文描述： | BRUSH DC MOTOR CONTROLLER, PDSO16 |
| 封裝： | SOIC-16 |
| 文件頁數(shù)： | 17/19頁 |
| 文件大?。?/td> | 601K |
| 代理商： | AS8410 |
PWM DC Motor Regulator – Data Sheet
AS8410
Rev. 1.0, December 2000
page
17
of
19
For all detected failures an adequate failure handling procedure is integrated to fully protect the
motor regulator module. This failure procedures works without interaction of the controlling
μ
P
and so the AS8410 can also be used to develop regulator modules without
μ
P. Nevertheless
the most important failures are reported in operating mode 1 (OM1) by pull down the set value
input pin
IN
with a current source (3 mA … 10 mA).
4.1.8.1
The principle of the load circuit (motor and power FET) failure detection and handling procedures
is the following:
a) Motor failure detection principle: The motor current at the high side of the motor and the
average value of the motor voltage is permanently measured. In this way the actual
motor working point is monitored and permanently compared with the normal motor
characteristic. This comparison delivers then the different motor or power FET failures.
b) Failure handling procedures: After the detection of any motor or power FET failure, the
control of the motor is taken by internal settings (no longer by the input set value
IN
) to
protect the whole system.
After a predefined time the AS8410 restarts the control by the input set value again and
monitors the motor and power FET.
This procedure is repeated up the failure disappears (or the controlling
μ
P is executing
a protection reaction by itself).
Motor Failures
The main internal setting values and reactions of the different load circuit failures in OM1 are
listed here below:
1. Over current or short circuit of the motor
Handling:
a) switch off the motor immediately (delay < 1
μ
s)
b) report of the failure at the pin
IN
c) check the failure condition again after a waiting time
d) reuse the input set value, if the over current condition is over
2. No load of the motor
Handling:
a) report of the failure at the pin
IN
b) internal setting of the set value to 75 %
c) reuse the input set value, if the no load condition is over
3. Open wire (motor or power FET line)
Handling:
a) report of the failure at the pin
IN
b) internal setting of the set value to 75 %
c) reuse the input set value, if the open wire condition is over
4. Short-circuited power switch (power FET)
Handling:
a) report of the failure at the pin
IN
b) internal setting of the set value to 75 %
c) reuse the input set value, if the short-circuit condition is over
5. Mechanically blocked motor
Handling:
a) report of the failure at the pin
IN
b) pull down the motor
c) check the failure condition again after a waiting time
d) reuse the input set value, if the blocked motor condition is over
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS8412 | HIGH PERFORMANCE AUTOMOTIVE SONAR INTRUSION |
| AS8413 | HIGH PERFORMANCE AUTOMOTIVE SONAR INTRUSION |
| AS8846 | Programmable PWM DC Motor Driver / Controller |
| AS8F128K32 | 128K x 32 FLASH FLASH MEMORY ARRAY |
| AS9C25128M2036L-166PI | 2.5V 256/128K X 36 Synchronous Dual-port SRAM with 3.3V or 2.5V interface |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS8412 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:HIGH PERFORMANCE AUTOMOTIVE SONAR INTRUSION |
| AS8413 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:HIGH PERFORMANCE AUTOMOTIVE SONAR INTRUSION |
| AS8424-A | 制造商:Coilcraft Inc 功能描述:DSL transformer, for AD20MSP910/918, not RoHS |
| AS8425-A | 制造商:Coilcraft Inc 功能描述:DSL transformer, for Motorola MC145660, not RoHS |
| AS8426-A | 制造商:Coilcraft Inc 功能描述:DSL transformer, for Alcatel MTK-20140, not RoHS |
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