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參數(shù)資料
| 型號： | L6515 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | DUAL DC-MOTOR POSITIONING SYSTEM |
| 中文描述： | 雙直流電動(dòng)機(jī)定位系統(tǒng) |
| 文件頁數(shù)： | 2/13頁 |
| 文件大?。?/td> | 197K |
| 代理商： | L6515 |
SYSTEM DESCRIPTION
The L6515 is intended to be used as a microproc-
essorcontrolledpositioning system.
For the motor driver stage only digital operating
bridgesareneededlikeL293E,L298,L6203,L6202.
The system operates in two modes to achieve
high-speed,high-accurancy positioning.
Speed commands for the system originate in the
microprocessor. It is continuouslyupdated on the
motor position by means of pulses from the con-
troller chip, which in turn gets its information from
the encoder. From this basic input, the microproc-
essor computes a 6-bit control word that sets the
systemspeed anddirection dependenton the dis-
tance to travel.
When the motor is stopped and the microproces-
sor orders it to a new position, the system oper-
ates initially in an open-loop configuration as
there is no feedback from the tachometer gener-
ator. Therefore maximumcurrent is fed to the mo-
tor. As maximum speed is reached, the tachome-
ter chip output backs off the processors signal
thus reducing acceleratingtorque. The motor con-
tinues to run at top speed but under closed-loop
control.
As a targetposition is approached,the microproc-
essor lowers the value of the speed-demand
word; this reduces the voltage at the main sum-
ming point, in effect braking the motor. The brak-
ing is applied progressively until the motor is run-
ning at minimum speed.
At that time, the microprocessor orders a switch
to the position mode, and within 3 to 4ms the
power stage drives the motor to a null position,
where it is held by electronic ”detening”.
Symbol
Parameter
Value
Unit
V
S
Supply Voltage
12
V
V
IA
Analog Inputs Voltage
-0.3 to 7
V
V
IL
Logic Inputs Voltage
-0.3 to 7
V
V
O
Open CollectorOutput Current
12
V
I
O
Open CollectorCurrent
10
mA
I
Z
Zener Current
20
mA
T
stg
, Tj
Storage Temperature
-40 to 150
°
C
°
C
T
amb
Operative Ambient Temperature
0 to 70
ABSOLUTE MAXIMUMRATINGS
PIN CONNECTION
(top view)
L
L6515
2/13
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| L652 | 功能描述:SCR模塊 Power Modules,15-42.5 Amp SCR/Diode Module RoHS:否 制造商:Vishay Semiconductors 開啟狀態(tài) RMS 電流 (It RMS):260 A 不重復(fù)通態(tài)電流:4000 A 最大轉(zhuǎn)折電流 IBO:4200 A 額定重復(fù)關(guān)閉狀態(tài)電壓 VDRM:1.6 kV 關(guān)閉狀態(tài)漏泄電流（在 VDRM IDRM 下）:20 mA 開啟狀態(tài)電壓:1.43 V 保持電流（Ih 最大值）: 柵觸發(fā)電壓 (Vgt): 柵觸發(fā)電流 (Igt): 最大工作溫度:+ 150 C 安裝風(fēng)格:Chassis 封裝 / 箱體:INT-A-PAK |
| L-652 | 制造商:Thomas & Betts 功能描述: |
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