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參數(shù)資料
| 型號： | PW-83075P6-900 |
| 廠商： | DATA DEVICE CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | UNIVERSAL MOTOR CONTROLLER, 200 A, XMA |
| 文件頁數(shù)： | 23/24頁 |
| 文件大?。?/td> | 578K |
| 代理商： | PW-83075P6-900 |
8
Data Device Corporation
www.ddc-web.com
PW-8X075P6
C-05/02-250
INTRODUCTION
The PW-8X075P6 Magnum family is a series of universal modu-
lar half-bridge motor drives intended for use with brush, brush-
less DC and AC induction motors in aerospace applications.
The PW-8X075P6 contains an isolation barrier between the
power and control stages, which attenuates ground noise gener-
ated from the high speed, high power switching. All signals from
the control to the power sections are isolated from power and
ground of the other section. This eliminates false triggering of the
input signals and any need for creative grounding schemes. The
isolation barrier also allows the user to operate the output stage
from either unipolar or bipolar power supplies without level shift-
ing the input signals. A built in power supply located in the con-
trol stage provides power to all electronics in the power stage.
This eliminates the need for refresh cycles or external power
supplies for the gate drive circuitry and allows switching duty
cycles from 0 - 100%. (Reference FIGURES 1A, 1B, 1C)
The output power transistors on all modules are protected from a
short circuit applied to the output pin. When a short circuit condition
is detected, the output transistors are shut down and a flag SC
FAULT is made active (logic low (L)) indicating a short has occurred.
The PW-84075P6 contains additional current sensing circuitry that
can monitor either motor current or DC bus current. The output volt-
age of the current sensing circuit can be used as a feedback signal
in a servo drive to create a torque loop (Reference FIGURE 1B).
All output power transistors can be protected from regenerative
bus over-voltage when utilizing dynamic braking with the addi-
tion of one PW-85075P6 module. This module contains an over-
voltage switch that is enabled when an over-voltage condition is
detected. This switch is normally wired to an external (user sup-
plied, application specific) load dump resistor to provide a load
across the high voltage bus when over-voltage is detected.
During an over-voltage condition, the status flag REGEN_STA-
TUS is active (logic high (H)) indicating an over-voltage condi-
tion is occurring. (Reference FIGURE 1C)
PW-8X075 I/O AND OPERATION
UPPER, LOWER (INPUTS)
UPPER and LOWER are active high CMOS Schmitt-trigger
inputs that control the gate drives of the output transistors (TTL
compatibility requires external 10K pull-up resistors). Each input
is electrically isolated from the output. A dead band, as shown
in FIGURE 4, between turn off and turn on of UPPER and
LOWER inputs is necessary to prevent output shoot through
conduction.
SC FAULT (OUTPUT)
SC FAULT is an active low open collector output signal that indi-
cates when the output of the module has experienced a short cir-
cuit
condition.
SC
FAULT
will
remain
active
until
DISABLE/RESET is made active (L). The signal is inactive (high
impedance) during normal operation. See SHORT CIRCUIT
PROTECTION for more detail.
DISABLE / RESET (INPUT)
DISABLE / RESET is an active low CMOS Schmitt-trigger input.
When DISABLE / RESET is held active it does two things: 1.)
Resets the SC FAULT (if it was active), and 2.) Disables the out-
put (makes the output high impedance). If this line is used sole-
ly to clear SC FAULT then it only needs to be pulsed active. The
duration of the DISABLE / RESET active pulse must be at least
tpw.reset to ensure that SC FAULT is cleared properly. When this
line is inactive, the OUTPUT is allowed to respond to the other
control lines of the module (UPPER, LOWER, SLEEP_MODE).
Note: TTL compatibility requires an external pull-up resistor.
AUTO RESET (INPUT)
AUTO RESET is an active low (L) input. When AUTO RESET is
tied to SC FAULT the protection circuit will reset automatically
after the short circuit fault has occurred, and a delay period,
tcycle.auto, has expired. This automatic reset enables the output
to respond to the input commands. See SHORT CIRCUIT PRO-
TECTION for more detail.
SLEEP_MODE (INPUT)
SLEEP_MODE is an active high input that turns the internal
power supply off. A logic low (L) enables the power supply and
allows the motor drive to operate normally.
A logic high (H) on the SLEEP_MODE input disables the internal
power supply, disabling the motor drive output. No damage will
occur to the motor drive during turn on or turn off of the power
supply. Additionally, no special power up sequence is required.
The UPPER and LOWER logic gate driver inputs should not be
active while transitioning in and out of sleep mode. If the UPPER
tdead
50%
UPPER
LOWER
50%
tdead
FIGURE 4. PW-8X075P6 DEAD BAND REQUIREMENT
相關(guān)PDF資料 |
PDF描述 |
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| PW-83075P6-800 | UNIVERSAL MOTOR CONTROLLER, 200 A, XMA |
| PW-84075P6-900 | UNIVERSAL MOTOR CONTROLLER, 200 A, XMA |
| PW-85075P6-800 | UNIVERSAL MOTOR CONTROLLER, 200 A, XMA |
| PW-85075P6-300 | UNIVERSAL MOTOR CONTROLLER, 200 A, XMA |
| PW-83075P6-420 | UNIVERSAL MOTOR CONTROLLER, 200 A, XMA |
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