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參數(shù)資料
| 型號： | PW-84075P6NEW |
| 英文描述： | Drives (Power Amplifiers)|Magnum Motor Drive?. Half Bridge. Module |
| 中文描述： | 驅(qū)動器（功率放大器）|萬能電機驅(qū)動？。半橋。模塊 |
| 文件頁數(shù)： | 12/23頁 |
| 文件大?。?/td> | 342K |
| 代理商： | PW-84075P6NEW |
12
Data Device Corporation
www.ddc-web.com
PW-8X010P6/8X030P6/8X075P6
D-02/03-0
V
IRSENSE_ABS
(OUTPUT)
V
IRSENSE_ABS
output voltage is the absolute value of the
V
IRSENSE
voltage signal. V
IRSENSE_ABS
is zero volts when there
is no current flowing through the R
SENSE
resistor. It will increase
towards the value of V
IREF
as the current in R
SENSE
approaches
either ± full-scale current (measurement limits of V
IRSENSE
).
V
IRSENSE_ABS
is an open source output and is "wire-OR-able".
When two or more V
IRSENSE_ABS
outputs are "wire-OR-ed", the
highest voltage will appear on the common signal. A typical use
for combining these outputs is for determining when an overload
condition has occurred. The V
IRSENSE_ABS
voltage is scaled by
the input voltage V
IRSENSE
where:
V
IRSENSE_ABS
= 2 x
|
V
IRSENSE
- V
REF
/2
|
OC FAULT OUTPUT
OC FAULT is an active low open drain output that goes active
when the current flowing through R
SENSE
has exceeded the
OC FAULT trip level. This signal is not latched like SC FAULT,
and goes inactive as soon as the over current condition stops.
PW-85010P5, PW-85030P6 AND PW-85075P6
I/O AND OPERATION
PW-85010P6, PW-85030P6 and PW-85075P6 modules can be
added to a motor drive to provide overvoltage protection capa-
bility. The following section describes the PW-85010P6, PW-
85030P6 and PW-85075P6 modules and its features.
10
100
1000
350
375
400
425
450
475
500
525
550
TRIP VOLTAGE, (Vdc)
R
OV Switch ON
OV Switch OFF
V
HYST
Vtrip
1
10
100
1000
10000
0
50
100
150
200
250
300
350
400
TRIP VOLTAGE, (Vdc)
R
OV Switch ON
OV Switch OFF
V
HYST
Vtrip
FIGURE 5A. EXTERNAL OV ADJUST RESISTOR
CONNECTED TO OV_ADJ_HIGH
FIGURE 5B. EXTERNAL OV ADJUST RESISTOR
CONNECTED TO OV_ADJ_LOW
REGEN_STATUS (OUTPUT)
The REGEN_STATUS pin is referenced to V
BUS
-, and indicates the
state of the regen clamp switch (H = on, L = off). An external opto-
isolator input can be connected between REGEN_STATUS and
V
BUS
- to translate this status to logic circuits if desired. The
REGEN_STATUS output is connected to the overvoltage amp
through a 5k
resistor. When the regen clamp switch is active
(inactive), the overvoltage amp sources +15V (0V) through the 5K
resistor. (see FIGURE 1C).
REGEN_CLAMP (OUTPUT)
(REF. R20 ON FIGURES 11 AND 12)
An external load dump resistor is connected between
REGEN_CLAMP and V
BUS
+. When V
BUS
+ reaches the overvolt-
age trip level set by the OV_ADJ, the internal clamp circuit will apply
the load dump resistor from V
BUS
+ to the V
BUS
-, thereby dissipat-
ing the regenerative energy of the bus into the external resistor.
OV_ADJ (INPUT)
The PW-85010P6, PW-85030P6 and PW-85075P6 modules are
internally set for a trip voltage of 400V. The trip point can be
adjusted to a higher or lower voltage by connecting an external
overvoltage adjust resistor R
OV_ADJ
(Ref. R21 on FIGURES 11
and 12)
To set the overvoltage trip point to a voltage above 400 volts con-
nect R
OV_ADJ
between the OV_ADJ and OV_ADJ_HIGH pins.
To set the OV trip point to a voltage below 400 volts connect
R
OV_ADJ
between the OV_ADJ and OV_ADJ_LOW pins. The
value of R
OV_ADJ
for voltages above (below) 400 volts should be
selected based upon FIGURE 5A (5B).
PW-8X075P6, PW-8X030P6 AND PW-8X010P6 TYPICAL OVERVOLTAGE TRIP VS. OV ADJUST SETTINGS
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