MC3PHAC Motorola, MC3PHAC Datasheet - Page 28

• Manufacturer Part Number: MC3PHAC
• Description: 3-Phase AC Motor Controller
• Manufacturer: Motorola

MC3PHAC/D
28
Commanded direction
Commanded PWM
Measured PWM
Commanded PWM
Dead time
Base frequency
Acceleration
Commanded motor
Actual frequency
Status
Voltage boost
Modulation index
Maximum voltage
V
Command reset
Bus
frequency
period
polarity
frequency
voltage
(7)
Name
(2), (3), (4)
(2), (3), (4)
(1)
(3)
(3)
(5), (10)
(3)
Table 6. User Interface Variables for Use with PC Master Software
Address
$00A8
$00C8
$006C
$1000
$1000
$1000
$1000
$0036
$1000
$0060
$0062
$0085
$0091
$0075
$0079
Freescale Semiconductor, Inc.
For More Information On This Product,
Read/
Write
R/W
R/W
R/W
R/W
R/W
W
W
W
W
W
R
R
R
R
R
3-Phase AC Motor Controller
Go to: www.freescale.com
(Bytes)
Size
1
1
1
2
1
1
1
2
2
2
1
1
1
1
2
Determines whether the motor should
Forces the MC3PHAC to perform an
Specifies the frequency of the
The modulus value supplied to the
Specifies the polarity of the MC3PHAC
Example: $50 = Bottom and top PWM
Specifies the dead time used by the
Dead time = Value * 125 ns.
Specifies the motor frequency at which
Acceleration in Hz/sec (7.9 format)
Commanded frequency in Hz.
Actual frequency in Hz. (8.8 format)
Status byte
0 Hz voltage.
Voltage level (motor waveform
Maximum allowable modulation index
DC bus voltage reading
go forward, reverse, or stop
immediate reset
MC3PHAC PWM frequency
PWM generator used by the
MC3PHAC — value is multiplied by
250 ns to obtain PWM period
PWM outputs. This is a write once
parameter after reset.
outputs are positive polarity.
PWM generator.
This is a write-once parameter.
full voltage is applied
(8.8 format)
%Voltage boost = Value/$FF
amplitude percent assuming no bus
ripple compensation)
Modulation index = value/$FF
value
%Maximum voltage = value/$FF
Description
(9)
(8)
(9)
5.3 kHz — $41
10.6 kHz — $42
15.9 kHz — $44
21.1 kHz — $48
Forward — $10
Reverse — $11
$00BD–$05E8
$0000–$7FFF
$0000–$7FFF
$0000–$7FFF
60 Hz — $60
50 Hz — $61
Stop — $20
B + T + $50
B – T – $5C
B + T – $54
B – T + $58
$000–$3FF
Valid Data
$00–$FF
$00–$FF
$00–$FF
$00–$FF
$00–$FF
MOTOROLA
$30