MC3PHAC Motorola, MC3PHAC Datasheet - Page 29

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

10. V
MOTOROLA
Fault timeout
Fault timer
V
V
V
Speed in ADC
Setup
Switch in
Reset status
Version
1. The commanded PWM frequency cannot be written until the PWM outputs exit the high-impedance state. The default PWM
2. The PWM output pins remain in a high-impedance state until this parameter is specified.
3. This parameter must be specified before motor motion can be initiated by the MC3PHAC.
4. This is a write-once parameter. The first write to this address will execute normally. Further attempts at writing this
5. The value of this parameter is not valid until the PWM outputs exit the high-impedance state.
6. The data in this field is only valid for one read. Further reads will return a value of $00.
7. See register bit descriptions following this table.
8. Acceleration is an unsigned value with the upper seven bits range of $00 to $7F = acceleration value of 0 to
9. Commanded motor frequency and actual frequency are signed values with the upper byte range of
V
Bus
Bus
Bus
value
value
value
value
Bus
frequency is 15.873 kHz.
parameter will result in an illegal operation response from the MC3PHAC.
127 Hertz/second. The lower nine bits constitute the fractional portion of the acceleration parameter. Its range is $000 to
$1FF which equals 0 to ~1. Therefore, the range of acceleration is 0 to 127.99 Hertz/second.
$00 to $7F = frequency of 0 to 127 Hz. The lower byte is the fractional portion of the frequency. Its range is $00 to $FF
which equals 0 to ~1.
a 5 volt full scale input. The value is equal to the voltage applied to the DC_BUS input pin/V
Bus
decel value
brownout
over voltage
RBRAKE
(7)
(10)
(10)
(10)
(5)
is the voltage value applied to the DC_BUS analog input pin. The analog-to-digital converter is a 10-bit converter with
Name
(7)
Table 6. User Interface Variables for Use with PC Master Software (Continued)
(6), (7)
(10)
Address
$006A
$006D
$00C9
$00AE
$FE01
$EE00
$0064
$0066
$0068
$0095
$0001
Freescale Semiconductor, Inc.
For More Information On This Product,
Read/
Write
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
3-Phase AC Motor Controller
Go to: www.freescale.com
(Bytes)
Size
2
2
2
2
2
2
2
1
1
1
4
Specifies the delay time after a fault
Real-time display of the fault timer
Elapsed fault time = value * 0.262 sec
V
V
V
V
Left justified 10-bit ADC reading of the
Bit field indicating which setup
Bit field indicating the current state of
Indicates cause of the last reset
MC3PHAC version
Fault timeout = value * 0.262 sec
Bus
Bus
Bus
Bus
condition before re-enabling the
motor.
in reduced deceleration.
in the RBRAKE pin being asserted.
an under voltage fault.
in an over voltage fault.
SPEED input pin.
parameters have been initialized
before motion is permitted
the start/stop and forward/reverse
switches
readings below this value result in
readings above this value result
readings above this value result
readings above this value result
Description
REF
* $03FF.
$0000–$FFFF
$0000–$FFFF
$0000–$FFC0
$0000–$03FF
$0000–$03FF
$0000–$03FF
$0000–$03FF
Valid Data
ASCII field
$E0–$FF
$00–$FF
$00–$FF
MC3PHAC/D
Operation
29