mc3phacvp Freescale Semiconductor, Inc, mc3phacvp Datasheet - Page 24

• Manufacturer Part Number: mc3phacvp
• Description: Mc3phac Motor Control Unit
• Manufacturer: Freescale Semiconductor, Inc

Operation
Each bit variable listed in
24
Address: $00C8
ENERGIZED
FAULT TRIP
CHANGING
RESISTIVE
EXTERNAL
FORWARD
VOLTAGE
VOLTAGE
Reset
MOTION
MOTOR
UNDER
SPEED
BRAKE
OVER
TRIP
TRIP
Field
W
R
6
5
4
3
2
1
0
U
7
SPEED CHANGING Bit — This read-only bit indicates if the motor is at a steady speed or if it is
accelerating or declerating.
0 Motor is at a steady speed.
1 Motor is accelerating or decelerating.
FORWARD MOTION Bit — This read-only bit indicates the direction of the motor. It also indicates
if the motor is stopped.
0 Motor is rotating in the reverse direction.
1 Motor is rotating in the forward direction. If this bit is a logic 1 and the actual frequency (location
MOTOR ENERGIZED Bit — This read-only bit indicates PWM output activity
0 The PWM outputs are inactive or the bottom PWM outputs are in the pre-charge cycle.
1 All PWM outputs are active.
RESISTIVE BREAK Bit — This read-only bit indicates the state of the RBRAKE output pin
0 The RBRAKE output pin is inactive and no braking is in progress.
1 The RBRAKE output pin is active. Braking is in progress.
EXTERNAL FAULT TRIP Bit — This read-only bit indicates a FAULT has occurred resulting from
a logic 1 applied to the FAULTIN pin.
0 A logic 0 is applied to the FAULTIN pin and no FAULT timeout is in progress.
1 A logic 1 was applied to the FAULTIN pin and a FAULT timeout is still in progress.
OVER-VOLTAGE TRIP Bit — This read-only bit indicates if the voltage at the DC_BUS pin
exceeds the preset value of V
0 The voltage applied to the DC_BUS pin is less than the preset value of V
1 The voltage applied to the DC_BUS pin has exceeded the preset value of V
UNDER-VOLTAGE Bit — This read-only bit indicates if the voltage at the DC_BUS pin is less
than the present value of V
0 The voltage applied to the DC-BUS pin is greater than the preset value of V
1 The voltage applied to the DC_BUS pin is less than the present value of V
$0085 and $0086) is 0, the motor is stopped.
a FAULT timeout is not in progress.
and a FAULT timeout is still in progress.
and a FAULT timeout is not in progress.
and a FAULT timeout is still in progress.
= Unimplemented or Reserved
CHANGING
SPEED
Table 6
0
6
MC3PHAC Monolithic Intelligent Motor Controller, Rev. 2
Table 7. Status Register Field Descriptions
FORWARD
is defined in
MOTION
1
5
Figure 14. Status Register
Bus
Bus
brownout located at address $0066 and $0067.
ENERGIZED
over voltage located at address $0068 and $0069.
Figure
MOTOR
0
4
14,
Description
U = Unaffected
RESISTIVE
Figure
BRAKE
3
0
15,
Figure
FAULT TRIP
EXTERNAL
U
2
16, and
VOLTAGE
Freescale Semiconductor
OVER
Figure
TRIP
Bus
0
1
Bus
Bus
Bus
over voltage and
under voltage
under voltage
17.
over voltage
VOLTAGE
UNDER
TRIP
0
0