50
Digitax HD M753 Control User Guide
Issue Number: 3
6.4.5 Monitoring
Open-loop
Pr
00.010
(
05.004
) indicates the value of motor speed that is estimated
from the following:
02.001
Post Ramp Reference
00.042
Number Of Motor Poles
RFC-A / RFC-S
Pr
00.010
(
03.002
) indicates the value of motor speed that is obtained
from the speed feedback.
Open-loop and RFC-A
Pr
00.011
displays the frequency at the drive output.
RFC-S
Pr
00.011
displays the position of the encoder in mechanical values of 0
to 65,535. There are 65,536 units to one mechanical revolution.
Pr
00.012
displays the rms value of the output current of the drive in
each of the three phases. The phase currents consist of an active
component and a reactive component, which can form a resultant
current vector as shown in the following diagram.
The active current is the torque producing current and the reactive
current is the magnetizing or flux-producing current.
When the motor is being driven below its rated speed, the torque is
proportional to [
00.013
].
6.4.6 Jog reference, Ramp mode selector, Stop and
torque mode selectors
Pr
00.014
is used to select the required control mode of the drive as
follows:
Pr
00.015
sets the ramp mode of the drive as shown below:
0: Fast ramp
Fast ramp is used where the deceleration follows the programmed
deceleration rate subject to current limits. This mode must be used if a
braking resistor is connected to the drive.
1: Standard ramp
Standard ramp is used. During deceleration, if the voltage rises to the
standard ramp level (Pr
02.008
) it causes a controller to operate, the
output of which changes the demanded load current in the motor. As the
controller regulates the link voltage, the motor deceleration increases as
the speed approaches zero speed. When the motor deceleration rate
reaches the programmed deceleration rate the controller ceases to
operate and the drive continues to decelerate at the programmed rate.
If the standard ramp voltage (Pr
02.008
) is set lower than the nominal
DC bus level the drive will not decelerate the motor, but it will coast to
rest.
00.010 {05.004}
Motor Rpm
RO
Bit
US
OL
±180000 rpm
00.010 {03.002}
Speed Feedback
RO
Num
FI
ND
NC
PT
RFC-A
VM_SPEED rpm
RFC-S
00.011 {05.001}
Output Frequency (OL)
00.011 {03.029}
P1 Position (RFC)
RO
Num
FI
ND
NC
PT
OL
VM_SPEED_FREQ_
REF Hz
RFC-A
RFC-S
0 to 65535
00.012 {04.001}
Current Magnitude
RO
Bit
FI
ND
NC
PT
OL
0.000 to
VM_DRIVE_CURRENT_
UNIPOLAR A
RFC-A
RFC-S
Active
current
Total current
Magnetising current
00.013 {04.002}
Torque Producing Current
RO
Bit
FI
ND
NC
PT
OL
VM_DRIVE_CURRENT A
RFC-A
RFC-S
00.014 {04.011}
Torque Mode Selector
RW
Num
US
OL
0 or 1
0
RFC-A
0 to 5
0
RFC-S
Setting
Open-Loop
RFC-A/S
0
Frequency control
Speed control
1
Torque control
Torque control
2
Torque control with speed override
3
Coiler/uncoiler mode
4
Speed control with torque feed-
forward
5
Bi-directional torque control with
speed override
00.015 {02.004}
Ramp Mode Select
RW
Txt
US
OL
Fast (0), Standard (1),
Std boost (2)
Standard (1)
RFC-A
Fast (0), Standard (1)
Fast (0)
RFC-S
Содержание Digitax HD M753 EtherCAT
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