Rockwell Automation 8720MC Drives Integration Manual - Manual (Page 164)

Publication 8720MC-IN002A-EN-P — December 2002
C-52 Programming Parameters
Name: System_Accel_0 Data Type: Integer R/W
Parameter No.
523
File:
Servo Loop
Group:
Group 0 Description: The 8720MC supports 8 sets of Servo Parameters (0-7). The SERCOS link, the I/O interface or
SCANport can select which set of parameters is to be enabled. Group 0 is the default group. Parameter 523 is
used to provide the drive with the required motor acceleration that will produce 100% torque for Servo group 0.
This value should be derived by the drive via auto tuning with the desired load connected. It will effect the stability
of the velocity loop. This parameter is used by the drive to translate acceleration commands (output of the velocity
regulator) to torque commands. The data is represented by an unsigned integer.
Default:
65535 Length
2 bytes Minimum/Maximum
Minimum Input:
≥ 0
Maximum Input: ≤ 65535
Scaling Resolution
1 = 1 rad/sec2 Units
rad/sec2
Name: Mtr_Elec_Angle Data Type: Signed Decimal R
Parameter No.
525
File:
Mtr/Drive/Fdbk
Group:
Motor Data Description: This parameter is the present electrical angle (theta) of the motor shaft.
Default:
0 Length
2 bytes Minimum/Maximum
Minimum Input:
≥ 0
Maximum Input:
≤ 65535
Scaling Resolution
1 = 0.001 rads Units
radians
Name: Hi_Wind_Enable Data Display: Bit Flag R, Link
Parameter No.
526
File:
I/O Interface
Group:
Event Links Description: The 8720MC drive support dual (wye - Delta) wound motors. The motor is connected wye for low
speed and delta for high speed. These motors require switching via external contactors. Parameter 526 can be
linked to a digital output relay contact by writing it’s parameter number into a digital relay output word. When this
I/O link is created the relay output contact will close whenever the high winding is selected. Also the low winding
output will be disabled since both cannot be on concurrently.
Default:
0.0 Length
2 bytes Minimum/Maximum
Min. 0.0
Max. 1.0 Scaling Resolution
N/A Units
N/A
Name: Lo_Wind_Enable Data Display: Bit Flag R, Link
Parameter No.
527
File:
I/O Interface
Group:
Event Links Description: The 8720MC drive support dual (wye - Delta) wound motors. The motor is connected wye for low
speed and delta for high speed. These motors require switching via external contactors. Parameter 527 can be
linked to a digital output relay contact by writing it’s parameter number into a digital relay output word. When this
I/O link is created the relay output contact will close whenever the low winding is selected. Also the high winding
output will be disabled since both cannot be on concurrently.
.
Default:
0.0 Length
2 bytes Minimum/Maximum
Min. 0.0
Max. 1.0 Scaling Resolution
N/A Units
N/A