Rockwell Automation 8720MC Drives Integration Manual - Manual (Page 176)

Publication 8720MC-IN002A-EN-P — December 2002
C-64 Programming Parameters
Name: AnaInput 1 Offse Data Type: Signed Integer R/W
Parameter No.
693
File:
I/O Interface
Group:
Analog Inputs Description: Parameter 693 provides a means of offsetting analog input 1. This parameter is used to assign an
A/D offset to “AnaInput1_Value”, parameter 691, which is the analog input tied to the 8720MC physical address
of: connector P1, row 2, terminals 16 and 17. This allows the user to apply an offset to an external analog input
which is linked to a variable within the 8720MC Drive. Analog Input 1 is used as the motion controller reference
command. Parameter 693 contains an offset variable in % which may be used to adjust the drive for zero speed or
zero torque when the motion controllers reference is 0 volts. This offset may be auto tuned if “auto Offset” is
selected in parameter 546
Default:
0.00 Length
2 bytes Minimum/Maximum
Min.
≥ -100.00
Max. ≤ +100.00
Scaling Resolution
1=.01% Units
%
Name: AnaInput 2 Offse Data Type: Signed Integer R/W
Parameter No.
694
File:
I/O Interface
Group:
Analog Inputs Description: Parameter 694 provides a means of offsetting analog input 2. This parameter is used to assign an
A/D offset to “AnaInput1_Value”, parameter 692, which is the analog input tied to the 8720MC physical address
of: connector P1, row 2, terminals 16 and 17. This allows the user to apply an offset to an external analog input
which is linked to a variable within the 8720MC Drive. Analog Input 2 is only used as the manual analog velocity
reference. Parameter 694 contains offset factor in % which may be used to adjust the drive for zero speed when
the manual analog reference is at 0 volts.
Default:
0.00 Length
2 bytes Minimum/Maximum
Min.
≥ -100.00
Max.
≤ +100.00
Scaling Resolution
1=.01% Units
%
Name: Analog_Vel_Scale Data Type: Signed Integer R/W
Parameter No.
695
File:
I/O Interface
Group:
Analog Inputs Description: Parameter 695 provides a means of scaling analog input 1. This parameter is used to assign a
scale factor to “AnaInput1_Value” which is the analog input tied to the 8720MC physical address of: connector
P1, row 2, terminals 14 and 15. This allows the user to apply a scale factor to an external analog input which is
linked to a variable within the 8720MC Drive. When the drive is configured for velocity mode, parameter 32 for
parameter set 0, parameter 695 parameter contains the velocity scale factor in rpm/10 volt. For example, if the
incoming analog voltage full scale range is +/- 8 volts and the desired max rpm range is +/- 6000 rpm, then the
scale factor would be 6000 *10/8 or 7500 rpm/10 volts. This parameter should not generate a speed requirement
greater than the maximum speed of the motor, parameter 113. For applications were torque mode is used,
parameter 695, Analog Input 1 is always scaled to 25% (2.5 volts) = 100% rated torque. See parameter 32 for
mode setting.
Default:
1000 Length
2 bytes Minimum/Maximum
Min.
≥ -30000
Max. ≤ +30000
Scaling Resolution
1 Units
rpm/100%