Programming
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D Page
D-47
8
9
10
A
B
C
D
E
1
2
3
4
5
6
7
Parameter Descriptions
SPEED FBK %
PREF: 70.06 Default: —.xx % Range: —.xx %
This parameter changes according to the CONTROL MODE (DRIVE CONFIG function block):
• In CLOSED-LOOP VEC mode the parameter shows the mechanical speed of the motor shaft as a percentage of the user
maximum speed setting (MAX SPEED in the REFERENCE function block) as calculated from the motor speed feedback.
• In SENSORLESS VEC mode the parameter shows the calculated mechanical speed of the motor shaft as a percentage of
the user maximum speed setting (MAX SPEED in the REFERENCE function block).
• In VOLTS / Hz mode, the parameter shows the electrical drive output frequency as a percentage of the user maximum
speed setting (MAX SPEED in the REFERENCE function block).
• In PMAC control mode, the parameter shows the mechanical speed of the motor shaft.
TORQUE FEEDBACK
PREF: 70.10 Default: —.xx % Range: —.xx %
In PMAC Motor Control Mode, this shows the estimated motor torque as a percentage of the PERM TORQUE in the PMAC
MOTOR 1 function block.
FIELD FEEDBACK
PREF: 70.11 Default: —.xx % Range: —.xx %
Designed for all Motor Control Modes, except PMAC control mode (in PMAC Motor Control Mode, the value is always 0).
A value of 100% indicates the motor is operating at rated magnetic flux (field).
MOTOR CURRENT %
PREF: 70.12 Default: —.xx % Range: —.xx %
In PMAC Motor Control Mode, this diagnostic shows the level of rms line current being drawn from the drive as a
percentage of the PERM CURRENT in the MOTOR PMAC 1 function block.
MOTOR CURRENT A
PREF: 70.13 Default: —.xx A Range: —.xx A
In PMAC Motor Control Mode, this diagnostic shows the level of rms line current in Amps being drawn from the Drive.
STACK RATING A
PREF: 70.19 Default: —.x A Range: —.x A
This diagnostic indicates the stack rating in Amps. This reduces as a function of pwm switching frequency.
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