25
Loop Enable (212, Read-Only)
The
Loop Enable
parameter determines if the Velocity and Control Loops are active.
Loop
Enable
is controlled by the
Standstill Logic
and Ramp Enable.
7.6 Velocity Loop Block
The Velocity Loop uses a closed loop Proportional-Integral (PI) loop to maintain desired speed. The
Loop Enable output from the Zero Speed Logic Block determines when the PI loop is active.
Figure 13
Velocity Demand (189, Read-Only)
The
Velocity Demand
is the main input to the velocity loop.
Independent Speed Scales (494)
When this parameter is True, the max speed scaling is set by two separate parameters,
Forward Max Speed
and
Reverse Max Speed
. When False, both the forward and reverse
speed levels are adjusted by the
Forward Max Speed
.
Forward Max Speed (190)
The
Forward Max Speed
parameter scales the
Velocity Demand
signal for the forward
direction. Thus, this parameter sets the maximum allowable speed of the drive in the forward
direction. When
Independent Speed Scales
is False, this parameter sets the maximum
speed for the reverse direction as well.
Reverse Max Speed (191)
When
Independent Speed Scales
is True, the
Reverse Max Speed
parameter scales the
Velocity Demand
signal for the reverse direction. Thus, this parameter sets the maximum
allowable speed of the drive in the reverse direction.
Final Velocity Demand (129, Read-Only)
The
Final Velocity Demand
equates to the
Velocity Demand
after it has been scaled by the
Forward Max Speed Scale
or
Reverse Max Speed Scale
adjustments. The
Final Velocity
Demand
level is the desired speed reference for the PI loop.
Armature Feedback (AFB, 194, Read-Only)
Armature Feedback
uses the motor voltage as a velocity feedback.
AFB
must be selected if
Summary of Contents for Elite Pro EPN020-000
Page 10: ...10 Figure 4 ...
Page 80: ...80 Prints ...
Page 81: ...81 ...
Page 82: ...82 ...
Page 83: ...83 ...
Page 85: ...85 ...
Page 88: ...88 ...
Page 89: ...89 ...
Page 90: ...90 ...
Page 91: ...91 ...
Page 92: ...92 ...
Page 93: ...93 ...
Page 94: ...94 ...
Page 95: ...95 ...
Page 96: ...96 ...
Page 97: ...97 ...
Page 98: ...98 ...
Page 99: ...99 ...
Page 100: ...100 ...
Page 101: ...101 ...
Page 102: ...102 ...
Page 103: ...103 ...
Page 104: ...104 ...
Page 105: ......
Page 106: ...106 PRO SOFT ...
Page 107: ...107 WARE BLOCK DIAGRAM ...
Page 108: ...108 ...