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6-64
Drive Control
Current and Torque Limitation (Open-Loop)
Current and Torque Limitation (Closed-Loop)
Brief Description
In open-loop operation there is a current limitation and a torque/force
limitation available in the drive. Both limitations take effect independently
of each other.
See section "Current and Torque Limitation (Closed-Loop)"
Other possibilities of current and torque limitation in open-loop operation:
• limitation of the available peak current or torque by dynamic controller
and motor protection equipment with current limitation loops
• user-side limitation of the available torque or force via stall protection
loop
P-0-0048
velocity command
value
DF000082v02_en.fh7
S-0-0040:
velocity feedback value
P-0-0048:
effective velocity command value
P-0-0442:
actual value torque limit positive (stationary)
P-0-0443:
actual value torque limit negative (stationary)
P-0-4046:
effective peak current
Fig. 6-42:
Principle of current and torque limitation (open-loop)
Operating Principle of Stall Current Loop and Current
Limitation Loop
See also "Functional Description: Stall Protection Loop" in section "Motor
Control: Voltage-Controlled Operation (Open-Loop)"
See also "Functional Description: Current Limitation Loop" in section
"Motor Control: Voltage-Controlled Operation (Open-Loop)"
Brief Description
In closed-loop operation there is a current limitation and a torque/force
limitation available in the drive. Both limitations take effect independently
of each other.
MPH-02, MPB-02, MPD-02
S-0-0040
stall
current
protection
limitation
loop
loop
U/f regulation (open-loop)
P-0-0442
P-0-4046
P-0-0443
torque/
current
force limitation
limitation
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
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