Bosch PIN8 N1 Guia de Resolução de Problemas Página 248

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6-36 Drive Control MPH-02, MPB-02, MPD-02
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
Pertinent Diagnostic Messages
F8079 Velocity limit S-0-0091 exceeded
Functional Description
When the drive is running in open-loop operation (open-loop U/f control),
the preset velocity command value can be smoothed by a fine interpolator
via 2 steps.
S-0-0037
P-0-0048
P-0-0556
S-0-0091
DF000113v01_en.fh7
command value
fine interpolation
Bit 0
velocity command
value
+
S-0-0037: additive velocity command value
P-0-0048: effective velocity command value
P-0-0556: control word of axis controller
Fig. 6-24: Fine interpolation of the velocity command value
Note: The fine interpolator can be activated via bit 0 in parameter
P-0-0556, Control word of axis controller.
The physical data for velocity control have the following units:
velocity data: rpm or mm/min
acceleration data: (rpm)/controller clock or (mm/min)/contr. clock
torque data: Nm or N
Note: The fine interpolator can be activated via bit 0 in parameter
P-0-0556, Control word of axis controller.
The output variable of the fine interpolator (P-0-0048) is used as the input
variable for the subsequent open-loop U/f control which is described in
the section "Motor Control: Voltage-Controlled Operation".
Diagnostic and Status Messages
The actual velocity value generated internally via the stall protection loop
is monitored with regard to the limit value of 1.125 * S-0-0091 (bipolar
velocity limit value). When the limit value is exceeded, the following error
message is generated:
F8079 Velocity limit S-0-0091 exceeded
Fine Interpolator
Units of the Processed Data
Open-Loop U/f Control
Monitoring the Velocity Limit
Value
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