Fuji Electric FRENIC-MEGA, Инструкция по эксплуатации

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Enabling an operation limiting function such as the torque limit and droop control will increase the deviation
caused by a huge gap between the reference speed and detected one. In this case, the inverter may trip interpreting
this situation as a PG error, depending on the running state. To avoid this incident, set the d23 data to "0" (Continue
to run) to prevent the inverter from tripping even if any of those limiting functions is activated.
d24 Zero Speed Control
(Refer to F23.)
d25 ASR Switching Time
(Refer to A42.)
d32, d33 Torque Control (Speed limit 1 and Speed limit 2)
(Refer to H18.)
d41 Application-Defined Control
d41 selects/deselects constant peripheral speed control or synchronous control (simultaneous or standby synchronization).
Constant peripheral speed control suppresses an increase in peripheral speed (line speed) resulting from the increasing radius
of the take-up roll in a winder system.
Synchronous control drives two or more shafts of a conveyer while keeping their positions in synchronization. For details
about synchronous control, refer to the PG Interface Card instruction manual.
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Application-Defined Control (d41)
Data for d41 Function
0 Disable (Ordinary control)
1 Enable (Constant peripheral speed control)
Note:
This control is valid only when "V/f control with speed sensor" or "Dynamic torque vector
control with speed sensor" is selected with F42, A14, b14, or r14 (data = 3 or 4).
2 Enable (Simultaneous synchronization, without Z phase)
3 Enable (Standby synchronization)
4 Enable (Simultaneous synchronization, with Z phase)
[ 1 ] Constant Peripheral Speed Control
In a winder system (e.g., roving frames, wiredrawing machines), if the inverter continues to run the motor at a constant
speed, the take-up roll gets bigger with materials (roving, wire, etc.) and its radius increases so that the winding speed of the
take-up roll increases.
To keep the peripheral speed (winding speed) constant, the inverter detects the winding speed using an encoder and controls
the motor rotation according to the encoder feedback.