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NTT 240/460
Operation mode
Installation and user guide
Rev: 4.0
6.15.2 Sensored speed control
Operation conditions:
•
control is available with any supported motor type and with any supported feedback (also Hall sensor feedback
is recommended for low performance application only).
•
main speed reference can be analog, inside or frequency reference and fieldbus reference available for any
operation mode.
•
auxiliary speed reference or torque limit reference are available for I/O and Modbus RTU operation mode only.
•
about regulation, speed/current regulators are available.
•
brake motor management is available.
•
trapezoidal ramps and “S”-ramps are available.
During speed control with torque limit, the percentage of set torque is reffered to motor parameter called ‘
Nominal
Current’
.
The following image shows an example of setting of a speed control, with torque limit, working in Modbus RTU
mode, then you can set:
•
the reference type: analog/inside/frequency/tab. selection for I/O and Modbus mode or or fieldbus prameters (in
the case shown in picture, speed and torque reference are analog).
•
full scale for analog analog inputs.
•
optimal PID regulators for application.
•
desired digital I/O.
!
In order to obtain a correct operation, please ensure to perform Factors calculation procedure: please see
.
See
“Ch. 5 Wiring and connections” pag. 26
for more details about connectors:
»
J5-6 connector
: for feedback connection, see:
1.
“6.03.2.e Incremental encoder with/without HALL sensors” pag. 57
2.
“6.03.2.f HALL sensors only” pag. 57
3.
“6.03.2.g SSI absolute encoder” pag. 58
4.
»
J3 and J7-8-9 connector
:
1. provide the main speed reference in the differential input (pins 1-2 of J9) or the frequency reference (pins
1 to 6 of J7) or fill the target speed table-selection. For details about input reference, please see
.
2. provide the auxiliary reference for torque limit control or for second speed reference (pin 3-4 of J9). For
details about input reference, please see
“6.09.2 Auxiliary references” pag. 88
.
3. for fieldbus operation modes, connect J3 connector and see related fieldbus manuals for information about all
control topology parameters.
4. connect the appropriate input and output signals (please see
).
Содержание NTT 240
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