Parker Hannifin S.p.A Divisione S.B.C. user’s manual TWIN-N and SPD-N
104
7.7.2 Speed adjustment
In the operating mode default conditions (Pr31=0), the drive adjusts the motor in speed based
on the reference value.
The reference origin can be selected with the main block parameters, between analogue
(external potentiometer), internal (digital), or external pulse string.
It is possible to make comparison by zero speed, and other speeds, set acceleration and
deceleration ramps, change the current and torque limits, and check the drive status.
The main block diagram shows the main drive structure, how the configuration parameters act
(bit or Pb parameters) and the main numerical parameters (Pr).
7.7.3 Current or torque adjustment (typical)
To set the converter to Current mode (torque adjustment), the speed ring is excluded by
setting b42.2=1.
The main analogue reference is assumed as torque reference (current).
If the nominal current value is exceeded, the thermal image trips as in the speed operation.
7.7.4 Frequency input/output (Encoder ports)
The frequency input/output connector X422 (RS-422) can be configured by the software in
different functional modes by using the binary parameters b42.0 b42.5 as given in the table
below.
b42.0, and b42.5. See App B for the Signal and counter conventions used.
PAR
Description of the modes
b42.0=0
Incremental Encoder simulation, On encoder out pin; the number of turn
pulses must be programmed in Pr 44.
b42.0=1
The function Virtual
encoder simulation is enabled (Dummy Master)
b42.5=1
Encoder input is programmed as input in quadrature (phases A and B), this
configuration must be used with the operating modes 13 and 14.
b42.5=0
Encoder inputs are programmed as frequency/sign input. The mode must be
set when you want to simulate a stepper motor or the pulses train function. The
frequency connects to A /A input while the direction connects to B /B input
After the programming, the configuration must be saved and the unit must be powered off and
on again. When configured as encoder simulator or o virtual encoder, the counters Encoder In
input used by the operating modes are active. Incremental encoder outputs:
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