Parker Hannifin S.p.A. - Divisione S.B.C. “SPD” User’s Manual
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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).
8.2.5 Current or torque adjustment (typical)
To set the converter to Current mode (torque adjustment), the speed ring is excluded by
setting Pb42.2=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.
8.2.6 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, b42.1 and b42.5 as given in
the table below.
Pb42.0, and Pb42.5. See App. for the Signal and counter conventions used.
Description of the modes
Pb42.0=0
Incremental Encoder simulation
, On encoder out pin; the number of turn
pulses must be programmed in Pr 44.
Pb42.0=1 The
function
Virtual encoder simulation
is enabled (Dummy Master)
Pb42.5=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.
Pb42.5=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:
A
B
C
With the “Virtual encoder” function enabled, a virtual encoder (dummy Master) will be
available, whose speed will be that set in Pr3. The set speed has a resolution equal to 1 rpm
and a value in the range -3500 and +3500 rpm. Output signals (phase A, phase B) will
simulate an encoder of Pr44 step / revolution, with phase C of zero not coupled to a reference
zero.
