Parker Hannifin S.p.A. - Divisione S.B.C. “SPD” User’s Manual
37
8 Functions and operating modes
8.1 Block diagram and introduction to parameter
setting
The torque, speed, acceleration and position control functions are carried out by special digital
electronics.
In this section we explain how parameters are set and the meaning of each parameter. We also
provide the functional block diagram and the description of advanced functions. The system is
easy to use and flexible.
Reference
management
Limit switch
and stop
Speed adjuster
Torque limit
management
Operating
mode
Speed
windows
Alarm
management
Electric axis and
positions
b40.2
Pr31
analogue
digital
internal
Electric CAM
Torque control
CAN in real time
Torque request
In the diagram below the general block diagram of the part of the converter that is controlled
by parameters is presented. Parameter Pr31 (default = 0) is used to select the operating mode.
The Pb40.2 (default=0) determines whether the reference comes from the reference
management block or from the operating mode being used. Below we describe how to
interpret the symbols used in the block diagrams. The main block diagram describes
graphically how the converter works. Each rectangular block represents one or more read-
write parameters. The rhomboid blocks represent read-only parameters. You can find other
functional blocks in the diagram such as: greater than, equal to, less than, logical AND/OR.
For all these functional blocks, standard symbols are used. Binary parameters are represented
as switches and the position in the diagram corresponds to the default value.
