Pacific Scientific OC930, Справочное руководство по аппаратному и программному обеспечению

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4.1.2 Digital Frequency Command Torque Block (BlkType = 4)
This mode is the same as the analog command torque block mode
except that the command input comes from the Incremental
Position Command inputs on J4-21 through J4-24. The frequency
on these input terminals is the variable
EncFreq
and is
substituted for the
AnalogIn
input to the
CmdGain
scaling.
The units on
CmdGain
for
BlkType
= 4 become Amp/kHz.
For this mode to work the additional parameters EncMode and
EncInF0
must be set appropriately.
4.1.3 Serial Port Command Torque Block (BlkType = 0)
This mode requires the OC930 to work. It is not possible to
directly command the current over the serial port. But, you can
use the analog command torque block mode to virtually
implement it. First, set
VelCmdSrc = 1, which sets VelCmd =
VelCmd2
. Then, send the desired torque current command to
VelCmd2
. If
KVP
= 60/2
π
Amp/rad/sec then
VelCmd2
= 1
RPM would command 1 Amp.
4.2 Velocity Block Modes
4.2.1 Analog Command Velocity Block (BlkType = 1)
This mode allows the differential analog voltage between
terminals J4-1 and J4-2 to set the motor’s shaft velocity, also
informally known as shaft speed. The easiest way to set up this
mode is to select the Velocity Block - Analog Command option
when doing New Set Up under the File menu or Drive Set Up
under the Drive menu of 930 Dialogue. The overall gain of this
block, i.e. the output shaft velocity per input volt, is set by the
CmdGain
parameter in kRPM/V and should be set by the user to
the desired value.
4 - 4 MA930 Manual