Technosoft 2014
103
iPOS4808 MX Technical Reference
In case of
brushless
motors driven in
trapezoidal
mode, the voltage command is the voltage to
apply between 2 of the motor phases, according with Hall signals values. In this case, the
correspondence with the voltage applied in SI units i.e. [V] is:
]
IU
[
command
Voltage
Vdc
]
V
[
command
Voltage
32767
This correspondence is akso available for
DC brushed
motors which have the voltage command
internal units as the brushless motors driven in trapezoidal mode.
6.7. Voltage measurement units
The internal voltage measurement units refer to the drive V
MOT
supply voltage. The
correspondence with the supply voltage in [V] is:
]
IU
[
measured
_
Voltage
urable
VdcMaxMeas
]
V
[
measured
_
Voltage
65520
where VdcMaxMeasurable
–
is the maximum measurable DC voltage expressed in [V]. You can
read this value in the “Drive Info” dialogue, which can be opened from the “Drive Setup”.
Remark:
the voltage measurement units occur in the scaling of the over voltage and under voltage
protections and the supply voltage measurement
6.8. Time units
The internal time units are expressed in slow loop sampling periods. The correspondence with the
time in [s] is:
]
IU
[
Time
×
T
=
]
s
[
Time
where T
–
is the slow loop sampling period expressed in [s]. You can read this value in the
“Advanced” dialogue, which can be opened from the “Drive Setup”. For example, if T = 1ms, one
second = 1000 IU.
6.9. Master position units
When the master position is sent via a communication channel, the master position units depend
on the type of position sensor present on the master axis.
6.10. Master speed units
The master speed is computed in internal units (IU) as master position units / slow loop sampling
period i.e. the master position variation over one position/speed loop sampling period.
Summary of Contents for iPOS4808 MX Series
Page 2: ......
Page 4: ......
Page 14: ... Technosoft 2014 XII iPOS4808 MX Technical Reference This page is empty ...
Page 37: ... Technosoft 2014 35 iPOS4808 MX Technical Reference ...
Page 69: ... Technosoft 2014 67 iPOS4808 MX Technical Reference Figure 3 23 Multiple Axis CAN network ...
Page 112: ... Technosoft 2014 110 iPOS4808 MX Technical Reference This page is empty ...
Page 113: ......
Page 114: ......