Technosoft IDM240-5EI - Voltage Measurement Units; Time Units; Drive Temperature Units; Master Position Units

© Technosoft 2011 87 IDMx40 Technical Reference
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
urableVdcMaxMeas
]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. Drive temperature units
The drive includes a temperature sensor. The correspondence with the temperature in [°C] is:
Drive temperature [°C] =
]C/V[gain_Sensor
]V[C_output_Sensor
]C/V[gain_Sensor
]IU[ratureDriveTempe]V[
°
°
−
°×
× 0
65520
3
where:
Sensor_gain – is the temperature sensor gain
Sensor_output_0°C – is the temperature sensor output at 0°C. You can read these values
in the “Drive Info” dialogue, which can be opened from the “Drive Setup”
6.10. Master position units
When the master position is sent via a communication channel or via pulse & direction signals,
the master position units depend on the type of position sensor present on the master axis.
When the master position is an encoder the correspondence with the international standard (SI)
units is: