Technical Manual PD4-E-M (EtherCAT)
3 Technical details and pin assignment
Integrated encoder
Magnetic multiturn absolute encoder, single-turn resolution: 12 bit
(4096 per revolution), number of revolutions: +/-2
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Protection circuit
Overvoltage and undervoltage protection
Overtemperature protection (> 68° Celsius on rear cover)
Polarity reversal protection: In the event a polarity reversal, a short-
circuit will occur between supply voltage and GND over a power diode;
a fuse is therefore necessary in the supply line. The values of the fuse
are dependent on the application and must be dimensioned
•
greater than the maximum current consumption of the controller
•
less than the maximum current of the voltage supply.
If the fuse value is very close to the maximum current consumption of
the controller, a medium / slow tripping characteristics should be used.
3.4 Overtemperature protection
Above a temperature of approx. 75°C on the power board (corresponds to 65–72°C outside on the
back cover), the power part of the controller switches off and the error bit is set (see objects 1001
h
and
). After cooling down and confirming the error (see table for the controlword, "Fault reset"), the
controller again functions normally.
The following temperature test results provide information on the temperature behavior of this
controller.
Temperature tests are performed under the following conditions:
•
Operating voltage: 48 V DC
•
Motor current: 4.2 A (stepper motor) / 6 A (BLDC motor) rms
•
Operation mode: Velocity Mode, full step, 30 rpm
•
Ambient temperature: 25 °C / 45 °C
•
Altitude of site: 500 m above seal level
•
No external cooling in the climatic chamber, e.g., via fan
•
Motor not flanged mounted
The following graphics show the results of the temperature tests:
Version: 1.0.1 / FIR-v1748
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