Technical Explanation
SKiiP
®
3 Parallel Board
© by SEMIKRON
2017-08-30
– Rev02
11 / 20
8.2
ERROR OUT Signal
The SKiiP
®
3 Parallel board combines all ERROR signals of the SKiiP
®
3 subsystems as well as the internal
±15V-Observer failure signal, to one unidirectional ERROR OUT signal and routes
it to the customer’s
controller. This output is short-circuit proof.
The ERROR signal is active when one of the connected SKiiP systems is in ERROR mode or when the parallel
board is in error mode.
The characteristics of switching signal can be found in the Table 5.
Table 5:
Digital signal characteristic ERROR and HALT input
Signal name
ERROR OUT
Description
SKiiP
®
3: Open collector output without internal pull
up resistor. No capacitor to GND
8.3
Temperature ERROR OUT Signal
The SKiiP
®
3 Parallel board combines all Temperature ERROR signals of the SKiiP
®
3 to one unidirectional
Temperature ERROR OUT signal and routes
it to the customer’s controller. This output is short-circuit proof.
Temperature ERROR is active, when one of the connected SKiiP subsystems is in Temperature ERROR
mode.
9
Analogue Output Signals
On the user controller board a differential amplifier should be used which is connected to the analogue output
and the corresponding ground signals (TEMP_ANA, I_ANA, GND_ANA). This ensures accurate measurement
of the analogue signals because there is no voltage drop on the analogue ground wires due to the high input
impedance of the differential amplifier. Please refer to the Technical Explanation SKiiP
®
3, Rev.2 for further
information and for recommended electrical circuit.
The analogue signal ground line is not used for supply currents when a differential amplifier is used on the
controller side.
