Siemens SINAMICS G180, Инструкция по установке и эксплуатации

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Description
3.3 Accessories
Installation and Operating Instructions SINAMICS G180
48
Operating Instructions, 02/2019, 4BS0751-007
Test the PTC thermistors as described below. Consult the factory if the shutdown does not
function.
Inverters without a peripheral board provide PTC thermistor inputs at control cable terminals
-X2:27-28. If the peripheral board 2 or 4 is fitted, connect the PTC thermistors of the motor to
control cable terminal -X3.
This has the following advantages:
● Sensor short-circuit monitoring
● Protective separation of the PTC thermistor inputs from all other inputs up to a rated
voltage of 690 V. The control cable terminals -X2:27/28 provide protective separation
from the electronics, but no separation from the other inputs.
● Input -X3:90-91 is ATEX-certified according to PTB 07 ATEX 3057 for motors located in
hazardous zones.
● Redundant shutdown route, realized using hardware.
Checking the PTC thermistor shutdown function
Test the shutdown function before commissioning the board. Proceed as follows:
1.
Replace the 100 Ω resistor at control cable terminals -X3:90/91 with a potentiometer with
at least 10 kΩ. Set a value of approx. 100 Ω.
2. Ensure that 24 V is applied at control cable terminal -X2:8. When required, jumper -X2:8
and -X2:3.
3. Connect power to the inverter so that the "READY" LED on the display lights up.
4. Increase the resistance at the potentiometer. The converter must go to "FAULT" at the
latest for 3,8 kΩ:
– LED "READY" goes dark.
– The red "FAULT" LED is lit.
– The inverter displays fault message "!!Fault!! PTC thermistor -X3:90/91".
5. From this time, the converter cannot be switched on by pressing the <On> button on the
display.
6. Acknowledge the error, e.g. using the <S+I> buttons on the display. The converter checks
both the redundant shutdown routes for the acknowledgement.
–
If the converter returns to "READY" after the acknowledgement and does not display
any errors, the test has been completed successfully.
– If the inverter remains in the "FAULT" condition and in the display "!!Inverter
fault!! Test PTC -X3:90/91" then one of the shutdown paths is not functioning
correctly. In this case, please contact the factory.
7. If the converter is ready again, then rotate the potentiometer towards 0 Ω. At the latest at
a resistance of 15 Ω the short -circuit monitoring of the sensor circuit responds. Follow the
description under points four and five.
8. The safety function is checked automatically when the control voltage of the converter
returns and when the error is acknowledged after a test.