Siemens Simovert 6SE70 Series Operating Instructions Manual page 101

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Bit 3: Run enable command (H "Run enable")
The RUN ENABLE command (firing pulse enable) is implemented with an H signal.
After the command has been accepted:
♦ If the READY status (011) still applies.
Changeover to the RUN status (014); the firing pulses are enabled and the voltage setpoint is approached
over the pre-charging ramp.
Bit 3: Run inhibit command (L "Run inhibit")
The RUN INHIBIT command (firing pulses disabled) is implemented with an L signal.
After the command has been accepted:
♦ If the RUN status (014) applies:
Changeover to the READY status (01); the firing pulses are inhibited.
Bit 4 to 6: reserved
Bit 7: Acknowledge command (↑ "Acknowledge")
The command is executed with a positive edge change from L to H (L → H) only in the FAULT status (007).
After the command has been accepted:
♦ All actual faults are deleted after having been previously transferred into the diagnostics memory
♦ If no faults are present:
The drive changes into the status SWITCH-ON INHIBIT (008)
♦ If actual faults are present:
The drive remains in the FAULT status (007).
The acknowledge command is simultaneously effective from three sources (P565, P566 and P567) and
always from the PMU!
Bit 8: Inching 1 ON command (↑ "Inching 1 ON")
The command is executed with a positive edge change from L to H (L → H) only in the READY-TO-SWITCH-
ON status (009).
After the command has been accepted
♦ an ON command is automatically executed (description, refer to control word bit 0).
Bit 8: Inching 1 OFF command (L "Inching 1 OFF")
The command is executed with an L signal.
After the command has been accepted:
♦ An OFF 1 command is automatically executed (description, refer to control word bit 0).
Bit 9: Inching 2 ON command (↑ "Inching 2 ON")
The command is executed with a positive edge change from L to H (L → H) only in the READY-TO-SWITCH-
ON status (009).
After the command has been accepted
♦ an ON command is automatically executed (description, refer to control word bit 0).
Siemens AG 6SE7087-6AK85-1AA0
Rectifier/Regenerating Unit Operating Instructions
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