Significance Of Control Word (1 And 2) Commands - Siemens SIMOVERT Master Drives 6SE70 Betriebsanleitung

09.02
4.3.1.1.7

Significance of control word (1 and 2) commands

The status of the rectifier/regenerating unit can be read in the operating display r000: e.g. READY-TO-SWITCH-
ON r000=009
The function sequences are described in the sequence in which they are realized.
Bit 0: ON command (↑ "ON")
The command is executed with a positive edge change from L to H (L → H) only in the READY-TO-SWITCH-
ON (009).
After the command has been accepted:
♦ Changeover to the status WAIT FOR LINE VOLTAGE (010)
The main contactor is closed.
♦ Changeover to the status READY STATUS(011)
♦ Changeover to the status TEST PHASE (012)
Takes place only if thyristor or ground-fault test (P353,P354) selected.
♦ Changeover to the RUN status(014)
Pre-charging is carried out, followed by normal operation.
Bit 0: OFF1 command (L "OFF1")
The OFF1 command (stop) is executed with an L signal.
After the command has been accepted:
♦ The DC link discharges itself until the link circuit voltage has fallen to 20% of 1.35
The firing pulses are then inhibited and the main contactor (if installed) drops out.
If the OFF1 command is removed again (ON command) during the discharge process, the latter is
interrupted and changeover is made again to the RUN (014) status.
♦ If the rectifier/regenerating unit is in the READY status, the firing pulses are disabled and the main contact, if
installed, drops out.
♦ If there is no OFF2 command:
Changeover to the READY TO SWITCH ON status (009)
Bit 1: OFF2 command (L "OFF2")
The OFF2 command (electrical) is realized with an L signal.
After the command has been accepted:
♦ The firing pulses are inhibited and the main contact drops out
♦ Changeover into the SWITCH-ON INHIBIT status(008)
The OFF2 command is simultaneously effective from three sources (P555, P556 and P557)!
Siemens AG 6SE7087-6AK85-0AA0
Common Rectifier Operating Instructions
NOTE
NOTE
Priority of the OFF commands OFF2 > OFF1
P071.
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