SLB communication how to achieve the master / slave switching of the inverter - News - Global IC Trade Starts Here Free Join

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The 6SE70 inverter is applied through the SLB communication converter, and 4 inverters are driven by 4 motors, using master/slave control. The active device is speed control and slave torque control. The parameters are:
Active device: P100=3, P554=B601 running command, P443=K0013 analog input speed given, P751.1=B601, P751.3=K168.
Slave device: P100=3, P554=B7103, P486=K7003 torque reference, P587=1 slave control problem: This system 1# inverter is the master, 2, 3, 4 are slaves. If the host fails, the entire system will be paralyzed, and 3 inverters cannot be dragged. How to achieve the switch between master and slave now? For example, master/slave switching is implemented between the 1# inverter and the 3# inverter. Can P587 be implemented? How to achieve? The second question is whether the inverter can power off the faulty inverter after switching. The third question is whether the host's P443=K0013 analog input speed reference should also be changed to the device to be switched.
A: Your question can be divided into two parts:
1. SIMOLINK communication
The four inverters use SLB communication, and the typical configuration is deviceless device-to-device communication (PeertoPeer). Each of its stations can be used as both a distributor and a transceiver, and the optical fiber is formed into a ring network. Once the communication is established, the SLB's station address, number of stations, communication failure time, cycle time, channel number, etc. have been determined and cannot be modified. Therefore, in SLB-based master-slave control, SLB communication can not be broken first, otherwise it will report downtime. Therefore, your second question can be answered as follows: If you want to stop, you must connect external DC24V power supply, supply power to CUVC and SLB, and maintain SLB communication.
Seriously suspected that LZ provides "P751.1=B601", P751.1 is the main direction to send and stop signals, in Word units, can only be connected to the K connector. Generally, P751.1 is the 3001 control word 1; the receiver is P554=B7100, which is the bit 0 bit of K7001, that is, the bit 0 of the transmitted 3001.
2, the master-slave control you use is described in the text: the slave device operates in the torque loop mode.
But your problem is, if the host fails 1#, then a 3# in the slave automatically becomes the host. It should provide torque setting P486 and start/stop command P554,1# to 2# and 4# through SLB. The fault has been stopped and the correct torque setting and start and stop commands are not available:
Therefore, it is possible to select an unused channel in the SLB and implement P590 by switching the parameter group.
Implementation:
1. Reconfigure SIMOLINK
First check if the current SLB settings meet our needs, see P742=? , the channel number currently used. The default is 2, then Channel0 and Channel1 are used in this SIMOLINK communication. We will use the 3# start and stop command to give 2# and 4#, 3# Iq settings to 2# and 4#. Consistent with the 1# transmitter, two channels are required, set to Channel2 and 3.
Therefore, you need to reconfigure SIMOLINKP60=4; P745=4 (to be set for each SLB board)
3#P751.5=3001, P751.7=K168; control word 1 and torque set value are sent from channels 2 and 3.
3#P587.2=0P44313 Switching the received data by switching the BICO parameter group
2# and 4#P749.02=1.2 from channel 2 of 2# machine; P749.3=1.3 from channel 3 of 2# machine; (Note: here assumes that P# of 3# is 1) Receive control word of 3# And set value.
2# and 4#P554.2=7500P486.2=7007; switching BICO parameter group for receiving data

2. If P751.2 and P751.4 are not used, SIMOLINK can be not reset, Channel0 is used to transmit 1# torque reference and start/stop signal; Channel1 is used to transmit 3# torque reference and start/stop signal. .
1#P751.1=3001; P751.2=K168;
3#P749.0=0.0 reads data from channel 0 of node 0 to KK7031; P751.3=3001P751.4=K168,
Send control word 1 and torque setpoint in channel 1.
3#P587.2=0P44313 Switching the received data by switching the BICO parameter group
2# and 4#P749.0=0.0P749.1=1.1 (again assuming node address P740=1 of 3#)
Read data from channel 1 of node 1 to KK7033, P554.2=B7300P486.2=K7004
Switching the received data by switching the BICO parameter group

Because there are not so many SLB boards, it is impossible to experiment and can only stay in theory. I hope that qualified friends can help me check it out.

Reference to use the full function map 140150160180