Master Slave Configuration - Siemens MJ-5 Installation Manual

8. Master Slave Configuration

In master slave configuration 3 control panel operate in synchronous mode. Master controls the operation of both the
slaves. Whenever the master makes a Tap change, it tells the slaves to make matching tap change.
On wakeup master send the tap positions to slaves and slaves will operate to go to same tap position.
Setting for Master slave operation-
Advance configure –>Slave-master
Advance configure –>MaCntrl
Master - Control will operate with respect to voltage on master regulator.
Lowest – Control will operate with respect to lowest voltage of 3 regulators.
Highest - Control will operate with respect to highest voltage of 3 regulators.
Average - Control will operate with respect to Average voltage of 3 regulators.
When Slave-master configuration is set to Master/SL/S2 remote Auto inhibit functionality turns ON.
Slave will stop doing any automatic operation and master will work according to MaCntrl setting.
Master will regulate other 2 slave device also.
Connection Diagram – Fiber optic comm module is needed for master slave and connection need to be done as ring
(shown in below diagram).
30
OFF – Master slave is off
MA – Configure control as Master
SL – Configure Control as Slave 1
S2 – Configure control as Slave 2