Yaskawa VARISPEED-600 SERIES INVERTER - Manual (Page 43)

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4.3 MASTER/SLAVE SELECTION CONNECTOR SETTING
Selection Connector Setting MASTER side is selected prior to shipment. Use the
units without changing the setting.
SLAVE side is selected when more than one braking unit is combined to use and
braking start levels must coincide. Refer to Par. 4.4, “Parallel Connection of Brak-
ing Unit” for details.
4.4 PARALLEL CONNECTION OF BRAKING UNIT
For using more than one parallel−connected braking unit, connect and select the
connectors as follows. (See Fig. 23.)
: Braking units have a MASTER/SLAVE selection connector. (See Fig.
10.) Select MASTER side only for braking unit 1 and select SLAVE side
for braking units 2 and 3.
: Connect thermal protector on the braking resistor unit and thermoswitch
on the braking unit in parallel. Refer to Figs. 15 and 18 for proper wiring.
: Use properly rated wire in accordance with table 2 on page 31.
: Use twisted−pair wires of 1mm or less for connection between 5, 6 and
1, 2 of the braking units.
: Parallel connection of braking unit is possible up to a maximum of 10
units.