2-1 DIP Switch Setting 2Functions 2-1 DIP Switch Setting 2 Set up operating voltage level and parallel operation with the DIP switches. Note: Be sure to turn off the power supply before setting the DIP switches. Operating voltage level setting (SW1, SW2) The operating voltage of the Regenerative Braking Unit can be set at 3 levels: “Standard” (default setting), “ − 5 %” and “ − 10 %”, by the DIP switch settings. This function is useful in preventing an overvoltage trip by lowering the operating voltage of the Re- generative Braking Unit when an overvoltage trip occurs due to the receiving voltage, deceleration time or other factor.
Depending on the receiving voltage, however, the Regenerative Braking Unit will operate continu- ously even by just turning on the Inverter power supply. When you change the DIP switch settings, use thorough caution in regards to the receiving voltage. Functions Receiving voltage Ч √ 2 + 20 V Parallel operation settings (SW3, SW4) Interlocking operation can be performed by two units (master and slave units) in parallel connection via the signal lines (MA1, MA2, SL1, SL2) connection between the units and the DIP switch setting. When a unit is set as the slave using the DIP switches, the operating voltage of the slave unit de- pends on the master unit settings.
The DIP switch settings are as follows: Note: The DIP switches are located at the upper left of the PCB in the Regenerative Braking Unit. The switch numbers are indicated on the switch body. 2-1 Setting functions DIP switch setting (X: Either ON or OFF is acceptable.) Note Master unit Operating voltage level: Standard OFF OFF ON ON ON 1 2 3 4 OFF Default setting Master unit Operating voltage level: −5 % ON OFF ON ON ON 1 2 3 4 OFF Master unit Operating voltage level: −10 % ON ON ON ON ON 1 2 3 4 OFF Slave unit X X OFF ON ON 1 2 3 4 OFF Operating voltage of the slave unit depends on the master unit settings.