ABB SDCS-IOB-23 3BSE005178R1 Digital connection board

Enable the digital electronic damping function by placing DIP switch S1 position 4 in the open position as shown. This is the default position and should be used for most applications if your application is affected by loss of torque at mid-range speeds. If pulse placement techniques are being used, disable the digital electronic damping function by placing DIP switch S1 position 4 in the open position. Benefit This feature controls torque loss at mid-range speeds. When enabled, the motor maintains torque at mid-range operation, provided the torque load does not exceed motor torque ratings

3 Idle Current Reduction

The Idle Current Reduction (ICR) function reduces the phase current at times when no motion is commanded. Motor current is reduced when no step commands are received for a given time. This time is set at the factory to be 0.1 seconds. Current to both motor windings is reduced by one-half. The ICR function can be enabled/disabled using DIP switch S1 position 5. ICR is disabled when DIP Switch S1 position 5 is in the closed position and enabled with a delay of 0.1 second (current is reduced by 50% when no step command is received for 0.1 second) when the switch is open. Note: When ICR is active, both the holding torque generated by the motor and the motor stiffness around the holding position are reduced by approximately 50%.

Setting Motor Current

 Motor current can be set using DIP Switch S1 positions 6, 7, and 8 as shown. Current should be compatible with motor current ratings. 3.2 Setting Up the Serial Address Using Switch S2 Definition 

This switch: • determines if you are using RS-232 or RS-422/RS-485 communications. 

• sets the address required for each 6445 on the RS-422 or RS-485 bus.

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