ABB UGTMEM-01SB47SR Motor

Opening the stop contact between X8/5 and X8/6 will deactivate all drives supplied from the NMD10 or NMD20 power module. You can form an external stop circuit as shown in Figure 2-2. Any open circuit in the primary circuit will open the stop circuit relay causing the drives to be de-energised. This circuit may be used as part of a Category 0 emergency stop circuit. The voltage free relay contact shown within the power supply (readiness contact) is normally open and only closes when all drives fed from the NMD supply are initialised to a working state. If a fault occurs on any axis, this contact will open causing the stop relay to open which in turn will cause all drives to de-energise. All drives, with the possible exception of the drive causing the original fault will report an error E55, meaning they have been deactivated by an stop condition.

Ribbon Cable Connections (X4)

 Bus control and status data signals are passed between drives and their associated power supply via the ribbon cable connected to X4. Each drive needs to be connected and the drive furthest away from the power supply will need to have its X4 connector terminated, using the termination plug supplied with the NMD power supply.

Ballast Resistor Connections (X5 on NMD20)

 If a particular application is operating on the edge of the power dump safe operating area, you may see the red and green diagnosis LEDs both come on together, indicating a ballast circuit overload. The additional regenerated energy can be dissipated by using extra ballast resistors connected to the NMD20 power supply. The connection used is shown in Figure 2-3. Note: Only the NMD20 power supply has the external connections that allow extra ballast resistors to be added.

Common problem

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