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• DOK-POWER*-TVD*1.3****-ANW1-EN-E1,44 • 02.97
3. Electrical Connections
3.9. DC bus smoothing choke
The TVD 1.3 must always be operated with a DC bus smoothing choke in the
"L+ line“.
Supply Module
DC bus smoothing choke
TVD 1.3-08-3
GLD 16 (or NAM 1.3-08)
TVD 1.3-15-3
GLD 17 (or NAM 1.3-15)
(See Section 3.3, for power loss see dimension sheet in section 7).
3.10. Additional DC bus capacitance
In plants where feed axes have to be accelerated and braked in rapid
succession, e.g., nipple machines, surface grinders, roll feeds, and so on, the
bleeder power and thus the power dissipation can be reduced by fitting
additional capacitors to the link circuit.
In a few applications, it is necessary to initiate a return of the drives with a
mains failure or an E-stop. The energy stored in the DC bus circuit can be used
for the return. The energy stored in the DC bus circuit can be increased by
additional capacitance.
Module
Maximum additional capacitance
TVD 1.3-08
Cmax = 70 mF
TVD 1.3-15
Cmax = 120 mF
3.11. Bridge circuit capacitance
In an effort to keep system perturbations as low as possible, the TVD must
always be operated with the NAM mains connection module or the bridge
capacitance CZ 1.2-01-7. See section 3.3. for details.
