Vector SIMOVERT MASTERDRIVES 6SE70 VC Instructions d'exploitation télécharger pdf (Page 152)

Maintenance Vector Control Chassis Type Frequency Converter

476 869 4070 76 J AB-74 Siemens AG

12-12 Operating Instructions SIMOVERT MASTERDRIVES

12.19 Replacing the thyristor modules (V1 to V3, type K)

Replacement as in the case of the TDB, with the following additions:

♦

Disconnect the supply cables C+ D

−

of the option terminals

♦

Disconnect the connection of the C and D bars between the rectifier

and the inverter.

♦

Disconnect the connections U, V, W of the modules.

♦

Disconnect the connections between modules and C(+) bar.

♦

Remove the connecting bar C(+).

♦

Disconnect the connections between modules and D(

−

) bar.

♦

Remove the connecting bar D(

−

♦

Undo the module fixing screws (M6, Torx).

♦

Remove the module (weight approx. 500 g).

♦

Clean the contact surface.

♦

Coat the new modules thinly and evenly with a thermo-lubricant and

mount them.

Tightening torque of the fixing screws: 6 Nm ± 15 %.

♦

Further installation is performed in the reverse sequence.

Tightening torque of the electrical connections (C and D): 12 Nm (+

5 %,

−

10 %).

Fig. 12-6 TDB board, pre-charging resistors and thyristor modules V1, V2, V3

1 2 ... 147 148 149 150 151 152 153 154 155 156 157 ... 161 162

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Vector SIMOVERT MASTERDRIVES 6SE70 VC Instructions d'exploitation Page 152