Vector SIMOVERT MASTERDRIVES 6SE70 VC Provozní pokyny stáhnout pdf (Strana 146)

Maintenance Vector Control Chassis Type Frequency Converter

476 869 4070 76 J AB-74 Siemens AG

12-6 Operating Instructions SIMOVERT MASTERDRIVES

12.7 Replacing the SML and the SMU

SML: Snubber Module Lower

SMU: Snubber Module Upper

♦

Remove the capacitor battery.

♦

Undo the fixing screws (4 x M8, 8 - 10 Nm or 4 x M6, 2.5 - 5 Nm, 1 x

M4, max 1.8 Nm).

♦

Remove the modules.

Install the new modules in the reverse sequence.

12.8 Removing and installing the module busbars

(from type G)

♦

Remove the capacitor battery.

♦

Undo the screws of the module busbars.

M8 power connections

M6 fastening on spacers

M4 circuit.

♦

Take out the insulation of the SMU / SML.

♦

Lift out the module busbars.

The spacing between the plus busbar and the minus busbar must be at

least 4 mm. In order to install the module busbars, you must therefore

use a template, e.g. a 4 mm thick piece of plastic.

♦

Place the module busbars and SMU/SML insulation on spacer bolts

and fix in place (M6).

♦

Place the template instead of the DC link bus module in the module

busbars.

♦

Locate the SMU and SML and tighten the modular connections (M8,

8 - 10 Nm, M6, 2.5 - 5 Nm).

♦

Screw the nuts tight on the spacer bolts (6 Nm).

♦

Connect the circuit resistors (M4, 1.8 Nm).

♦

Tighten the power connections (M8, 13 Nm).

♦

Remove the template from the module busbars.

Module screw

connection

Module

screw con-

nection

−

Template 4 mm

Fig. 12-4 Installing the module busbars

Removal

Installation

NOTE

1 2 ... 141 142 143 144 145 146 147 148 149 150 151 ... 161 162

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