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08.96
5.2.5.5
Replacing the PSU
PSU Power-Supply Unit (Power Supply)
• Remove connector X18; X258 and X70.
• Remove the Torx bolt with ground connection from the side panel.
• Shift the PSU from the locking bolts and remove towards the front under the input bar.
• Install the new PSU in the invserse sequence.
5.2.5.6
Replacing the IGD
IGD
IGBT-Gate Drive
♦ Types of construction E to F
The IGD is directly mounted onto the IGBT
modules.
• Remove the capacitor bank
• For type of construction E: Remove the
electronics box with IVI
• Label the output wiring U2/T1;V2/T2;W2/T3 and
disconnect
• Remove the inverter busbars after releasing the
12 M6 bolts
• Label the auxiliary connections of the defective
module and remove
• Withdraw connector X295
• Release the mounting bolts and remove the IGD.
♦ Install the new IGD in the inverse sequence
5.2.5.7
Replacing the IGBT modules
• Replace as for IGD, but additionally
• Remove the mounting bolts of the defective IGBT
modules and remove the IGBT.
• Install the new IGBT module. Observe the following:
− Coat the module mounting surface with a thin and
uniform coating of heat conducting paste.
− Tighten-up the IGBT module mounting bolts with
3 Nm, observe the sequence (Fig. 5.2).
Siemens AG
6SE7087-6AH70
SIMOVERT MASTER DRIVES
Operating Instructions
♦ Types of construction G to H
The IGD is located in the rear mounting plane on
the heatsink betwen the inverter modules, i.e.
behind the capacitor bank and the inverter busbars.
• Remove the capacitor bank
• Remove the SML- and SMU boards
• Remove the inverter busbars
• Remove the SIB board
• Remove the fiber-optic cable connections
• Remove connector X290
• Remove the mounting bolts and remove the
IGD.
2
3
6
5
Fig. 5.2
Tighten-up IGBT modules
Maintenance
C
C
E
E
3
2
1
Tighten-up the IGBT modules
1. By hand (≈ 0,5 Nm),
sequence: 2 - 5 - 3 - 6 - 1 - 4
2. tighten-up with 3 Nm,
sequence: 2 - 5 - 3 - 6 - 1 - 4
4
5
6
5-5
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