Gating of the power semiconductors
Table 3-10 Power Stack Adapter 4: Gating of the power semiconductors
Duplex fiber-optic ca‐
ble
Meaning:
Gating power semiconductors
Technical data
X11 to X16 Inverter phase L1 (N branch) Fiber-optic cable type:
1 mm plastic optical fiber (POF)
Max. length of fiber-optic cable:
20 m
X21 to X26 Inverter phase L1 (P branch)
X31 to X36 Inverter phase L2 (N branch)
X41 to X46 Inverter phase L2 (P branch)
X51 to X56 Inverter phase L3 (N branch)
X61 to X66 Inverter phase L3 (P branch) / Braking
Module branch
3.4.6 Actual value sensing
The actual value sensing is used to measure voltages and currents. The voltage are measured
using AVT combination modules, whose measuring resistors are connected in series. The
currents are measured using electronic LEM current transformers and AVT combination
modules.
AVT combination modules are separated and isolated from circuits that can be touched using
a transformer. The AVT combination module convert analog signals into digital signals. They
transfer signals to the Power Stack Adapter (PSA) via fiber-optic cables.
Detailed information about interconnecting the actual value sensing modules is provided in the
circuit manual. The component mounting locations are provided in the layout diagram.
See also
Replacing the AVT combination module (Page 106)
Replacing the current transformer (Page 107)
3.4.7 Common power supply
3.4.7.1 Field of application
The common power supply (GSV) is an AC/AC converter that converts an alternating voltage
into a square-wave voltage. You can select one of the following rated voltages with associated
rated frequencies for the alternating input voltage:
● 1-phase 115 VAC / 60 Hz
● 1-phase 230 VAC / 50 Hz / 60 Hz
● 1-phase 240 VAC / 50 Hz / 60 Hz
Description
3.4 Components
SINAMICS SM120 6SL38855?B
Operating Instructions 12/2015 41
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