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اینورتر ماژولار زیمنس SINAMICS G120 با کنترل یونیت CU240E-2 و پنل IOP، نمای سه‌رخ

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SINAMICS G120 frequency converter

SINAMICS G120

Modular Siemens frequency converter from 0.55 kW to 250 kW, with a separate control unit and power module and integrated safety functions up to SIL 2

Price and delivery time are given after a technical review.

Overview

Overview

SINAMICS G120 is Siemens' modular frequency converter for general industrial duty. Unlike one-piece converters, each unit is built from two separate parts: a power module that supplies the motor, and a control unit that controls and monitors the motor and talks to the automation system. The operator panel is chosen separately.

Read more

That separation is the family's main advantage: changing the fieldbus protocol or adding safety functions means changing the control unit while the power module stays in place.

Range

0.55 kW to 250 kW, in three voltage families: 200 V, 400 V and 690 V. The power section uses IGBTs with pulse width modulation.

Safety

The safety functions are integrated in the drive and need no external safety relay: STO, SS1, SBC, SLS, SDI and SSM, up to SIL 2 to EN 61508 and PL d to EN ISO 13849-1.

Engineering

Configuration and commissioning are done with SINAMICS Startdrive inside TIA Portal, so the drive lives in the same project as the PLC and the HMI.

Features

  • Modular build: the power module and control unit are chosen and replaced independently
  • 0.55 kW to 250 kW
  • Three voltage families: 200 V, 400 V and 690 V
  • Integrated safety functions STO, SS1, SBC, SLS, SDI and SSM
  • IGBT power section with pulse width modulation
  • Configured in TIA Portal with SINAMICS Startdrive
  • Control units with PROFINET, PROFIBUS DP, USS and Modbus RTU
  • Failsafe (F) versions with extended safety functions

Advantages

  • The fieldbus can be changed without changing the power section
  • Safety without an external safety relay or its wiring
  • Simpler stock keeping: one power module works with several control units
  • Configured inside the same TIA Portal project as the PLC and the HMI

Models and codes

Models and codes
ModelOrder codeCode typeAttributesRequest
Control Unit CU240E-2واحد کنترل با ارتباط USS و Modbus RTU6SL3244-0BB12-1BA1Exact code
Communication:
USS, Modbus RTU
Inputs and outputs:
6 DI, 2 AI, 2 AO, 3 DO
Safety functions:
STO
Dimensions (W × H × D):
73 × 199 × 46 mm
Request Control Unit CU240E-2
Control Unit CU240E-2 DPواحد کنترل با PROFIBUS DP6SL3244-0BB12-1PA1Exact code
Communication:
PROFIBUS DP
Inputs and outputs:
6 DI, 2 AI, 2 AO, 3 DO
Safety functions:
STO
Safety communication:
PROFIsafe
Dimensions (W × H × D):
73 × 199 × 46 mm
Weight:
0.49 kg
Request Control Unit CU240E-2 DP
Control Unit CU240E-2 PNواحد کنترل با PROFINET و EtherNet/IP؛ ۶ ورودی دیجیتال، ۳ خروجی دیجیتال، تابع ایمنی STO و ارتباط ایمن PROFIsafe6SL3244-0BB12-1FA0Exact code
Communication:
PROFINET, EtherNet/IP
Inputs and outputs:
6 DI, 2 AI, 2 AO, 3 DO
Safety functions:
STO
Safety communication:
PROFIsafe
Dimensions (W × H × D):
73 × 199 × 46 mm
Weight:
0.49 kg
Request Control Unit CU240E-2 PN
Control Unit CU240E-2 PN-Fواحد کنترل ایمنی (F) با PROFINET و EtherNet/IP؛ علاوه بر STO توابع SS1، SLS و SDI و با PROFIsafe تابع SSM را می‌دهد و تا ۳ ورودی ایمن دارد6SL3244-0BB13-1FA0Exact code
Communication:
PROFINET, EtherNet/IP
Inputs and outputs:
6 DI, 2 AI, 2 AO, 3 DO
Safety functions:
STO, SS1, SLS, SDI, SSM (PROFIsafe)
Fail-safe inputs:
Up to 3
Dimensions (W × H × D):
73 × 199 × 46 mm
Weight:
0.49 kg
Request Control Unit CU240E-2 PN-F
Control Unit CU250S-2 PNواحد کنترل برای کاربردهای پیچیده (اکسترودر، سانتریفیوژ، موقعیت‌دهی) با PROFINET و EtherNet/IP؛ ورودی انکودر، توابع STO و SBC و SS1، و توابع ایمنی گسترده و موقعیت‌یاب EPos با لایسنس6SL3246-0BA22-1FA0Exact code
Communication:
PROFINET, EtherNet/IP
Inputs and outputs:
11 DI + 4 DI/DO, 2 AI, 2 AO, 3 DO
Safety functions:
STO, SBC, SS1 (SLS, SDI, SSM with licence)
Fail-safe inputs:
Up to 3
Encoder interfaces:
DRIVE-CLiQ, HTL/TTL/SSI, resolver/HTL
Dimensions (W × H × D):
73 × 199 × 67 mm
Weight:
0.61 kg
Request Control Unit CU250S-2 PN
Control Unit CU230P-2 HVACواحد کنترل ویژهٔ پمپ، فن و کمپرسور با رابط RS485 برای USS، Modbus RTU، BACnet MS/TP و FLN P1؛ ۴ ورودی آنالوگ و ۴ کنترلر PID آزاد6SL3243-0BB30-1HA3Exact code
Communication:
USS, Modbus RTU, BACnet MS/TP, FLN P1
Inputs and outputs:
6 DI, 4 AI, 2 AO, 3 DO
Safety functions:
STO (with PM240-2 FSD to FSG)
Dimensions (W × H × D):
73 × 199 × 65.5 mm
Weight:
0.61 kg
Request Control Unit CU230P-2 HVAC
Power Module PM240-2, 200 V, 0.55 kW (FSA)پاور مدول PM240-2 ردهٔ ۲۰۰ ولت، ۰٫۵۵ کیلووات، بدون فیلتر شبکه، با ورودی تک‌فاز یا سه‌فاز؛ فریم‌سایز FSA6SL3210-1PB13-0UL0Exact code
Rated power (LO):
0.55 kW
Rated power (HO):
0.37 kW
Line voltage:
1 AC / 3 AC 200 … 240 V ±10 %
Line filter:
Unfiltered
Braking chopper:
Integrated
Frame size:
FSA
Dimensions (W × H × D):
73 × 196 × 165 mm
Weight:
1.40 kg
Request Power Module PM240-2, 200 V, 0.55 kW (FSA)
Power Module PM240-2, 400 V, 1.5 kW (FSA, filtered)پاور مدول PM240-2 ردهٔ ۴۰۰ ولت، ۱٫۵ کیلووات، با فیلتر شبکهٔ کلاس A؛ فریم‌سایز FSA6SL3210-1PE14-3AL1Exact code
Rated power (LO):
1.50 kW
Rated power (HO):
1.10 kW
Line voltage:
3 AC 380 … 480 V ±10 %
Line filter:
Class A
Braking chopper:
Integrated
Frame size:
FSA
Dimensions (W × H × D):
73 × 196 × 165 mm
Weight:
1.55 kg
Request Power Module PM240-2, 400 V, 1.5 kW (FSA, filtered)
Power Module PM240-2, 400 Vپاور مدول PM240-2 ردهٔ ۴۰۰ ولت، ۱۵ کیلووات، IP20 و بدون فیلتر شبکه، با چاپر ترمز داخلی؛ فریم‌سایز FSC6SL3210-1PE23-3UL0Exact code
Rated power (LO):
15.00 kW
Rated power (HO):
11.00 kW
Line voltage:
380 … 480 V ±10 %
Line filter:
Unfiltered
Braking chopper:
Integrated
Degree of protection:
IP20 / UL open type
Frame size:
FSC
Dimensions (W × H × D):
140 × 355 × 165 mm
Weight:
4.80 kg
Request Power Module PM240-2, 400 V
Power Module PM240-2, 400 V, 132 kW (FSF)پاور مدول PM240-2 ردهٔ ۴۰۰ ولت، ۱۳۲ کیلووات، بدون فیلتر شبکه؛ فریم‌سایز FSF با راکتور DC داخلی6SL3210-1PE32-5UL0Exact code
Rated power (LO):
132.00 kW
Rated power (HO):
110.00 kW
Line voltage:
3 AC 380 … 480 V ±10 %
Line filter:
Unfiltered
Braking chopper:
Integrated
Frame size:
FSF
Dimensions (W × H × D):
305 × 708 × 357 mm
Weight:
62.00 kg
Request Power Module PM240-2, 400 V, 132 kW (FSF)
Power Module PM240-2, 400 V, 250 kW (FSG, filtered)پاور مدول PM240-2 ردهٔ ۴۰۰ ولت، ۲۵۰ کیلووات، با فیلتر شبکهٔ کلاس A (دستهٔ C2)؛ بزرگ‌ترین فریم‌سایز FSG6SL3210-1PE34-8AL0Exact code
Rated power (LO):
250.00 kW
Rated power (HO):
200.00 kW
Line voltage:
3 AC 380 … 480 V ±10 %
Line filter:
Class A (Category C2)
Braking chopper:
Integrated
Frame size:
FSG
Dimensions (W × H × D):
305 × 1000 × 357 mm
Weight:
122.00 kg
Request Power Module PM240-2, 400 V, 250 kW (FSG, filtered)
Power Module PM240-2, 690 V, 11 kW (FSD)پاور مدول PM240-2 ردهٔ ۶۹۰ ولت، ۱۱ کیلووات، بدون فیلتر شبکه؛ فریم‌سایز FSD، کوچک‌ترین توان ردهٔ ۶۹۰ ولت6SL3210-1PH21-4UL0Exact code
Rated power (LO):
11.00 kW
Rated power (HO):
7.50 kW
Line voltage:
3 AC 500 … 690 V ±10 %
Line filter:
Unfiltered
Braking chopper:
Integrated
Frame size:
FSD
Dimensions (W × H × D):
200 × 472 × 237 mm
Weight:
17.40 kg
Request Power Module PM240-2, 690 V, 11 kW (FSD)
Show 3 more models
Models and codes
ModelOrder codeCode typeAttributesRequest
Power Module PM240-2, 690 V, 250 kW (FSG, filtered)پاور مدول PM240-2 ردهٔ ۶۹۰ ولت، ۲۵۰ کیلووات، با فیلتر شبکهٔ دستهٔ C3؛ فریم‌سایز FSG6SL3210-1PH32-5CL0Exact code
Rated power (LO):
250.00 kW
Rated power (HO):
200.00 kW
Line voltage:
3 AC 500 … 690 V ±10 %
Line filter:
Category C3
Braking chopper:
Integrated
Frame size:
FSG
Dimensions (W × H × D):
305 × 1000 × 357 mm
Weight:
114.00 kg
Request Power Module PM240-2, 690 V, 250 kW (FSG, filtered)
Power Module PM250, 7.5 kW (FSC, filtered)پاور مدول PM250 با فیلتر شبکهٔ کلاس A که انرژی ترمز را مستقیم به شبکه برمی‌گرداند و به مقاومت ترمزی نیاز ندارد؛ ۷٫۵ کیلووات، فریم‌سایز FSC6SL3225-0BE25-5AA1Exact code
Rated power (LO):
7.50 kW
Rated power (HO):
5.50 kW
Line voltage:
3 AC 380 … 480 V ±10 %
Line filter:
Class A
Energy recovery:
Into the line supply
Frame size:
FSC
Dimensions (W × H × D):
189 × 334 × 185 mm
Weight:
7.50 kg
Request Power Module PM250, 7.5 kW (FSC, filtered)
Power Module PM240-2 Push Throughنسخهٔ push-through از PM240-2 (۷٫۵ کیلووات، ۴۰۰ ولت، بدون فیلتر) برای نصب روی دیوارهٔ تابلو، با درجهٔ حفاظت IP20-PT؛ در SiePortal «spare part» با وضعیت «Prod. Cancellation» ثبت شده است6SL3211-1PE21-8UL0Exact code
Rated power (LO):
7.50 kW
Rated power (HO):
5.50 kW
Line voltage:
3 AC 380 … 480 V ±10 %
Line filter:
Unfiltered
Mounting:
Push-through
Frame size:
FSB
Dimensions (W × H × D):
154 × 345 × 171 mm
Weight:
3.60 kg
Request Power Module PM240-2 Push Through

Technical specifications

Check the specifications against the data sheet of the exact code before ordering.
مشخصات عمومی
Power rangePower range0.55 … 250 kW
Voltage familiesVoltage families200 V, 400 V, 690 V
Line voltage (200 V class)Line voltage (200 V class)200 … 240 ±10 % (1 AC or 3 AC up to 4 kW; 3 AC above) V AC
Line voltage (400 V class)Line voltage (400 V class)380 … 480 ±10 % V AC
Line voltage (690 V class)Line voltage (690 V class)500 … 690 ±10 % (3 AC, from 11 kW) V AC
Line frequencyLine frequency47 … 63 Hz
Frame sizesFrame sizesPM240-2: FSA, FSB, FSC, FSD, FSE, FSF, FSG; PM250: FSC, FSD, FSE, FSF
Degree of protectionDegree of protectionIP20 / UL open type
Power section technologyPower section technologyIGBT, PWM
Ambient temperature (operation)Ambient temperature (operation)PM240-2: -10 … 40 (FSA-FSC) or -20 … 40 (FSD-FSG) without derating; PM250: 0 … 40; up to 60 with derating (low overload) °C
Output frequencyOutput frequency0 … 550 (V/f), 0 … 240 (vector) Hz
Rated pulse frequencyRated pulse frequency4 (200 V; 400 V up to 90 kW; PM250), 2 (400 V above 90 kW; 690 V) kHz
Overload capabilityOverload capabilityLO: 150 % for 3 s then 110 % for 57 s; HO: 200 % for 3 s then 150 % for 57 s (300 s cycle)
Energy efficiency classEnergy efficiency classIE2 (IEC 61800-9-2), PM240-2
Converter efficiencyConverter efficiencyPM240-2: >96.2 … 97.1 % (200 V), >96.0 … 98.0 % (400 V), >97.3 … 98.2 % (690 V); PM250: 96.5 … 97.6 %
Motor cable length (max.)Motor cable length (max.)PM240-2, shielded / unshielded: FSA-FSC 50 / 100 m; FSD-FSE 200 / 300 m; FSF-FSG 300 / 450 m; shorter with the integrated filter in category C2
EMC category (EN 61800-3)EMC category (EN 61800-3)C2 with integrated Class A filter; C3 for 690 V FSF and FSG with integrated filter; C4 without filter on IT supplies
Standards and approvalsStandards and approvalsCE, UKCA, cULus, RCM, SEMI F47, RoHS, EAC; KC with a Category C2 line filter (PM240-2)
Protection functionsProtection functionsUndervoltage, overvoltage, overload, ground fault, short circuit, stall protection, motor blocking protection, motor and converter overtemperature, parameter locking
کنترل
Control modesControl modesV/f (linear, square-law, parameterizable, FCC, ECO), sensorless vector control, sensorless torque control; vector and torque control with encoder (CU250S-2)
BrakingBrakingPM240-2: integrated braking chopper with external braking resistor, DC braking, compound braking; PM250: energy recovery into the line supply
PositioningPositioningBasic positioner (EPos) on the CU250S-2 with the Extended Functions licence; incremental or absolute (SSI) encoder
Technology functionsTechnology functionsFree function blocks on all control units; CU230P-2: 4 free PID controllers, cascade connection, hibernation mode, essential service mode, multi-zone control; CU240E-2 and CU250S-2: 1 PID controller, motor holding brake
ورودی و خروجی
Integrated inputs and outputsIntegrated inputs and outputsCU240E-2: 6 DI, 2 AI, 2 AO, 3 DO (2 relay, 1 transistor); CU230P-2: 6 DI, 4 AI, 2 AO, 3 DO; CU250S-2: 11 DI + 4 DI/DO, 2 AI, 2 AO, 3 DO
Motor temperature sensor inputsMotor temperature sensor inputs1 (PTC, Pt1000, KTY, bimetal); 2 on the CU250S-2
Encoder interfacesEncoder interfacesCU250S-2: DRIVE-CLiQ, HTL/TTL/SSI (SUB-D), resolver/HTL (terminals)
ایمنی
Safety integrity levelSafety integrity levelSIL 2 (EN 61508), PL d (EN ISO 13849-1)
Safety functionsSafety functionsSTO, SS1, SBC, SLS, SDI, SSM
Safety functions by control unitSafety functions by control unitCU240E-2 (USS, DP, PN) and CU230P-2: STO; CU240E-2 F, DP-F, PN-F: STO, SS1, SLS, SDI, and SSM on DP-F and PN-F over PROFIsafe; CU250S-2: STO, SBC, SS1, and SLS, SDI, SSM with the extended safety licence
Safety interfacesSafety interfacesFail-safe inputs: 1 (CU240E-2), 3 (CU240E-2 F types, CU250S-2), plus one more for STO on PM240-2 FSD-FSF; fail-safe output: 1 (CU250S-2); PROFIsafe on the DP and PN versions
STO via Power Module terminalsSTO via Power Module terminalsSIL 3 (IEC 61508), PL e (EN ISO 13849-1) with PM240-2 FSD to FSG; the converter's mission time is restricted
ارتباطات
Fieldbus protocolsFieldbus protocolsPROFINET, EtherNet/IP, PROFIBUS DP, USS, Modbus RTU, BACnet MS/TP, FLN P1, CANopen
Fieldbus by control unitFieldbus by control unitCU240E-2 and CU250S-2: USS/Modbus RTU, DP (PROFIBUS DP), PN (PROFINET, EtherNet/IP); CU230P-2: HVAC (USS, Modbus RTU, BACnet MS/TP, FLN P1), DP, PN; CU250S-2 CAN: CANopen
Communication profilesCommunication profilesPROFIdrive V4.1 (PROFIBUS DP, PROFINET), PROFIsafe (DP and PN versions of CU240E-2 and CU250S-2), PROFIenergy (PROFINET), ODVA AC drive and SINAMICS profile (EtherNet/IP)
Interface speedsInterface speedsPROFIBUS DP up to 12 Mbit/s; PROFINET 100 Mbit/s full duplex (2 × RJ45); USS up to 187.5 kBaud; Modbus RTU 19.2 kBaud; CANopen up to 1 Mbit/s
مهندسی
Commissioning softwareCommissioning softwareSINAMICS Startdrive (TIA Portal), STARTER
Operator panels and toolsOperator panels and toolsBOP-2, IOP-2, IOP-2 Handheld, SINAMICS G120 Smart Access (CU230P-2, CU240E-2), USB interface and SD/MMC memory card slot on the control unit
FirmwareFirmware4.7 SP14 (list manuals 02/2023 for CU240B-2, CU240E-2 and CU230P-2)

Modules and accessories

  • Intelligent Operator Panel IOP-2

    Operator panel with a graphical display and commissioning wizards

  • Basic Operator Panel BOP-2

    Two-line operator panel for basic commissioning and monitoring

  • SINAMICS G120 Smart Access

    Optional web server module for wireless commissioning, operation and diagnostics from a phone or laptop; plugs directly onto the CU230P-2 and CU240E-2 control units

  • SINAMICS SD memory card

    512 MB memory card that stores the converter's parameters; after a converter is replaced the settings are loaded back from the card, and it can also upgrade the control unit's firmware

  • Door mounting kit for IOP-2/BOP-2

    Kit for mounting the IOP-2 or BOP-2 in a control-cabinet door with a few simple steps; gives IP55/UL Type 12 protection

  • Brake Relay

    Relay that connects an electromechanical motor brake to the power module so that the brake is controlled directly from the control unit

  • Safe Brake Relay

    Safe brake relay for the SBC function; lets the CU250S-2 control the motor brake directly and safely, to SIL 2 and PL d

  • Braking resistor

    External braking resistor for regenerative operation of the PM240-2 power module

  • Line reactor

    Line reactor that smooths the current drawn from the supply and reduces harmonics; for the PM240-2 only; not needed on FSD to FSG because of the integrated DC reactor, and not to be used with the PM250

  • Class B line filter

    External Class B line filter for the 400 V PM240-2 in frame sizes FSA to FSC, for stricter EMC requirements

  • Line Harmonics Filter

    Line harmonics filter for the PM240-2 in FSD to FSG; brings THD(I) below 5 % and makes IEC 61000-3-12, IEC 61000-2-2 and IEEE 519 attainable regardless of the line impedance; with it no line reactor or line filter is needed

  • Output reactor

    Output reactor that reduces the voltage rise rate (dv/dt) and current peaks and allows longer motor cables

Documents

Applications

  • Conveyors and material handling
  • Cranes and stacker cranes
  • Pumps and fans
  • Continuous processes needing speed and torque accuracy
  • Positioning of single or coordinated axes

Frequently asked questions

What is the difference between the control unit and the power module, and which is chosen first?

The power module supplies the motor and is chosen from the motor's power and voltage. The control unit controls and monitors the motor and is chosen from the fieldbus and the safety functions you need. The usual order is the power module from the motor first, then the control unit from the automation system.

Is a separate safety relay needed for the safety functions?

No. The safety functions STO, SS1, SBC, SLS, SDI and SSM are integrated in the drive, up to SIL 2 to EN 61508 and PL d to EN ISO 13849-1.

Which control units work with the PM240-2 power module?

The PM240-2 hardware manual lists CU240B-2, CU240E-2 and CU250S-2; the 2023 edition of the same manual adds CU230P-2.

What software is used to commission the G120?

With SINAMICS Startdrive inside TIA Portal, in the same project as the PLC and the HMI.

How do I choose between the CU230P-2, CU240E-2 and CU250S-2 control units?

Siemens' catalog separates the three series by application. The CU230P-2 is made for pumps, fans and compressors: four free PID controllers, more analog inputs for pressure and temperature sensors, hibernation mode and cascade control; its HVAC version also speaks BACnet MS/TP. The CU240E-2 is for general machine building such as conveyors, mixers and extruders, with 6 digital inputs, 2 analog inputs and one PID controller. The CU250S-2 is for complex single drives such as extruders and centrifuges and for positioning: it takes an encoder, gives STO, SBC and SS1, and the EPos positioner and the extended safety functions can be added by licence. Choose by the inputs and outputs, fieldbus and safety you need, then pick the power module that fits the motor.

Which G120 control units come with PROFINET, and is EtherNet/IP supported too?

Four control units have a PROFINET version: the CU240E-2 PN, 6SL3244-0BB12-1FA0; its fail-safe sibling the CU240E-2 PN-F, 6SL3244-0BB13-1FA0; the CU250S-2 PN, 6SL3246-0BA22-1FA0; and the CU230P-2 PN, 6SL3243-0BB30-1FA0. According to Siemens' catalog every PN unit carries both PROFINET (with the PROFIdrive and PROFIenergy profiles, 100 Mbit/s, two RJ45 ports) and EtherNet/IP (with the ODVA AC drive profile and the SINAMICS profile); the PN versions of the CU240E-2 and CU250S-2 also include PROFIsafe. For PROFIBUS DP, choose the DP version of the same control unit.

Which safety functions does each control unit give?

It depends on the control unit, not just on the family. STO comes with every CU240E-2, CU250S-2 and CU230P-2 (the CU230P-2 only with PM240-2 frame sizes FSD to FSG, PM240P-2 FSD to FSF or the PM330). The F versions, CU240E-2 F, DP-F and PN-F, add SS1, SLS and SDI, and on the DP-F and PN-F also SSM over PROFIsafe. The CU250S-2 gives STO, SBC and SS1 as standard (SBC needs the Safe Brake Relay), and SLS, SDI and SSM with the licence for the extended safety functions. None of them needs an encoder, and they reach SIL 2 and PL d. SS1, SLS, SDI and SSM are not permitted on pulling loads such as hoists and unwinders. With PM240-2 frame sizes FSD to FSG, STO can also be wired to terminals on the power module itself, at SIL 3 and PL e; the converter's mission time is then restricted.

How do I read a PM240-2 article number, and how do I choose the line filter?

In the legend of Siemens' catalog, the letter in front of the final L0 of a PM240-2 article number shows the integrated line filter: U for none, A for Class A (Category C2 on frame size FSG) and C for Category C3 (FSG only); the catalog lists the final 0 as the standard heat sink. So 6SL3210-1PE23-3UL0 is the 15 kW, 400 V, FSC module without filter, and 6SL3210-1PE23-3AL0 the same module with a Class A filter. The middle group gives the rating: for example 1PE23-3 is 32 A, 15 kW at low overload (LO). A Class A filter suits TN supplies; a module without filter runs on grounded TN/TT and on IT supplies, but then the installer has to provide the radio-interference suppression to reach Category C3 or C2. Some small-frame codes end in L1, a digit the catalog does not explain.

Is a braking resistor always needed, or can the G120 feed energy back to the line?

With the PM240-2 the braking chopper is built in, but the excess DC-link energy has to be dissipated in an external braking resistor; these resistors are designed for the PM240-2, and for an EMC-compliant connection on frame sizes FSD to FSG the matching shield connection kit must be ordered as well. With the PM250 power module (7.5 kW to 90 kW, frame sizes FSC to FSF, 380 V to 480 V only) the braking energy is fed straight back into the line supply (Efficient Infeed Technology), so no braking resistor, braking chopper or line reactor is needed; Siemens states that no line reactor may be used with the PM250.

Need SINAMICS G120 frequency converter?

Send your order code or requirement; after a technical review we give you the price and delivery time.