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Installing/Mounting
4.2 Electrical Installation
Power Modules PM240
Hardware Installation Manual, 2006-04-04, A5E00807525B AA
4-11
Connecting example
The figure below shows the recommended power and motor connections when installing a
SINAMICS G120 inverter.
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Figure 4-10 Motor and power connections
Operation with ungrounded (IT) supplies
IT supplies are fully isolated from the protective earth system, usually by an isolating
transformer. It should be noted, however, that a protective earth is still provided.
Warning
SINAMICS G120 Power Modules with built-in filters or external filters must not be used with
IT supplies.
SINAMICS G120 Power Modules connected to IT supplies must have their internal 'Y'
capacitors disconnected (see below). If the SINAMICS G120 Power Module connected to an
IT supply is required to remain operational if an input or output phase is connected to
ground, then an output choke must be fitted to prevent tripping.
Operation of the SINAMICS G120 Power Modules without a protective earth is not permitted
under any circumstances.
For more information on chokes, please refer to the product catalog.
Operation with Residual Current Devices (RCD)
If an RCD (also referred to as an ELCB or a RCCB) is fitted, the SINAMICS G120 Power
Module will operate without nuisance tripping provided that:
• A type B RCD is used.
• The trip limit of the RCD is 300 mA.
• The neutral of the supply is grounded.
• Only one SINAMICS G120 power module is supplied from each RCD.
• The output cables are less than 50 m (164 ft) screened or 100 m (328 ft) unscreened.
Avoiding Electromagnetic Interference (EMI)
The inverters are designed to operate in an industrial environment where a high level of EMI
can be expected. Most installations do not give problems. However, it is good engineering
- SINAMICS 1
- SINAMICS G120 3
- Power Modules PM240 3
- Table of contents 5
- Available documentation 7
- Description of the documents 7
- Brochure 7
- Catalog 7
- Getting started Guide 7
- Operating Instructions 8
- Hardware Installation Manual 8
- Parameter List 8
- Safety Instructions 9
- General 9
- Risk of electric shock 10
- Transport and storage 10
- Commissioning 11
- Mechanical installation 11
- Electrical installation 12
- Operation 13
- Dismantling and disposal 14
- Control Units 15
- Power Modules 15
- Overview 15
- 3.3 Block diagram PM240 17
- Control Unit accessories 18
- Power Module accessories 18
- Power Module spare parts 18
- Overwiew 19
- Distances to other equipment 19
- Installing/Mounting 20
- 4.1 Mechanical Installation 20
- Installing/Mounting 21
- Permissable Cable Length 22
- Power Distribution Systems 23
- TN-S Power System 23
- TN-C-S Power System 24
- TN-C Power System 24
- TT Power System 25
- IT Power System 25
- Reforming the capacitors 26
- FSD/E: M6: 6 Nm/53 lbf.in 28
- FSF: M8: 13 Nm/115 lbf.in 28
- FSB: 1.5 Nm/13.27 lbf.in 28
- FSC: 2.25 Nm/19.91 lbf.in 28
- FSA: 1.1 Nm/9.7 lbf.in 28
- Connecting example 29
- Actions to take 30
- Screening methods 30
- Motor Circuit 32
- 87 Hz characteristic 34
- Operation (hardware) 37
- Ambient operating conditions 39
- Temperature 39
- Humidity range 40
- Altitude 40
- Shock and vibration 40
- Electromagnetic radiation 40
- Atmospheric pollution 41
- Installation and cooling 41
- Technical data 42
- 6.1 Mechanical Data 42
- Power and motor connections 43
- Air cooling requirements 44
- Braking resistor data 45
- 6.2 Electrical Data 46
- Technical data 47
- 6.2 Electrical Data 47
- SINAMICS G120 Power Module 50
- Dimension drawings 53
- 7.1 Dimensions of the PM240 54
- Dimension drawings 55
- PPರ 59
- PPರ 59
- PPರ 59
- Replacing a Cooling Fan 61
- Spare parts/Accessories 62
- 8.1 Replacing a Cooling Fan 62
- DIN rail mounting kit 63
- NEMA 1 kit 63
- Screen termination kit 64
- Brake modules 64
- Chokes and filters 65
- Braking resistor 66
- 8.3 Brake Control Relays 68
- Spare parts/Accessories 69
- 8.3 Brake Control Relays 69
- Self certification 71
- Technical construction file 71
- EMC Standards 71
- First Environment 72
- Second Environment 72
- Appendix 73
- EMC Emissions 74
- Harmonic Currents 74
- EMC Immunity 75
- A.4 Standards 76
- List of abbreviations 77
- A.4 Standards 78
- List of abbreviations 79
- A.4 Standards 79
- Index 84
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