Siemens Model 240 Installation Manual Page 30
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Installing/Mounting
4.2 Electrical Installation
Power Modules PM240
4-12 Hardware Installation Manual, 2006-04-04, A5E00807525B AA
pratice to conform to the following guidelines - this will reduce the likelihood of problems
during operation.
Actions to take
• Ensure that all equipment in the cubicle is well grounded using short, thick grounding
cable connected to a common star point or busbar.
• Make sure that any control equipment (such as a PLC) connected to the inverter is
connected to the same ground or star point as the inverter using a short thick link.
• Connect the return ground from the motors controlled by the inverters directly to the
ground connection (PE) on the associated inverter.
• Flat conductors are preferred as they have lower impedance at higher frequencies.
• Terminate the ends of the cable neatly, ensuring that unscreened wires are as short as
possible.
• Separate the control cables from the power cables as much as possible, using separate
trunking, if the cables cross they should cross at 90º to each other.
• Whenever possible, use screened leads for the connections to the control circuitry.
• Ensure that the contactors in the cubicle are suppressed, either with R-C suppressors for
AC contactors or 'flywheel' diodes for DC contactors fitted to the coils. Varistor
suppressors are also effective. This is important when the contactors are controlled from
the inverter relay.
• Use screened or armored cables for the motor connections and ground the screen at
both ends using the cable clamps.
Warning
Safety regulations must not be compromised when installing inverters!
Screening methods
For all frame sizes the Screen Termination Kit is supplied as an optional extra. It allows easy
and efficient connection of the necessary screening. For further details on the Screen
Termination Kit, please refer to the SINAMICS G120 catalog.
- 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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