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simatic s7-400 - Teknika Otomasyon

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SIMATIC S7-<strong>400</strong><br />

Connection methods<br />

© Siemens AG 2008<br />

5<br />

Fully modular connection<br />

■ Overview (continued)<br />

Function modules<br />

Function modules are implemented with digital connection<br />

modules fitted with relays or optocouplers.<br />

If other voltage or power levels are required in the field, the<br />

connection module for output signals TPRo is used. This<br />

converts the 24 V DC output signal simply and reliably to another<br />

voltage or power level. If 230 V AC input signals have to be transmitted<br />

to the controller in the field, a connection module with<br />

relay TPRi is available that converts the 230 V AC signal simply<br />

to 24 V DC. This means you always have the same voltage level<br />

on the module side.<br />

Wiring rules for the front connector modules<br />

Front connector module<br />

SIMATIC TOP connect,<br />

connection for potential supply<br />

Screw connection<br />

Modules up to 4 connections<br />

Connectable cable cross-sections<br />

• solid cables<br />

No<br />

• flexible cables with/without 0.25 to 1.5 mm 2<br />

wire end ferrule<br />

Number of cables per<br />

connection<br />

Max. diameter of the cable<br />

insulation<br />

1 or a combination of 2 conductors up to<br />

1.5 mm 2 (total) in a common wire end<br />

ferrule<br />

3.1 mm<br />

Stripping length of the cables<br />

• without insulating collar 6 mm<br />

• with insulating collar -<br />

Wire-end ferrules to DIN 46228<br />

• without insulating collar Form A; 5 to 7 mm long<br />

• with insulating collar -<br />

0.25 to 1.0 mm 2<br />

• with insulating collar -<br />

1.5 mm 2<br />

Blade width of the screwdriver<br />

3.5 mm (cylindrical shape)<br />

Tightening torque for 0.4 to 0.7 Nm<br />

connecting the cables<br />

■ Technical specifications front connector modules<br />

Technical data of front connector module<br />

Rated operating voltage<br />

Max. permissible operating voltage<br />

24 V DC<br />

60 V DC<br />

Max. permissible continuous<br />

current<br />

1A<br />

• per connector pin<br />

Max. permissible summation 4 A/byte (power supply)<br />

current<br />

Permissible ambient temperature 0 to + 60 °C<br />

Test voltage<br />

0.5 kV, 50 Hz, 60 s<br />

Air gaps and creepage distances IEC 664 (1980),<br />

IEC 664 A (1981),<br />

in accordance with DIN VDE 0110<br />

(01.89),<br />

overvoltage class II, pollution<br />

degree 2<br />

Front connector module<br />

SIMATIC TOP connect,<br />

connection for potential supply<br />

Screw connection<br />

Modules up to 6 connections<br />

Connectable cable cross-sections<br />

• solid cables<br />

No<br />

• flexible cables with/without 0.25 bis 0.75 mm 2<br />

wire end ferrule<br />

Number of cables per<br />

connection<br />

Max. diameter of the cable<br />

insulation<br />

1 or a combination of 2 conductors up to<br />

1.5 mm 2 (total) in a common wire end<br />

ferrule<br />

2.0 mm<br />

Stripping length of the wires<br />

• without insulating collar 6 mm<br />

• with insulating collar -<br />

Wire-end ferrules to DIN 46228<br />

• without insulating collar Form A; 5 to 7 mm long<br />

• with insulating collar -<br />

0.25 to 1.0 mm 2<br />

• with insulating collar -<br />

1.5 mm 2<br />

Blade width of the screwdriver<br />

3.5 mm (cylindrical shape)<br />

Tightening torque for 0.4 to 0.7 Nm<br />

connecting the cables<br />

5/132 Siemens ST 70 · 2009

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