Siemens S5-135U/155U appendix Connecting the Signal Lines, Type

Digital Input/Output Modules

8.2.4 Connecting the Signal Lines

The modules have 20 or 42-way blade connectors with contact blades measuring 2.4 x 0.8 mm. Front connectors for 20 and 40 mm mounting width with crimp connection and 40 mm mounting width with screw connection are provided to connect the signal lines (screwdriver blade width: 3.5 mm, maximum torque: 0.8 Nm).

Use stranded conductor to facilitate handling of the front connector.

When the crimp contact is inserted in the plastic body of the front connector, a click can clearly be heard. This indicates that the contact is engaged. For jumpering or to correct the wiring, you can remove the contacts with a releasing tool (see ordering information) without having to pull out the front connector.

Ferrules are not required for screw connections, because the screw terminals are provided with wire protection. You can use ferrules of 7 mm in length to DIN 46228. The maximum terminal area is 2 x 2.5 mm2.

Terminal

Type

Crimp Connec- tion

Screw Connec- tion

Connector Type 6ES5 497-

4UA12

4UA22

4UA42

4UB12

4UB32

4UB22

4UB42

Max. No. of Con- tacts

42

42

20

42

25

20

Cross-Sec. of Signal or Sup- ply Conductor

0.5 to 1.5 mm2

0.5 to 1.5 mm2

0.5 to 1.5 mm2

0.5 to

2 x 2.5 mm2

0.5 to

2 x 2.5 mm2

0.5 to

2 x 2.5 mm2

Connector for	Front
Rated Voltage	Con-
	nector
	Width
5 to 60 V DC	20 mm

5 to 60 V DC 40 mm

24 to 230 V AC	40 mm
5 to 60 V DC	40 mm
	20 mm
5 to 60 V DC	40 mm
24 to 230 V AC	40 mm

Module 6ES5-

For Operation

With Fan	Without Fan
420. 430.
	±
431, 432.
434, 441,
451, 454-14,
458
453, 454, 457	420. 430.
	431, 432.
	434, 441,
	451, 453,
	454, 457,
	458

435, 436, 455, 456

420.430. 431, 432. 434, 441, 451, 453, 454, 457, 458

454

435, 436, 455, 456

!

Caution

Only extra-low voltage v 60 V DC with safety separation from system voltage may be used for the 24 V DC supply and for the 24 V DC input signals. Safety separation can be implemented to the requirements of, amongst other sources, VDE 0100 Part 410/HD 384-4-41/IEC 364-4-41 (as functional extra-low voltage with safety separation) or

VDE 0805/EN 60950/IEC 950 (as safety extra-low voltage SELV) or VDE 0106 Part 101.

System Manual	8-21
C79000-G8576-C199-06