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

Analog Input/Output Modules

9.7.7 Connecting the Signal Lines

For connection of the signal lines, front connectors for 20 and 40 mm mounting width with crimp connection and 40 mm mounting width with screw connection are available (screwdriver blade width: 3.5 mm, maximum torque: 0.8 Nm).

Use stranded conductor to facilitate handling of the front connector. Ferrules are not required for screw connections, because the screw terminals are provided with wire protection.

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	Connector
Type	Type
	6ES 497-
Crimp con-	-4UA12 2)
nection
	-4UA22 2)
Screw con-	-4UB12
nection
	-4UB31

Max.	Cross-Section
No. of
	Signal or Supply	Aux. Jumper
Contacts
	Conductor	in Connector
		1)
42	0.5 mm 2	0.5 mm 2
42	0.5 mm 2	0.5 mm 2
42	0.5 to 2.5 mm 2	0.5 to 1.0 mm 2
42	0.5 to 1.5 mm 2	0.5 to 1.0 mm 2

Connector for	Mounting Width of
Rated Voltage	Module
5 to 60 V DC	20 mm Operation
		with fan
5 to 60 V DC	40 mm
		Operation
5 to 60 V DC	40 mm
		without fan
5 to 60 V DC	20 mm

1)To multiply the supply and 0 V ground terminals, and to connect the enable input

2)The crimp contacts must be ordered separately for these types of connector.

!

Caution

Only extra-low voltage 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.

9-108	System Manual
	C79000-G8576-C199-06