Siemens S5-135U/155U appendix Inputs, Outputs, Plate of the power supply units

Central Controllers and Expansion Units Power Supply Units

Inputs and	Based on the example of the 6ES5 955-3LF41 power supply unit, the
Outputs	following figure shows the arrangement of inputs and outputs on the front
	plate of the power supply units:

SIEMENS

AC line 50/60 Hz	Enable
	Power supply

	10	AC120V4,5A
	9	AC230V2,6A			EN	UH
3LF42	8
				CAUTION!	Voltage
	7
				Disconnect
					selector
	6			before			Power
6ES5955-	213 4 5			removing
		1	2
				3
				power supply!
			L1	N			I
					4	5	I
					Unlock
					Fan 1

Voltage Monitor			Fan
Input		Fault		Warning	Alarm
DC 24V Ext.				max. AC 250 V/ 3A
	Voltagelow	Fan1	Fan2 Fan3	Alarm
+	±

6 7 8 9 10 11 12 13

Unlock

Fan2

Battery	DC 5/15/24V
	Internal
Warning	Output
	DC 24V 2,8A

max. AC 250V/3A				Batt.+Fan	3V=40A 5Vo.k. 15Vo.k.
		MB low	RB low			24Vo.k.
					+
				Reset	±	+	±
14	15	16				17	18
					Unlock
			Fan3/Res.Batt
			.

Ext.Batt.

DC 4,5V

+

±

Batt. 3,6V/5Ah

Use battery holder C98100-A1155-B21 only!

Replace by trained personnel only!

The following table provides an overview of the labelling and purpose of the inputs and outputs:

ID Label

AAC 120V 4.5A AC 230V 2.6A

BEN

CUH

DInput

DC 24V Ext.

EFan Warning max. 250V/3A

FFan Alarm max. 250V/3A

GBattery Warning max. 250V/3A

H3V = 40A

IOutput

DC 24V 2.8A

JExt.Batt. DC 4.5V

Element

Screw terminals 1, 2, 3

Screw terminal 4

Screw terminal 5

Screw terminals 6 and 7

Screw terminals 8, 9, 10 (relay)

Screw terminals 11, 12, 13 (relay)

Screw terminals 14, 15, 16 (relay)

2 test sockets

Screw terminals 17, 18

2 input sockets

Purpose

AC connection and protective conductor

Enable Power Supply

Control input for power supply

Supply for EN

Voltage Monitor

Monitors 24 V load voltage for > 16 V

Indicates failure of a fan

Indicates failure of at least two fans and inadequate air flow; if jumper set accordingly, output enable is the second signal source

Indicates that lithium battery or rechargeable battery has dropped below limit

Current measurement sockets for test purposes only; no continuous operation; linearity range 0.5 V/6.6 A to 3 V/40 A

Enable voltage for I/O modules

Input for an external 4.5 V backup voltage

System Manual	4-21
C79000-G8576-C199-06