Inputs And Outputs - Siemens S5-155U System Manual

Power Supply Units

Inputs and outputs

SIEMENS
Enable
AC line 50/60 Hz Power supply
AC 120V 4,5A
AC 230V 2,6A
EN UH
CAUTION!
Voltage
Disconnect
selector
before
removing
power supply!
L1 N
3
1 2 4
Unlock
fan
A B C
4 - 24
Based on the example of the 6ES5 955-3LF41 power supply unit, the
following figure shows the arrangement of inputs and outputs on the
front plate of the power supply units:
Voltage Monitor Fan
Input Fault Fan Warning
DC 24V Ext. max. AC 250V/3A
Power
+ - 1 2 3
I O
5 6 8 9 10
7
Unlock
fan
D E
The following table provides an overview of the labelling and purpose
of the inputs and outputs:
ID Label
A AC 120V 4.5A
AC 230V 2.6A
B EN
C U
H
D Input
DC 24V Ext.
E Fan Warning
max. 250V/3A
F Fan Alarm
max. 250V/3A
G Battery
Warning
max. 250V/3A
H 3V = 40A
I Output
DC 24V 2.8A
J Ext.Batt.
4.5V DC
DC 5/15/24V
Battery Internal
Fan Alarm Warning Output
DC 24V 2,8A
max.AC 250V/3A
+
1 2 3 1 2 3 -
11 12 13 14 15 16 17 18
Unlock
fan
F G H I
Element Purpose
Screw terminals AC connection and
1, 2, 3 protective conductor
Screw terminal 4 Enable Power Supply
Control input for power
supply
Screw terminal 5 Supply for EN
Screw terminals Voltage Monitor
6 and 7 Monitors 24 V load voltage
for > 16 V
Screw terminals Indicates failure of a fan
8, 9, 10 (relay)
Screw terminals Indicates failure of at least
11, 12, 13 two fans and inadequate air
(relay) flow; if jumper set
accordingly, output enable
is the second signal source
Screw terminals Indicates that lithium bty or
14, 15, 16 rechargeable bty has
(relay) dropped below limit
2 test sockets Current measurement
sockets for test purposes
only; no continuous
operation; linearity range
0.5 V/6.6 A to 3 V/40 A
Screw terminals Enable voltage for I/O
17, 18 modules
2 input sockets Input for an external 4.5 V
backup voltage
C79000-B8576-C199-03
Ext.Batt.
DC 4,5V
+
-
Batt. 3,6V/5Ah
Replace by
trained personnel
only!
J
System Manual