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4-22
System Manual
C79000-G8576-C199-06
Apart from the jumpers, the LEDs and controls of the power supply unit are
fitted on the front plate. The following figure shows their locations:
6ES5955-3LF42
L1
N
1
2
3
4
5
6
7
8
9 10
11
14
12
15
13
16
17 18
+
+
+
+
–
–
–
–
AC120V4,5A
AC230V2,6A
CAUTION!
Disconnect
before
removing
power supply!
Voltage
selector
Unlock
Fan 1
Unlock
Fan2
Unlock
Fan3/Res.Batt
.
Input
DC 24V Ext.
AC line 50/60 Hz
Enable
Power supply
Voltage Monitor
Fan
Battery
Ext.Batt.
DC 4,5V
Fault
Warning
Alarm
Warning
max. AC 250V/3A
max. AC 250 V/ 3A
V
o
ltage low
Fan1
MB low
Fan2
RB low
5V
o.k.
Fan3
Reset
Alarm
EN UH
Power
I
I
1
234
5
6
7
89
10
Batt. 3,6V/5Ah
Replace by
trained personnel
only!
Use battery holder
C98100-A1155-B21
only!
SIEMENS
Output
DC 24V 2,8A
DC 5/15/24V
Internal
3V=40A
15V
o.k.
24V
o.k.
Batt.+Fan
G
D
A
H
I
F
B
C
L
K
J
M
E
The labelling and purpose of the LEDs and controls are given in the
following table:
ID
Label
Element
Purpose
A
Voltage
selector
1)
Switch
Voltage selector switch:
choice of 120 V or 230 V
B
Power
Switch
Standby On/Off switch (not system
On/Off switch)
C
Voltage low
Red LED
Low voltage at load voltage monitor input
D
Fan 1
Red LED
Failure of Fan 1
E
Fan 2
Red LED
Failure of Fan 2
F
Fan 3
Red LED
Failure of Fan 3
G
Alarm
Red LED
Indicates failure of at least two fans of
insufficient air flow
H
MB low
Yellow LED
Lithium battery/external battery voltage
below preset limit (3V)
I
RB low
Yellow LED
Rechargeable battery voltage below preset
limit (3V)
J
Reset Batt.+Fan
Pushbutton
Reset of LEDs D, E, F, G, H, I when fault
cleared
K
5V o.k.
Green LED
Lights up to indicate output voltage
within permissible range
L
15V o.k.
Green LED
Lights up to indicate output voltage
within permissible range
M
24V o.k.
Green LED
Lights up to indicate output voltage
within permissible range
1)
Only on the 6ES5 955-3LC42 and 6ES5 955-3LF42
LEDs and Controls
Central Controllers and Expansion Units Power Supply Units
Содержание S5-135U
Страница 10: ...x SystemManual C79000 G8576 C199 06 Contents ...
Страница 18: ...1 8 SystemManual C79000 G8576 C199 06 Notes on Using this Manual and on the CE Symbol ...
Страница 26: ...2 8 SystemManual C79000 G8576 C199 06 Centralized and Distributed Configuration of a Programmable Controller ...
Страница 66: ...3 40 SystemManual C79000 G8576 C199 06 Installation Guidelines ...
Страница 496: ...9 114 SystemManual C79000 G8576 C199 06 Analog Input Output Modules ...
Страница 536: ...11 24 SystemManual C79000 G8576 C199 06 Connector Assignments ...
Страница 558: ...Index 8 SystemManual C79000 G8576 C199 06 Index ...