Indicators And Controls - Siemens S5-155U System Manual

Indicators and controls

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
1 2 3 4
Unlock
fan
A
System Manual
C79000-B8576-C199-03
Apart from the jumpers, the indicators and controls of the power
supply unit are fitted on the front plate. The following figure shows
their locations:
Voltage Monitor Fan
Input Fault Fan Warning
DC 24V Ext. max. AC 250V/3A
Power
+ 1 2 3
-
I O
5 6 7 8 9 10
Unlock
fan
D
F
C E G
B
The labelling and purpose of the indicators and controls are given in
the following table:
ID Label
A Voltage
1)
selector
B Power
C Voltage low
D Fan 1
E Fan 2
F Fan 3
G Alarm
H MB low
I RB low
J Reset
Batt.+Fan
K 5V o.k.
L 15V o.k.
M 24V o.k.
1)
Only on the 6ES5 955-3LC41 and 6ES5 955-3LF41
Power Supply Units
DC 5/15/24V
Battery Internal
Fan Alarm Output
Warning
DC 24V 2,8A
max.AC 250V/3A
3 3 + -
1 2 1 2
11 12 13 14 15 16 17 18
Unlock
fan
K M
I
H J L
Element Purpose
Switch Voltage selector switch:
choice of 120 V or 230 V
Switch Standby On/Off switch (not
system On/Off switch)
Red LED Low voltage at load voltage
monitor input
Red LED Failure of Fan 1
Red LED Failure of Fan 2
Red LED Failure of Fan 3
Red LED Indicates failure of at least two
fans; if jumper is set accordingly,
output enable is the second signal
source.
Yellow Lithium battery/external battery
LED voltage below preset limit (3 V)
Yellow Rechargeable battery voltage
LED below preset limit (3 V)
Pushbutton Reset of LEDs D, E, F, G, H, I
when fault cleared
Green Lights up to indicate output
LED voltage within permissible range
Green Lights up to indicate output
LED voltage within permissible range
Green Lights up to indicate output
LED voltage within permissible range
Ext.Batt.
DC 4,5V
+
-
Batt. 3,6V/5Ah
Replace by
trained personnel
only!
4
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