Siemens Simatic S7-1500 Manual - Page 17

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Siemens Simatic S7-1500 Manual
Meaning of the LED displays
The following table explains the meaning of the status and error displays. You can find
remedial measures for diagnostic alarms in chapter Diagnostic alarms (Page 18).
Table 5- 1
Status and error displays RUN/ERROR/MAINT
LED
RUN
ERROR
MAINT
Off
Off
On
On
Not rele-
Not rele-
vant
Flashing
Not rele-
Off
Flashing
Not rele-
vant
Off
Flashing
Flashing
Flashing
Power supply module PS 60W 24/48/60VDC HF (6ES7505-0RB00-0AB0)
Manual, 01/2019, A5E39450002-AB
OFF; PS returns no bus voltage
Off
External error; diagnostics is disabled
PS not powered in the system, no supply voltage
at the PS and CPU/IM.
Startup; all LED displays are lit briefly after system
startup, or during module restart after firmware up-
On
date.
Startup, PS returns bus voltage, PS waiting for pa-
vant
rameterization
Error, PS supplies no bus voltage
vant
Supply voltage missing and diagnostics is ena-
bled
Internal error
Maintenance request, PS returns no bus voltage
On
Switch is off; power is present and diagnostics is
enabled
Malfunction
LEDs flash persistently
Interrupts, diagnostic alarms, error and status alarms
Meaning
5.1 Status and error displays
Remedy
Switch on power to the PS
Check the supply voltage
Switch on PS
-
-
Evaluate diagnostic alarms and
take appropriate remedial
measures; see chapter Diag-
nostic alarms (Page 18)
Switch on PS
Replace PS
17