Diagnosis; Indicating And Rectifying Faults; Diagnostics Via Leds; Table 8-4 Leds Of The Power Stack Adapters - Siemens SINAMICS SM150 6SL3815-7NP41-0AA1 Operating Instructions & Installation Instructions

8.6.3

Diagnosis

8.6.3.1

Indicating and rectifying faults

The drive provides many protection functions. These protection functions protect the drive
against damage in a fault situation. A distinction is made between the following messages:
● Fault
● Alarm
8.6.3.2

Diagnostics via LEDs

LEDs of the Power Stack Adapters
Table 8-4 LEDs of the Power Stack Adapters
LED Color
PWR -
Red
Green
SINAMICS SM150 6SL3815-7NP41-0AA1
Operating Instructions Rev.201910281301 EXAMPLE
A fault is a message from the drive indicating a fault or other exceptional (unwanted) state.
The cause can be a fault in the drive itself or also an external fault. This fault, for example,
could have been issued by the winding temperature monitoring of the asynchronous motor.
The faults are displayed and can be reported to a higher-level control system. Once you
have eliminated the cause of the fault, you must acknowledge the fault message.
An alarm is the response to a fault condition identified by the drive, that does not result in the
drive being shutdown. Alarms acknowledge themselves. If the cause is no longer present,
the alarms reset themselves automatically.
Status Description; cause
Off 24 V power supply has failed or is too low
(< 14 V) or internal fuse defective.
Continuous 24 V power supply is available (>14 V);
light internal board voltage fault.
Continuous 24 V power supply OK.
light
Internal board voltages OK.
8.6 Fault and system messages
Remedy
Check input voltage.
If input voltage is > 18 V and LED off:
Return component for repair.
Check input voltage.
If input voltage is > 18 V and LED red:
Return component for repair.
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Operation
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