Troubleshooting With The Sdp; Table 4-1 Inverter Conditions Indicated By The Leds On The Sdp - Siemens MICROMASTER 420 Operating Instructions Manual

4 Troubleshooting
WARNING
Repairs on equipment may only be carried out by Siemens Service , by repair
centers authorized by Siemens or by qualified personnel who are thoroughly
acquainted with all the warnings and operating procedures contained in this
manual.
Any defective parts or components must be replaced using parts contained in
the relevant spare parts list.
4.1

Troubleshooting with the SDP

Table 4-1 explains the
meaning of the various
states of the LEDs on
the SDP.
Table 4-1
Mains not present
Ready to run
Inverter fault - other than the
ones listed below
Inverter running
Fault overcurrent
Fault overvoltage
Fault motor overtemperature
152
Inverter conditions indicated by the LEDs on the SDP
LEDs for indicating the drive
state
Off
On
approx. 0,3 s, flashing
approx. 1 s, twinkling
Fault inverter temperature
Warning current limit - both
LEDs twinkling same time
Other warnings - both LEDs
twinkling alternatively
Undervoltage trip /
undervoltage warning
Drive is not in ready state
ROM failure - Both LEDs
flashing same time
RAM failure - Both LEDs
flashing alternatively
MICROMASTER 420 Operating Instructions
6SE6400-5AA00-0BP0
Issue 07/04