Potential Faults In Motor Starters With Profibus-Dp; Table 5-1: Faults And Fault Handling For 3Rk1 303-5Bs44-1Aa - Siemens ecofast 3RK1702-2GB18-0AA1 Manual

Fault Handling
5.2

Potential Faults in Motor Starters with PROFIBUS-DP

Motor starter: 3RK1303-2AS54-1AA.
Potential faults
Bus fault
Process image
error
Undervoltage
AS-i
Undervoltage
AUX PWR
No main power
supply
Sensor supply
overload
Temperature
sensor
overload
Temperature
sensor
short-circuit
Temperature
sensor
wire break
Self-test fault
(device fault)
Switching ele-
ment defective
* Once the cause of the fault has been removed, the fault is acknowledged automatically regardless
of the parameters set (not to be confused with autoreset).

Table 5-1: Faults and fault handling for 3RK1 303-5BS44-1AA.

5-4
Action LED
indicator
Switch substi- AS-i: red
tute value
Trip SF: red
Trip SF: red
Trip SF: red
Fault not recognized!
Trip SF: red
Warning/ SF: red
Trip SF: red
Warning/ SF: red
Trip SF: red
Warning/ SF: red
Trip SF: red
Trip SF: red
Trip SF: red
STATE: red
Acknow- Comment
ledged by
*)
Auto Check the communication con-
nection to the field bus master.
Possible causes of faults:
• Bus line severed
• Field bus master defective
OFF Deactivate the Motor CW/CCW
command control command.
*)
Auto Check the power supply.
U < 18 V
DC24V-NS
*)
Auto Check the power supply.
U < 18 V
DC24V-S
If the motor cannot be switched
on even though it is properly
connected and power has been
applied, the internal fuses are
defective. − > Replace the device!
Trip reset Check the sensor supply.
I > 200 mA
Sensor
*)
Auto Wait until the motor has cooled
down.
Autoreset/ Wait until the motor has cooled
trip reset down.
Acknowledge after motor has
cooled down.
If acknowledgement is not pos-
sible, the motor is still too hot.
*)
Auto Remove the short-circuit on the
temperature sensor lead.
Autoreset/ Remove the short-circuit on the
trip reset temperature sensor lead.
Acknowledge once the fault has
been rectified.
*)
Auto Remove the wire break on the
temperature sensor lead.
Autoreset/ Remove the wire break on the
trip reset temperature sensor lead.
Acknowledge once the fault has
been rectified.
Power OFF Switch the device off and then
back on.
Power OFF If a device fault is reported
again, the device must be
replaced.
ECOFAST Motor Starters
GWA 4NEB 950 5221-12 DS 02