WEG SSW7000, User Manual

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SSW7000 | 10-2
Troubleshooting and Maintenance
10.2. MOST FREQUENT PROBLEMS
Table 10.1: Frequent problem cause
Problem
Most Likely
Causes
Cause Description
The SSW7000 does
not respond to the
commands Fault HMI indication: “FXXX”
The SSW7000 does not allow motor starting during a fault situation. Verify what fault it is.
Refer to the programming manual, chapter 2 - Faults and Alarms
Time interval
after stopping IHMI indication: “TmpP831”
The SSW7000 is waiting the time after the motor stopping, programmed in P0831.
Refer to the programming manual, section 15.9 - Timer Protections.
General enabling IHMI indication: “Des.Ger”
General disabled. Verify the command source. If any DI is programmed for general enable,
this input can disable the soft-starter even if the commands are from other sources.
Refer to the programming manual, section 10.4 - Digital Inputs.
ConFiguretion
mode
HMI indication: “Config”
It indicates that the SSW7000 is in a special condition while it cannot start the motor.
Refer to the programming manual - P0692
Command
source
LOC/REM Verify whether the active command source is Local or Remote.
HMI indication: “LOC” or “REM”
Verify at P0220 what the origin of the LOC/REM selection is.
If in “LOC”, verify which the local command source is.
If in “REM”, verify which the remote command source is.
Refer to the programming manual, section 10.1 - Local/Remote Configuration.
Commands by
HMI – I,O keys
Verify fault conditions, the time after stopping, general enable input, configuration mode and the command
source indicated on the HMI.
Refer to the programming manual, chapter 7 - HMI.
Commands by
DIx – Digital
Inputs Verify fault conditions, the time after stopping, general enable input, configuration mode and the command
source indicated on the HMI.
Verify the type of starting, 2-wire or 3-wire. Refer to the item
5.2.10 - User Signal and Control Connections.
Verify digital input connections, DIx, 24 V and COM. Refer to the item 5.2.10 - User Signal and Control
Connections.
Refer to the programming manual, section 10.4 - Digital Inputs.
Commands by
Serial/USB
Verify fault conditions, the time after stopping, general enable input, configuration mode, and the command
source indicated on the HMI.
Verify at P0682 the commands sent through the Serial/USB.
Verify at P0680 the SSW7000 status word.
Refer to the programming manual - P0680 and P0682 and to the serial communication manual.
Commands by
Anybus-CC
Verify fault conditions, the time after stopping, general enable input, configuration mode, and the command
source indicated on the HMI.
Verify at P0686 the commands sent through the Anybus-CC.
Verify at P0680 the SSW7000 status word.
Refer to the programming manual - P0680 and P0686 and to the Anybus-CC communication manual.
Commands by
SoftPLC
Verify fault conditions, the time after stopping, general enable input, configuration mode, and the command
source indicated on the HMI.
It depends on the applicative software being executed in the SoftPLC.
The SoftPLC is controlled through P1001.
Verify at P1000 the SoftPLC status.
Verify at P0680 the SSW7000 status word.
Refer to the programming manual - P0680, P1000 and P1001 and to the SoftPLC manual.
The motor does
not reach the rated
speed Motor does not
start
Current or torque limits are too low for the load applied to the motor.
Motor starts The line voltage is too low or the medium voltage transformers are undersized.
The motor speed is too
high or too low Motor data Verify whether the used motor matches the application requirements.
Jerking during motor
deceleration General
applications The stopping (deceleration) time must only be used with centrifugal hydraulic pump
applications. For other applications P0104 must remain in 0 = Inactive.
Pumps The deceleration control method is not appropriated for the application.
Refer to the programming manual, chapters 11 - Control Type and 20 - Programming
Information and Suggestions.