WEG SSW900 Series Instructions for use

Motors | Automation | Energy | Transmission & Distribution | Coatings
Pump Cleaning
SSW900
Application Manual

Pump Cleaning Application Manual
Series: SSW900
Language: English
Document: 10008639547 / 00
Publication Date: 05/2021

Summary of the Revisions
The information below describes the revisions made to this manual.
Version
Revision
Description
-
R00
First edition

Table of Contents
1PARAMETER STRUCTURE................................................................... 1
2FAULTS AND ALARMS.......................................................................... 2
3GENERAL INFORMATION..................................................................... 3
3.1. ABOUT THE MANUAL........................................................................................................................3
3.2. ABOUT THE PUMP CLEANING APPLICATION ...............................................................................3
4RECOMMENDED SET-UP..................................................................... 4
4.1. COMMANDS BY DI VIA SOFTPLC....................................................................................................4
5PARAMETER DESCRIPTION ................................................................ 5
5.1. STATUS ...............................................................................................................................................5
5.1.1. S6 SOFTPLC......................................................................................................................5
5.2. SETTINGS ...........................................................................................................................................5
5.2.1. C11 SOFTPLC ...................................................................................................................5
6OPERATION..........................................................................................10
6.1. UNCLOGGING WITH COMMAND TO START THE PUMP (C11.3.2 = 1) ......................................10
6.2. UNCLOGGING WITH COMMAND VIA DIGITAL INPUT DI3 (C11.3.2 = 2)....................................11
6.3. UNCLOGGING WHEN DETECTING PUMP CLOGGING (C11.3.2 = 3)..........................................12
7TROUBLESHOOTING ..........................................................................14
7.1. FREQUENT PROBLEMS ..................................................................................................................14

SSW900 | 1
Parameter Structure
1PARAMETER STRUCTURE
Level 1
Level 2
Level 3
Page
S
Status
S6
SoftPLC
S6.1
SoftPLC Status
5
S6.2
Scan Cycle Time
S6.2
Output Value
S6.4
Parameters
C
Settings
C11
SoftPLC
C11.3
Parameters
5

SSW900 | 2
Faults and Alarms
2FAULTS AND ALARMS
Fault/Alarm
Description
Possible Causes
F708/A708:
SoftPLC Application
Stopped
SoftPLC application is not running.
- SoftPLC application is stopped (C11.1 = Stop
Applications).
- SoftPLC status (S6.1.1) indicates that the
application is incompatible with the SSW900
firmware version.
A750
Clogging Detected
It indicates that clogging has been detected through
the pump motor high current.
F751
Excessive Clogging Events Detected
It indicates that the pump has been switched off
due to an excessive number of clogging events.

SSW900 | 3
General Information
3GENERAL INFORMATION
3.1. ABOUT THE MANUAL
This manual contains the necessary information to configure the Pump Cleaning application, developed with the
SoftPLC function of the SSW900 Soft-Starter.
This application manual must be used together with the SSW900 Programming Manual, SSW900 User Manual,
SoftPLC Function Manual and WPS Software Manual.
ABBREVIATIONS AND DEFINITIONS
PLC Programmable Logic Controller
CRC Cycling Redundancy Check
RAM Random Access Memory
USB Universal Serial Bus
WPSProgramming Software in Ladder Language
Copying the content of this manual, in whole or in part, is prohibited without the written permission of the
manufacturer.
3.2. ABOUT THE PUMP CLEANING APPLICATION
The Pump Cleaning application, developed for the SoftPLC function of the SSW900 Soft-Starer and based on the
existing Pump Genius Simplex of the CFW-11, allows unclogging the pump in order to prevent it from reaching
the complete clogging, which would prevent the pump operation.
Its basic principle is to start the pump in the reverse pumping direction to remove the accumulated residues
and, thus, enable the pump to go into operation again.
NOTE!
This function should only be enabled on a pump that can operate in the reverse pumping direction;
otherwise, it may damage it.

SSW900 | 4
Recommended Set-Up
4RECOMMENDED SET-UP
This chapter presents a recommended set-up, which can be used in whole or in part to assemble the desired
drive.
4.1. COMMANDS BY DI VIA SOFTPLC
2-wire commands
C3 - LOC/REM Selection
C3.1 = 8 (Mode = SoftPLC REM)
C3.3 = 3 (REM command =
SoftPLC)
C4 - I/O
C4.2.3 = 14 (DO3 = Circuit
Breaker Trip)
C11 - SoftPLC
C11.3.2 = 1 (Mode 1) or 3
(Mode 3)
C11.3.12 = 0 (2-wire Run/Stop)
3-wire commands
C3 - LOC/REM Selection
C3.1 = 8 (Mode = SoftPLC REM)
C3.3 = 3 (REM command =
SoftPLC)
C4 - I/O
C4.2.3 = 14 (DO3 = Circuit Breaker
Trip)
C11 - SoftPLC
C11.3.2 = 1 (Mode 1) or 3 (Mode
3)
C11.3.12 = 1 (3-wire Run/Stop)
3-wire command and
unclogging via DI
C3 - LOC/REM Selection
C3.1 = 8 (Mode = SoftPLC
REM)
C3.3 = 3 (REM command =
SoftPLC)
C4 - I/O
C4.2.3 = 14 (DO3 = Circuit
Breaker Trip)
C11 - SoftPLC
C11.3.2 = 2 (Mode 2)
C11.3.12 = 1 (3-wire Run/Stop)
NOTES!
Check the electronics power supply. “Control Supply” connector.
Optional. It is recommended to use a PTC, thermostat connected to a digital input programmed for external fault or PT100
accessory.
Run/Stop command via digital input DI1 with 2 wires via SoftPLC.
Run/Stop command via digital input DI with 3 wires via SoftPLC. Run DI1 and Stop DI2.
Activation of the pump unclogging via pulse at digital input DI3.
Use a digital output programmed for "Circuit Breaker Trip" fault to open the circuit breaker when a fault occurs on the SSW
power circuit.
In case of maintenance on the SSW or on the motor, it is necessary to disconnect the power supply input so as to ensure the
full disconnection of the equipment from the supply line.
In case of damages on the SSW power circuit which keep the motor running by short circuit, the motor protection is
obtained by using the power isolation contactor (K1) or circuit breaker (Q1) controlled by the SSW.
Coordination Type 1 – use a circuit breaker for short circuit protection on the input circuit.
Use a shunt trip on the circuit breaker to open the circuit breaker via digital output of the SSW.
Optional. Coordination Type 2 – use aR high speed fuses for semiconductor protection.