Sequetrol compact LED

• Easily programmable control unit for Air-SBR wwtp
• Adjusting of the step times can be done on-site using three buttons on the printed circuit board
• Keeps record of last performed step in an event of mains failure
• 5 relay switches (230V)
• Acoustic alarm and and mains failure signalization

• The compact control unit stands out due to its price performance ratio
• Reliable technology proven in thousands of decentralized SBR sewage treatment plants
• Even people without programming experience can easily create a program by editing an Excel^® table
• Individually equipped (display, keypad, connectors) according to customer requirements
• Integrated operating hours counter
• Automatic release of residual pressure in the valve unit
• Updateable firmware and software
• Design of the front-panel according to customer preference

The extent of the system functionality and the design of the front panel of the Sequetrol^® compact control unit can be tailored to match your individual needs.
The Sequetrol^® compact control unit is also available with features, such as, acoustic signaling of predefined conditions, a sequence program permanently stored in the EEPROM, and a set of batteries (optional NiMH rechargeable batteries) to ensure continuous signaling during power outage.
When the control sequence is interrupted due to mains failure, the unit will automatically resume operation with the last unfinished step instead of restarting the program.
Utilizing the three buttons on the circuit board, the sequence timing can be readjusted at the installation site, resulting in an increased flexibility in adapting the Sequetrol^® compact to the individual requirements of the particular plant.
Build-up of residual pressure in the valve unit is prevented by stopping the compressor before closing the valves. Timing is individually adjustable for each program step (0 - 14s).

Available digital input can be used to connect a float-switch or another sensor. Up to 5 relay outputs for 230VAC offer a comfortable connection of solenoid valves, diaphragm compressors or other loads.

The programming process was developed especially with regard to the demands of a real SBR wastewater treatment plant. The control unit will be delivered ex-factory already preprogrammed according to customer requirements. Firmware updates and sequence program changes can be performed with the aid of an inexpensive programming device. This also makes the Sequetrol^® compact “future-proof” and ready for possible changes of the legal situation.
No programming experience or any special software is needed.
The sequence program can be easily created or modified using a ready-made spreadsheet table (Excel^®).

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