Moxa IOLOGIK E2212 Instrukcja Użytkownika Pobierz pdf (Strona 89)

Click&Go User’s Manual Examples and Applications

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Applications_4

The ioLogik E2242 handles control and alarms for a sump pump system.

Project Background

Many industries use a sump pit to collect wastewater

from machines, cutting oil, and toxic solutions from the

production line. When the level of the liquid in the sump

pit reaches a certain level, the liquid in the sump pit must

be pumped out to a holding tank. If the system is set up

as an open-loop system, engineers must periodically

check the level of the sump pit. They must manually turn

the pump on when the sump pit is nearly full, and then

turn the pump off when the sump pit is nearly empty.

Application Requirements

A better method of sump pump control is to use a closed-loop central monitoring system such as a

SCADA system. In this case, a sensor is connected to a controller to turn the pump on and off

automatically. The sensor and control mechanism should be able to detect the liquid level and start

or stop the pumping action when the float switch senses that the liquid level is too high or too low.

Multiple pump control and alarm generation must also be included as part of the control system.

Alarm indicators should be triggered when the pump starts or when the water reaches a high level.

Moreover, the sump pump must be controlled either automatically or manually from a remote

location.

Moxa Solution

The ioLogik E2242 is an Active Ethernet I/O server designed for mixed I/O applications. The 4

analog inputs are able to connect to liquid level sensors based on either voltage or electric current,

and the 12 built-in configurable DIOs provide the best flexibility for connecting to multiple input

switches or triggering pumps and alarms. With the user-friendly Click&Go local control logic,

users can easily program the ioLogik E2242 to act as a front-end pump controller and alarm

generator to control automatically the action of the pumps, generate alarms, and send the most

up-to-date status to the central SCADA system, or by e-mail to the field engineers.

Solution Benefits

Moxa’s ioLogik E2242 provided the sump pump control system with the following benefits:

9 Click&Go’s easy IF-THEN-ELSE style control logic, which eliminates the need for a PLC

or RTU

9 Active reports via TCP/UDP/SNMP trap, and e-mail

9 Relay count reports

9 Compact size and cost-effectiveness

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