Nivetec Echo Smart Series, Руководство по эксплуатации и установке, Страница: 65 / 73

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Figure 11.3 Orientation of Units with Wireless Radio Modules
11.3.
Relays
Relays require additional circuit board installation in the EchoSmart Controller. Relays
are not available in the EchoSmart Power Supply Unit.
11.3.1. General Overview
One to four relays may be added as an option to a Controller. Each relay is capable
of monitoring the sludge level or turbidity (with optional sensor) and can be
assigned to separate sensors, or multiple relays can be assigned to one sensor.
11.3.2. Operation (Figure 11.4)
Relay controls are accessed by pressing the Set Up Relays soft key from the
Controller Setup Display (Figure 4.12).
The relay Status must be set to ON in order for the relays to operate. The sensor
associated with each relay is listed below the “Status” setting. Each relay is capable
of monitoring the sludge level or the turbidity value (when installed) by selecting
the desired setting under the “Assign to” option. The “Enable >” parameter
determines the value at which the relay will be energized and change states while
the “Disable <” determines the value at which the relay will de-energize and change
states.