9 manual control, See section 6.4.9 – YSI DIQ/S 182 XT-4-PR User Manual

Page 114

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Relay outputs

System 182 XT-4

6 - 24

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02/2012

Canceling the cleaning

A running cleaning cycle is canceled:

 Automatically

– if the sensor switches to the inactive condition during the cleaning

cycle

 Manually

– By pressing

c

– By switching on the maintenance condition

Each time the cleaning cycle is canceled, the relay opens immediately.

If the cleaning cycle is canceled automatically, the outputs linked to the
sensor are released immediately.
If the cleaning cycle is canceled manually, the sensor is in the
maintenance condition. The linked outputs are only released after the
maintenance condition was terminated manually.

The next cleaning cycle will be performed at the time set up.

Note
In case of a power failure, all relays open. The cleaning cycle is
canceled. The outputs linked with the sensor change to the non-active
condition (see section 6.5.2). As soon as the power is available, the
outputs are released again. The next cleaning cycle will be performed
at the time set up.

6.4.9

Manual control

Function

The Manual control function can be used to test the operativeness of
an instrument that is connected to the relay. To do so, close or open the
relay manually and, while doing so, check the behavior of the
connected instrument.

Note
The settings for other functions in the Relay function menu as, for
example, Frequency output and Pulse-width output are retained while
the Manual control is carried out.

Setting

Selection/Values

Explanation

Relay function

Manual control

The selected relay action
is carried out with Save
and quit
.

Action

Open
Close

Relay action

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