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Manual pCoOEM Bicircuit - Rhoss

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3 ON – OFF AND UNIT STATE<br />

3.1 On - Off<br />

3.1.1 Used inlets<br />

• Remote On/Off contact<br />

3.1.2 Used parameters<br />

• On/Off qualification from a remote supervisor<br />

• On/Off control from keyboard<br />

• Logic configuration of the 8 digital inlet working<br />

3.1.3 Working description<br />

The switch-on or switch-off of the unit is possible in three distinct ways, differentiated each other<br />

from a different priority grade:<br />

1. Keyboard<br />

2. Digital inlet<br />

3. Supervisor<br />

The keyboard has the main priority, only if switched on from keyboard; the unit can be afterwards<br />

switched-off/switched-on from a digital inlet or supervisor.<br />

The switch-on or switch-off of the keyboard unit will occur by pressing down the key [On/Off] for 2<br />

seconds in case of use of the PGD user interface terminal.<br />

Switch-on or switch-off from digital inlet has lower priority than the keyboard control, but higher<br />

than the supervisor.<br />

Switch-on or switch-off from supervisor is an actionable function.<br />

Each of the three interventions produces a specific message in the main menu mask that identifies<br />

the exact situation of the unit working.<br />

For what concern the working modality of the digital inlet will depend from the manufacturer<br />

parameter set-up of the working logic set-up of the digital specific inlet<br />

For what concern the supervisor, the expected working logic means:<br />

High logic state (1) unit on<br />

Low logic state (0) unit off<br />

3.2 Unit condition<br />

It’s provided the visualisation of the exact working state of the unit by an appropriate inscription<br />

reproduced in the main menu mask:<br />

On”<br />

“Off by alarm”<br />

“Off by supervisor”<br />

“Off by Digital inlet ”<br />

“Off by Keyboard ”<br />

The stand by status is the situation when ,with the unit in ‘’on’’,all the devices are off after the reach<br />

of the set point.<br />

If you’re using the PST user interface the unit in is signalled by the display of the regulation set<br />

point.<br />

The status of unit off ,but correctly supplied, is signalled by the led og the decimal point on,with all<br />

the display digit off;the alarm status will be signalled by the alarm red led lighting.<br />

<strong>Rhoss</strong> S.p.A. S.A.T.<br />

Rev. 1.0 20/01/05 10

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