Promag CON-485 Series Instruções de Operação descarregar pdf (Página 34)

5 Operation / adjusting device settings - Set-up to commissioning Memo-Graph S

34 Endress+Hauser

In the analogue inputs / signal menu the “from data interface” option appears, i.e. the input signal

is sent via Profibus to the SDM.

Signal settings -> Analogue inputs -> Analogue input x: Limit value x sub-menu:

Settings only required if limit values are to be monitored for this channel.

If a limit value type has been selected, it is marked as activated by “Limit value created”.

Set-up -> Signal settings -> Analogue inputs -> Analogue input x -> Limit value x

Type Select the type of limit value.

Analogue signals:

“Upper limit”: signal exceeding limit value.

“Lower limit”: signal undershooting limit value.

“Gradient”: signal changing too quickly.

for quantities (calculated from the analogue signal using integration): the limit value of the meter reading is exceeded

within the specified period of time.

! Note!

In order to be able to monitor meter readings for limit value violation, the corresponding signal analyses must be activa-

ted (see Chapter 5.7.3 “Signal analysis”).

Limit value, upper/lower: analogue limit value in the set process unit, e.g. in °C, bar, ... .

Limit value, integrated: quantity limit value (integrated analogue channel) in the process unit set under “Integration”

(“Unit integrated”).

Gradient dy/dt: limit value when the signal changes too quickly (within a period of time dt, the signal changes by the

value dy).

Signal change dy: value by which the signal has to change in the specified time span in order to be recognised as a limit

value.

Time span dt: time span within which the signal has to change by the specified value in order to be recognised as a limit

value.

Limit value, analogue Analogue limit value in the set process unit, e.g. bar, °C

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Promag CON-485 Series Instruções de Operação Página 34