Mettler Toledo M400 Especificaciones descargar pdf (Pagina 44)

Transmitter Multiparameter M400 44

Printed in Switzerland 52 121 378

8.4 Setpoints

(PATH: Menu / Conﬁgure / Setpoints)

Enter conﬁguration mode as described in Section 8.1.

Press the [ENTER] key to select this Menu.

Up to 6 Setpoints can be conﬁgured on any of the measurements (a thru d). The possible

Setpoint types are Off, High, Low, Outside and Between.

An ”Outside” Setpoint will cause an alarm condition whenever the measurement goes above its

high limit or below its low limit. A ”Between” Setpoint will cause an alarm condition to occur

whenever the measurement is between its high and low limits.

Enter the desired value(s) for the Setpoint and press [ENTER]

This screen provides the option to conﬁgure a setpoint to be active on an over range condition.

Select the setpoint and ”Yes” or ”No”. Select the desired relay that will activate when the setpoint

alarm condition is reached.

Over Range

Once conﬁgured, the selected relay will be activated if a sensor over-range condition is detected

on the assigned input channel.

Delay

Enter the delay time in seconds. A time delay requires the setpoint to be exceeded continuously

for the speciﬁed length of time before activating the relay. If the condition disappears before the

delay period is over, the relay will not be activated.

Hysteresis

Enter the hysteresis as a percentage-value. A hysteresis value requires the measurement to

return within the setpoint value by a speciﬁed percentage before the relay is deactivated.

For a high setpoint, the measurement must decrease more than the indicated percentage

below the setpoint value before the relay is deactivated. With a low setpoint, the measurement

must rise at least this percentage above the setpoint value before the relay is deactivated. For

example, with a high setpoint of 100, when this value is exceeded, the measurement must fall

below 90 before the relay is deactivated.

Hold

Enter the Relay Hold Status of ”Last”, ”On” or ”Off”. This is the state the Relay will go to during a

Hold status.

State

Relay contacts are in normal state until the associated setpoint is exceeded, then the relay is

activated and the contact states change.

Select ”Inverted” to reverse the normal operating state of the relay (i.e. Normally open contacts

are in a closed state, and normally closed contacts are in an open state, until the setpoint is

exceeded). ”Inverted” relay operation is functional when power is applied to the M400

transmitter. Relay No 2 always operates inverted. All other relays can be conﬁgured.

Pressing the [ENTER] key again will bring up the Save Changes dialog. Selecting No will

discard the entered values and return to the measurement display screen, selecting Yes will

save changes made.

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Mettler Toledo M400 Especificaciones Pagina 44

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