Unit Function; Menu Group Relays - Endress+Hauser RIA 450 Manual De Instrucciones

Process display

6. Unit function

6.1 Relay menu group
The following is a description of the settings for the four alarm
relays. Each individual relay must be set up in the four menu
groups
It is important that the relays are deactivated when the alarm
set point is active. The four menu groups
available in units with the RELAY option.
Relay switched off
The selected relays together with the set point arrows are
switched off. This means the relays are no longer functional.
Alarm function on set point infringement
(Minimum safety) and
Here the safety function of the relay is set up i.e. if the relay is
to deactivate on undercutting or exceeding the preset
measured set point value.
Example: In Menu group LIM1 the parameter
MODE, the set point
10
. In this case relay 1 will deactivate at 50%. With a 40%
signal the relay will switch on again.
50
LIM1 LIM4
to .
OFF
Measured value
MIN
SP
¬ Relay de-energised
SP
is set to
LIM1
MAX MAX-
/ (Maximum safety):
Measured value
.
HYST
50
, the hysteresis HYST is set to
LIM4
to are only
MIN MIN-
/
MAX
SP
HYST
MAX
is set up in
.