Endress+Hauser RTA421 Mode D'emploi page 39

* Time delay
Set up the time delay for
the set point condition
event once the switch
threshold has been
reached.
Connection between switch threshold and hysteresis on
(minimum safety) and
On minimum safety the set point condition remains active so
long as the measured signal lies below the switch threshold
value plus the hysteresis
than the switch threshold minus the hysteresis (
Meas. value
Relay deactive (powerless), yellew LED off
Operation of the red fault LED
If the input range 4...20 mA / 20...4 mA is selected and the
actual current signal is < 3.6 mA or > 21 mA, then the red LED
on the front of the unit will illuminate.
Value range:
0 to 99s
The time delay can be set in
steps of 1 sec.
(Maximum safety):
( + ( + 1 ) % )
Meas. value
( + 1 ) %
, on maximum safety larger
- (
+1)%).
(
Contactor
+ 1 ) %
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