Input basic programming data
37
Two-point operating mode
(Output LV2 relay as a two-point controller)
If the LV2 upper limit value is exceeded, the LV2 output relay is acti-
vated. If the lower limit value LV1 is not attained, the LV2 relay is
switched off. Different values must accordingly be set for the limit
values LV1 and LV2. For example, for LV1 = 0.1 °dH and LV2 = 0.2
°dH.
The Output LV1 relay works independently as a limit value relay and
is activated once the LV1 limit value is exceeded.
For each relay, the switching function included via
=> Basic program => Relay LV1 or Relay LV2
can be separately configured:
Operating mode range
The relays switch when the predefined range between LV1 to LV2 is
exited:
If GW1 is not attained, relay 1 switches
If GW2 is exceeded, relay 2 switches
Switching functions of the LV1 and LV2 limit val-
ue outputs
Input the switching function separately for each relay via
=> Basic program => Relay LV1 or Relay LV2
Select Hysteresis, Duration, Impulse, Interval and Time.
(An " * " appears at the end of the line)
Input the time (only with impulse and interval switching function)
(Values from 00:00 up to 99 min. and 99 sec. can be entered)
Confirm the input with "OK"
Switching function only after multiple exceeding of limit value
The respective limit value output can be set to be triggered after the
first, second or third exceeding of the limit value.
This improves the assessment of the analysis e.g. after possibly in-
sufficient purging of the sampling line.
The value may be separately configured for both the LV1 relay and
LV2.
The basic setting is 1 for LV1 and LV2. Switching occurs immediately
after the limit value is exceeded, with no delay.
When the number of times the limit value has been exceeded is “2”,
the next analysis is performed immediately after the first exceeding of
the limit value. Only after the limit value has been exceeded twice is
the corresponding output switched.
When the limit value has been exceeded “3” times, the corresponding
output only switches after the limit value has been exceeded three
times consecutively. This setting is only reactivated once the reading
falls under the limit value!
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