Level Pro ITC 450, User Manual

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If device is not equipped with one or more relay outputs, menus refer to this relays are available, but
apply to LED indicators only. In such case LEDs indicates exceeding of particular thresholds.
The relay outputs and LEDs (named R ) can be controlled depend on both - the current value and
the peak value (when peak detection is active) of the input signal.
6.3. CONTROL OF THE RELAY OUTPUTS
The control of the object (measured signal) is realized via relay outputs. Front panel LEDs named „R”
indicates the state of particular relay output.
Modes of the control can be changed depend on the values of parameters “SEtP”, “SEt2”, “HYSt”, “modE”,
“t on”, “toFF”, “unit” and “AL”. Depend on “modE” parameter, relays can be not used or controlled over
one or two thresholds values.
If one threshold is used (Figure 6.5) the relay can be turned on (“modE” = ”on”) or off (“modE” = ”oFF”)
when the input signal value is contained in zone A. If two thresholds are used (Figure 6.6) the relay will be
turned on when value of input signal is contained in zone A (“modE” = ”in”) or zone B (“modE” = ”out”)
and turned off if the signal is contained in the second one.
Figure 6.5. One threshold control of the relay/LED outputs
zone A zone B
measure
”SEtP” parameter
”HYSt” parameter
state of
relay/LED
Figure 6.6. Two threshold control of the relay/LED outputs
zone B zone A
zone B
measure
”SEtP” or ”SEt2” parameter
”HYSt” parameter
state of
relay/LED
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User manual