Control Of The Relay Outputs - Level Pro ITC 450 User Manual

ITC 450/470
User manual

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.
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.
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.
state of
relay/LED
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.
state of
relay/LED
zone B
Figure 6.5. One threshold control of the relay/LED outputs
"SEtP" or "SEt2" parameter
zone B
"HYSt" parameter
Figure 6.6. Two threshold control of the relay/LED outputs
"SEtP" parameter
zone A
measure
"HYSt" parameter
zone A zone B
measure
www. levelprosales.com
20