JUMO LOGOSCREEN 500, Operating Instructions Manual

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15
2 Instrument description
Counters
Counter inputs - logic inputs
- logic channels
- alarms
- errors
- Modbus-Flag (signal via serial interface)
Counter
frequency 30Hz max.
Weighting The count pulses can be evaluated (weighted). A down counter can be imple-
mented by entering a negative weighting (e.g. weighting factor -1).
Each count change can be documented with an entry in the event list. The
new count is attached to the message.
Integrators
Integrator
inputs - analog inputs 1— 3 (6)
Integrator
time base - sec, min, hr and day
Weighting You can also enter a weighting for the integrators.
Weighting
example - flow measurement
- input signal from 0 — 20mA (corresponds to 0 — 1000 l/sec)
- time base 1sec
- weighting 0.001
- display of the integration value (quantity) in m³
Minimum size
of input signal Entering a threshold value (amount of threshold value) has the effect that inte-
gration takes place only when the value has been exceeded. No integration
will occur on falling below the value. The advantage of integration with a
threshold value larger than 0 is that possible noise from a transducer can be
suppressed in this way.
Timers
The timer will count for as long as the selected logic input or one of the digital
signals is closed (set). The time can be displayed in sec, min, hr and days.