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Chapter 3: Configuration
Pulse
The output Pulse generates pulses. If the value of Signal is great, the pulses come
often, and if the value of Signal is small, the pulses come seldomly. If the value
of Signal is less than or equal to zero, no pulses are generated. An internal pulse
pulse
counter (IPC) keeps track of how many pulses have been generated.
pulse
Pulse
Pulse
Overflow and OverflowLimit
By setting the parameter OverflowLimit, the user can determine how many pulses
are generated before the Overflow pulse is generated. (The parameter
OverflowLimit determines the height of the tank.) The relationship between IPC
and OverflowLimit is:
When IPC = OverflowLimit, the Overflow pulse is generated.
Pulse Width
The pulse width (of both Pulse and Overflow) is always equal to the parameter
SampleTime.
Time and TimeUnit
The parameter Time defines the period of time between two consecutive pulses at
a Signal of 1.00. The parameter TimeUnit determines the unit of Time: seconds or
minutes. (The parameter Time corresponds to the radius of the tank. The greater
the radius, the slower the water level will rise.)
The permissible range of Time is as follows:
Time
...while the setting of SampleTime affects Time
Value
Value represents the accumulated value of Signal over time. Value will increase
from 0.00 to 1.00 at a Signal of 1.00 in Time
the level in the tank measured in percent of full tank).
Example:
If TimeUnit = seconds, Time = 6.00 and OverflowLimit = 10, then it will take
60.00 (6.00
493-0736-11 (6-2)
always has the same value
max
Time
= 86 400 seconds = 1 440 minutes = 24 hours = 1 day
max
×
Timemin = 3
SampleTime seconds =
×
10) seconds for Value to increase from 0.00 to 1.00 at Signal of 1.00.
0 ≤ IPC ≤ OverflowLimit
≤ Time ≤ Time
Time
min
min
3
----- -
60
×
OverflowLimit TimeUnit (Value is
3.6 Setting the Configuration
max
×
SampleTime minutes
107
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