Electric pump switchgear
en
Installation and operating instructions Wilo-SiFire FIRST
39
Jockey pump operation statistics
9.1.7
Communication channel
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The standard RS485 port mounted on the switchgear is mapped as COM1.
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The communication channels are completely independent, both from the hardware
point of view (physical interface type) and from the communication protocol point
of view.
9.1.8
Inputs, outputs, internal variables,
counters, analogue inputs
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The inputs and outputs are identified by an abbreviation and a progressive number.
For example, digital inputs are called INPx, where x represents the input number. In
the same way, digital outputs are called OUTx.
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The numbering of the inputs/outputs is simply based on the mounting position of
the expansion modules, with progressive numbering from top to bottom.
9.1.9
Limit thresholds (LIMx)
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The LIMx limit thresholds are internal variables whose status depends on a measure-
ment performed by the system (for example: line voltage above 420 VAC).
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To speed up the setting of the thresholds, which can range extremely wide, each of
them must be set with a base value + a multiplicative coefficient (example: 2 x 1k =
2000).
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Two thresholds (upper and lower) are available for each interactive whiteboard. The
upper threshold must always be set to a higher value than the lower one.
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The meaning of the thresholds depends on the following functions:
Min. function:
With the Min. function, the lower threshold is switched on and the upper reset
threshold is reset. When the selected measured value is below the lower limit, the
threshold is triggered after the set delay. When the measured value is higher than the
upper limit, the reset is triggered after the set delay.
Max. function:
With the Max. function, the upper limit is tripped and the lower limit is reset. When the
selected measured value is higher than the upper threshold, after the set delay the
threshold is activated. When the measured value is lower than the lower threshold, the
reset is triggered after the set delay.
Min. + Max. function:
With the Min. + Max. function, the lower and upper threshold values are triggered sim-
ultaneously if the selected measurement value is lower than the lower threshold or
higher than the upper threshold. The threshold is tripped after the respective delay.
When the measurement value is within the limits, it is immediately reset.
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Triggering of the LIMx thresholds may open or close the relay depending on the set-
ting.
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If the LIMx threshold is set with memory, the alarm must be reset manually. The re-
set can be performed via the relevant command in the command menu.
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The following figure describes the relevant setting menu.
Fig. 11.6
Description
1
Type of measure
2
Function
3
Measurement value
4
Variable state limit
5
Lower threshold
6
Upper threshold
9.1.10
Remote variables (REMx)
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A maximum of 16 remotely controlled variables can be managed (REM1 ... REM16).
