Rievtech ELC Series - Page 140

EN
Programmable Relay ● User Manual for ELC, EXM and PR Series 140 2020 v6.0 ● © Rievtech Co.,
Ltd. ● www.rievtech.com
PV = (analog value on
input * gain) + offset.
You can connect the input
for example by means of an
analogue input with a
PT100 sensor.
The gain parameter
influences PV
0.0 to
10.0
The offset parameter
influences PV
-10,000
to
+20,000
PV is restricted by the
parameters Min. and Max.
In each
case: -
10,000 to
+20,000
The Dir parameter gives the
action direction of the
controller.
Positive means: If the set
value > process value then
the process value is
increased; if the set value <
process value then the
process value is reduced.
Negative means: If the set
value > process value then
the process value is
reduced; if the set value <
process value then the
process value is increased.
e.g. heat regulation: if the
set value is greater than the
process value (room is too
cold), the manipulated
variable increases the
process value.
- or +
Analogue Ramp
Description of function
The Analogue Ramp instruction allows the output to be
changed from the current level to a selected level at a
specified rate.
Connection
Description
Input En ( )
A change in the status from 0 to 1
at input EN (Enable) applies the
start/stop level (Offset "B" + StSp) to
the output for 100 ms and starts the
ramp operation to the selected level.
A change in the status from 1 to 0
immediately sets the current level to
Offset "B", which makes output AQ
equal to 0.
Input Sel
SeI = 0: The step 1 (level 1) is
selected.
SeI = 1: The step 2 (level 2) is
selected.
A change in the status of Sel
causes the current level to start
changing to the selected level at
the specified rate.
Input St
A change in the status from 0 to 1
at input St (Decelerated Stop)
causes the current level to decrease
at a constant rate until the
start/stop level (Offset "B" + StSp)
is reached. The start/stop level is
maintained for 100 ms and then
the current level is set to Offset "B",
which makes output AQ equal to 0.
Parameter
Level1 and Level2: Levels to be
reached; value range for each level:
-10,000 to +20,000
MaxL: a Maximum value that must
not be exceeded.
Value range: -10,000 to +20,000
StSp: Start/Stop offset value that is
added to Offset "B" to create the
start/stop level. If the Start/Stop
offset is 0, then the start/stop level
is Offset "B").
Value range: 0 to +20,000