Application Example; Point Level Detection With High And High-High Alarm - Siemens Pointek CLS500 Operating Instructions Manual

Application Example

Pointek CLS500 can be applied to a multitude of tasks: a generic example is shown below.

Point level detection with High and High-High alarm

• The signal current provides the High alarm: it should be 4 mA below the analog
switch point and toggle to 20 mA above it.
• The High alarm should be activated at or above 85% of range and deactivated at or
below 80%.
• The solid-state switch provides a High-High alarm which should be activated at or
above an alarm switch-point of 90% and deactivated at or below 86%.
solid-state output
(analog) 2-state
output
Device settings:
Note: All values are for demonstration purposes only.
1. Reset factory settings if necessary at menu 12.
2. Select TV0 (Transmitter Variable 0 is PV) at menu 01: menu 01 reads Pv = 0
3. Set the High alarm:
a. Select analog signalling mode (2-state) at menu 07.
Press and hold the RED button for about a second: the display should read C:Hi.
This indicates that the signal-current will switch to 20 mA when the actual range
is at or above the Upper Threshold setting (menu 05) and switch back to 4 mA
when the actual range is at or below the Lower Threshold setting (menu 06).
b. Set the High alarm activation: set the reading at Menu 05 to 85.
c. Set the High alarm deactivation: set the reading at Menu 06 to 80.
Page 96
Indicator
0-100%
current
loop
connection
Upper Range Value (URV)
Upper Threshold Setting
Lower Threshold Setting
Upper Threshold Setting
Lower Threshold Setting
Lower Range Value (LRV)
Pointek CLS500 – INSTRUCTION MANUAL
solid-state
output
circuit
P
100%
90%
86%
85%
80%
0%
7ML19985GG03
auxiliary
power
pump
power