![Shuangri Electron SR258 Operation Manual Download Page 23](http://html.mh-extra.com/html/shuangri-electron/sr258/sr258_operation-manual_1260877023.webp)
Manual of SR258 intelligent controller
22
exceeded, sign is displayed on the screen.
The sensor for tank maximum limitation (SMAX) can be selected. The maximum limitation
always refers to the sensor selected (T2 or T3). The switch-on hysteresis (HYST) is
selectable(Default is 2
o
C), for example, when tank maximum temperature is set to 70
o
C
,
then
at 68
o
C, Maximum tank temperature protection function is deactivated automatically.
Menu Structure
Main
menu
Submenu Factory
set
Adjustable
range
Step
per
adjust
Description
LOAD
Tank heating
DTO
6K
1-50K
0.5K
Switch-on temperature difference of
tank heating
DTF
4K
0.5-49.5K
0.5K
Switch-off temperature difference of
tank heating
DTS
10K
1.5-50K
0.5K
Temperature difference of pump
speed control
RIS
2K
1-20K
1K
Rise range of pump speed control
SMX
70
℃
4-95
℃
1
℃
Maximum temperature of tank
SMAX
S3
S2. S3
Sensor for Maximum temperature of
tank ( S3 for T3, S2 for T2)
HYST
2K
0.1-10K
0.1K
Hysteresis of maximum temperature
of tank