SMC Networks HRS Series - Discharge Pressure Alarm (AL18;AL19;AL20)

DOC1001322
Chapter 5 Display and Setting of Various Functions
HRS Series 5.4 Description of the Screen
5-37
Table 5.4-7 Pump operation mode setting
 By default
・Discharge pressure alarm (AL18/AL19/AL20)
5. An alarm can be activated when the circulating fluid discharge pressure rises/drops outside
the setting range.This function is set to “ [ ] (stop) at the time of alarm” by default.
The following two alarms can be set on “Discharge pressure alarm setting” screen:
• AL19: Alarm for circulating fluid discharge pressure rise––this alarm activates when
the pressure rises above the set pressure.
• AL20: Alarm for circulating fluid discharge pressure drop––this alarm activates
when the pressure drops below the set pressure.
Following settings can also be selected:
• Selection of product operation when an alarm occurs
The alarm “AL18: failure of circulating fluid discharge pressure sensor” activates
when a failure is detected in the circulating fluid discharge pressure sensor. This allows
selecting the product operation when the alarm “AL18” is activated.
This function is set to “Operation stops at time of alarm” by default.
If the operation at the time of the alarm “AL18” is set to become [ ] (disabled) or
[ ] (operation continues at time of alarm), the pump operation mode switches to
the “Pump output setting modeˮ (50% output) to continue operation when a pressure
sensor failure is detected.
No. Indication Item
(1) Press. SP
Set the pressure in
the while in pressure
control mode
HRS400
0.10 to 0.68MPa
*0.45MPa
(2) Flow SP
Set flow rate in the
flow rate control
mode
HRS400
40.0 to 180.0LPM
*125.0LPM
(3) Output SP
Set the output in the
output setting mode
HRS400
50.0 to 100.0%
*50.0%
* Pressure control mode
Flow rate control mode
Set output mode
Selects enabling/disabling of the pressure control.
* Function disabled
Function enabled
ー
(5)
Press.Limit
Pressure setting for
pressure control
function
HRS400
0.10 to 0.68MPa
*0.50MPa
(4)
Control Mode
Selection of pump
operation mode
Selects the pump operation mode
ー
Explanation
Setting range
(4) The pump operation is controlled to maintain the
set pressure when “control mode” (operation mode)
is set to “ ”.
(4) The pump operation is controlled to maintain the
set flow rate when “control mode” (operation mode)
is set “ ”.
(4) The pump operation is controlled to maintain the
set output (rotation) when “control mode” (operation
mode) is set
to “ ”.