IM-P693-02
EMM Issue 2
17
LCR2251 Level Controller
5.8 Displays
Operation (Continuous PI Controller)
Action
Display
Function
Control valve has changed
Pump LED flashes amber
4 - 20 mA manipulated variable Y has
changed.
Control valve fully open or closed
Pump LED lights up amber
4 - 20 mA manipulated variable Y has
reached 4 mA or 20 mA.
Operation (Pump on/off Controller)
Action
Display
Function
Water level reached or exceeded the
pump on switchpoint.
Pump LED lights up amber
Pump output contacts 19/20 closed.
Water level reached or exceeded the
pump off switchpoint.
Pump LED do not light up amber
Pump output contacts 19/20 open.
MIN alarm
Switchpoint for MIN water level
reached or exceeded.
MIN LED flashes red
De-energizing delay in progress.
MIN LED lights up red
Delay time elapsed, MIN output
contacts 16/18 closed, 17/18 open.
MAX alarm
Switchpoint for MAX water level
reached or exceeded.
MAX LED flashes red
De-energizing delay in progress.
MAX LED lights up red
Delay time elapsed, MAX output
contacts 21/23 closed, 22/23 open.
