IM05805001K
7
Effective November 2003
4.2.9 Low Pressure
(*Not available on Foam Pump Controllers)
The ‘Start Pressure’, ‘Stop Pressure’ and ‘Low Pressure
Alarm’ programmed values affect this LED. This LED
can be used as a pre-warning to a pump motor start.
The LED will flash as set by the “LOW PRESSURE
ALARM” level”. The LED latches on and illuminates
continuously when the system pressure is equal to or less
than the “START PRESSURE” value. The LED turns off
when the motor stops either manually or automatically.
4.2.10 Phase Reversal
Due to the voltage monitoring of the system, the
LMR
will
detect and alarm on a Phase Reversal condition. The LED
will illuminate and its respective relay, 5CR will energize,
and the Common Alarm relay, 3CR, will de-energize.
4.2.11 Phase Failure
Due to the voltage monitoring of the system, the
LMR
will
detect and alarm on a Phase Failure condition. The LED
will illuminate and its respective relay, 2CR, and Common
Alarm relay, 3CR, will de-energize.
4.2.12 Undervoltage / Overvoltage
Due to the voltage monitoring of the system, the
LMR
will
detect and alarm an Undervoltage or Overvoltage condition,
as programmed by the user. Their respective LED’s will
illuminate and the Common Alarm relay, 3CR, will de-
energize. The parameters are as follows:
Undervoltage:
5 – 30 %
Overvoltage:
5 – 20 %
Refer to Section 6 for programming the controller.
4.2.13 Fail To Start
If, after receiving a start signal, the
LMR
does not detect a
current greater than 20% of FLA (after an adjustable, user-
programmable time delay of 1-90 seconds) the Fail-to-Start
LED will illuminate and the Common Alarm relay, 3CR,
will de-energize. Refer to Section 6 for programming
information.
4.2.14 Low Suction Pressure
(For Foam Pump controllers refer to section 15.5 –
Low Foam Level)
A contact from an additional or external pressure switch is
connected between terminals 45-49. Its respective LED
will illuminate and the Common Alarm relay, 3CR, will de-
energize upon a contact closure. For Low Suction Shutdown,
refer to Section 6.2.
4.2.15 Relief Valve Discharge
The signal is provided by others and connected between
terminals 38-49. Its respective LED will illuminate upon
a contact closure.
4.2.16 Locked Rotor Trip
The controller card detects this situation and opens the
Circuit Interrupter (CB) via a shunt trip.
Once the controller trips after a locked rotor condition, upon
resetting the main switch the ‘LOCKED ROTOR TRIP’
LED will be illuminated and the LCD display will indicate
‘Locked Rotor Trip / Press Reset’. Pressing the RESET key
on the membrane faceplate will initialize the system and the
controller will be ready for use.
4.2.17 Emergency Start
Upon actuation of the Emergency Start handle, the
MSH microswitch generates an input to the controller
card, terminals 40-49, and the EMERGENCY START
LED illuminates.
4.3 LCD Display
The LCD display located on the main panel allows the
user to view; system pressure; 3-phase voltage and current;
weekly timer; start and stop pressure settings; elapsed
running time of the motor in hours; the number of start
requests; 2048 status/alarm messages.
All STATUS and ALARM conditions are stored in memory.
In addition to being printed, the most recent 2048 conditions
can be viewed on the LCD display via use of the external
black pushbuttons located on the enclosure flange.
The LCD display is also used when programming the
LMR
Controller.
The STEP pushbutton, located on the enclosure flange, is
used to step through the ‘Controller Readings’ as seen on
the LCD display. Pressing this button at any time will cause
the display to change and view the next reading. The
LMR
is fully operational while viewing the readings. With the
enclosure door open, the UP ARROW and DOWN ARROW
keys perform the same function.
Caution must be taken with
the door open and power on. Only trained personnel should
be allowed inside the controller.
The displayed readings are as follows:
Pressure
All Voltages and Currents
V: _480 _480 _480
A: 125 125 125
Voltage Phase A-B
Voltage Phase B-C
Voltage Phase C-A
Current Phase A
Current Phase B
Current Phase C
Start Pressure Point
Stop Pressure Point
Weekly Test Time
Elapsed Time Meter
Number of Operations
Display Last Messages *
Summary of Contents for Cutler-Hammer LMR
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Page 21: ...IM05805001K 15 Effective November 2003 10 FIGURE 3 TYPICAL SCHEMATIC ...
Page 23: ...IM05805001K 17 Effective November 2003 13 FIGURE 5 LMR PROGRAMMING MENU ...
Page 27: ...IM05805001K 21 Effective November 2003 18 FIGURE 7 FDF SCHEMATIC ...
Page 30: ...24 IM05805001K Effective November 2003 22 FIGURE 10 FDM MEDIUM VOLTAGE DIMENSIONS ...
Page 31: ...IM05805001K 25 Effective November 2003 23 FIGURE 11 FDM SCHEMATIC ...