10
IM05805001K
Effective November 2003
6.2.6 Acceleration Timer
This timer is used in conjunction with all Reduced Voltage
Starting controllers. The programmed value determines the
amount of time the ‘start’ contactor remains in the circuit
during initial starting of the motor. The default, and
recommended, setting is 2 seconds.
The timing range is:
0-15 seconds
6.2.7 Pressure Transducer
(For Foam Pump controllers refer to section 15.3 –
ressure Transducer)
When selected as YES, the controller will start based on the
signal from the pressure transducer.
When selected as NO, the pump will start when the control-
ler detects a contact closure between terminals 39-49, i.e.
pressure switch start.
For both starting conditions above, the Sequential Start
Timer is activated when selected.
6.2.8 Fail-To-Start
For software versions V2.7 or greater, select the time delay,
1-90 seconds, to initiate a Fail-To-Start alarm. Typically set
at 5-10 seconds.
6.2.9 Pressure
Start
Point
The value programmed determines at what pressure the
controller will initiate a start command to the motor.
The pressure range is:
0-600 PSI
(If the pressure transducer is disabled in the controller
firmware, this function is disabled for either a standard
LMR or Foam Pump Controller.)
6.2.10 Pressure
Stop
Point
The value programmed determines what pressure the system
must reach before the controller will STOP the motor, via the
RPT timer. If the actual pressure does not exceed the STOP
pressure value, the motor will continue to run.
The pressure range is:
0-600 PSI
(If the pressure transducer is disabled in the controller
firmware, this function is disabled for either a standard
LMR or Foam Pump Controller.)
6.2.11 Low Pressure Alarm
This function serves as a pre-alarm for low pressure. At the
programmed value, the ‘LOW PRESSURE’ LED on the
membrane faceplate will flash until the motor starts, at
which time the LED will remain on continuously.
If the motor does not start, the LED will flash only and turn
off once it surpasses the programmed
‘Low Pressure’ value.
(If the pressure transducer is disabled in the controller
firmware, this function is disabled for either a standard
LMR or Foam Pump Controller.)
6.2.12 Low Suction Shutdown
This function monitors a contact closure between terminals
45-49. If shutdown is disabled, its respective LED will
illuminate, the Common Alarm Relay, 3CR, will de-
energize, and the pump will continue to run.
If shutdown is enabled, to prevent the controller from
respond-ing to a momentary pressure loss (which would
otherwise shut down the fire pump unnecessarily), a time
delay must be programmed to ensure a steady state. The
shutdown time delay is selectable between 0-30 seconds.
Upon detecting a steady state contact closure, the pump
will turn off. The reset mode of the pump is user selectable.
For AUTOMATIC reset, a time delay between 0- 30 seconds
is selected, after which the controller observes the input for
an open contact. If the contact remains closed, the controller
will not allow the pump to restart. If false, the controller
will function as normal and respond to a start signal.
If MANUAL reset is selected, the ACK ALARM pushbutton
must be depressed to reset the controller. If the situation
continues to exist, the controller will not restart the pump
and the alarm will reappear.
After a power loss, if programmed for shutdown and the
input is true, the controller will not start and will follow
the reset method as selected.
The LCD display will indicate ‘Low Suction Shutdown’
in both situations.
Note: Selection of the Low Suction Shutdown function
will not shutdown or prevent the controller from starting
on remote or local start.
NFPA 20, Section 2-9.9, specifically prohibits the install-
lation of any device in the suction piping that will restrict
starting or stopping of the fire pump. EATON Cutler-
Hammer assumes no liability when this function is used.
6.2.13 Program Future #1 Relay, 6CR
(For Foam Pump controllers refer to section 15.6 –
Low Foam Interlock)
This parameter allows the user to choose the method for
energizing the Future #1 Relay.
If (Input = Output) is selected, the relay will energize when
a dry contact input is detected between terminals 46 &49.
It will remain energized until the Reset key is pressed on
the membrane faceplate.
If (Low Pressure) is selected, the relay will energize at the
programmed ‘Low Pressure’ value. This function and relay
can also be used to indicate a ‘Low-Low Pressure’ situation,
if programmed lower than the start pressure value.
The Future #1 relay can be user programmed for any one of
the following conditions:
Input= Output, Load Shed, Pump Run, Motor Overload,
Overvoltage, Undervoltage, Low Suction, Interlock On,
Fail-To-Start or Low Pressure.
6.2.14 Pressure Deviation
This value determines how often to print system pressure
fluctuations as programmed by the user. In effect, it performs
as a chart recorder.
Summary of Contents for Cutler-Hammer LMR
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