4
IM05805001K
Effective November 2003
continue to run, or the contactor does not latch electrically,
push and turn the handle counter-clockwise to latch it in
place. To turn off the pump, first turn off the CB and then
unlatch the handle.
If a reduced voltage controller is operated by means of the
handle, the controller operates as full voltage, across-the-line
starter only; the reduced voltage starting function is disabled.
If the emergency starting handle must be used as the only
means to start the fire pump, check for possible Interlock or
Low Suction conditions. If neither condition is present, there
could be a malfunction within the controller. The controller
should be checked and repaired by a qualified electrician
without delay, in order to regain full fire protection.
3.10 Incoming Connections – TB1
The LMR controller card is pre-wired to terminal block TB1,
where all external connections are made. There is no need to
make any connections directly to the controller card.
Refer to
Figure 1, page 14 for the terminal block, TB1, connections.
For Foam Pump controllers, refer to Field Connections,
page 22.
The complete schematic showing incoming breakers and
contactor(s), will be shipped with each Fire Pump Controller
and will vary depending upon the application.
Refer to
Figure 3, page 15 for a typical schematic. For Foam Pump
controllers, refer to page 21.
Listed below are the input connections to TB1, on the
LMR
,
for customer use.
NOTE:
For all terminal block references, terminal 49 is
common to all
dry
contact inputs.
*DO NOT APPLY A VOLTAGE ON
TERMINALS 35 TO 49*
3.10.1 Remote
Start
The Remote Start connection, terminals 35 & 49, is wired to
TB1. It is a N.O. input (dry contact) and will start the motor
upon a contact closure. Its respective LED, on the membrane
faceplate, will illuminate to indicate the starting cause.
3.10.2 Deluge
Operation
(For Foam Pump controllers refer to section 15.7 – Deluge
Valve & Pump Start Inputs)
When the fire pump supplies special water control equipment
it may be desirable to start the motor before the pressure
tranducer would do so. The Deluge Valve connection, term-
inals 36 & 49 is wired to TB1. The motor will start upon a
contact closure and its respective LED will illuminate.
3.10.3 Interlock
ON
(For Foam Pump controllers refer to section 15.10 –
Interlock On)
The Interlock On connection, terminals 37 & 49 is wired to
TB1. When a signal is received, its respective LED will flash
and the Fire Pump Controller will NOT start. If the pump is
running, it will stop when a contact closure is detected
between terminals 37-49.
Interlock ON can be utilized when two or more controllers
are daisy-chained in a system.
NOTE:
Use of this interlock function is subject to approval
by the authority having jurisdiction and/or the insurance
under-writer for the building.
3.10.4 Relief Valve Discharge
The signal is provided by others and connected between
terminals 38-49. Its respective LED will illuminate upon
a contact closure and the common alarm relay, 3CR, will
de-energize.
3.10.5 Pump
Start
(For Foam Pump controllers refer to section 15.7 – Deluge
Valve & Pump Start)
This input is used for systems that utilize a contact closure
to start the pump, such as in foam applications, or contacts
from an external pressure switch or fire alarm system. Upon
detecting a contact closure between terminals 39-49, the
pump will start.
3.10.6 Low
Suction
Pressure
(For Foam Pump controllers refer to section 15.5 – Low
Foam Level)
An external or additional pressure switch provides the signal
connected between terminals 45-49. Upon a contact closure,
its respective LED is illuminated and the common alarm
relay, 3CR, will de-energize.
If programmed for Low Suction Shutdown, the pump will
turn off upon detection of a contact closure between
terminals 45-49 (refer to section 6.2).
Note: If the controller is started manually, it will not turn
off because of low suction.
3.10.7 Future
#1
(For Foam Pump controllers refer to section 15.9 – Proof
Pressure Switch)
For Software versions, V2.7 and greater, Future #1 relay
can be programmed to energize on any of the following
conditions: Low Pressure, Fail-To-Start, Undervoltage,
Overvoltage, Low Suction Pressure, Motor Overload,
or Load Shed, or to follow the state of input terminal #46
on TB1. Refer to Section 6.2 for programming.
Summary of Contents for Cutler-Hammer LMR
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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 ...
