The controller shall have two sets of Form “C” contacts for Pump Running, Phase Reversal, and Power/Phase Failure, and
one set of Form “C” contacts for Trouble. The Trouble contacts shall be activated by the following conditions: Invalid
Configuration Memory, Emergency Manual Start, Pump Running, Phase Failure, Phase Reversal, Overload, Locked
Rotor, Fail-to-Start, and Lockout.
The controller shall be equipped with LXi intelligent fire pump control system logic. All firmware shall be non-volatile
flash based CPLD ( complex-programmable logic device). The boot-up time for the logic shall be 3 seconds or less.
Controllers that do not boot-up and allow the pump to be started in 3 seconds or less are not acceptable. An RS232 serial
port shall be supplied for downloading event history to a PC for analysis and printing.
The digital pressure readings and settings shall be displayed on the LXi LCD mounted on the enclosure flange. The LCD
screen shall be 4 x 20 (4 lines of 20 characters) per screen, and the screens may be scrolled to give a total of 320
characters. The real time display shall give simultaneous 3-phase digital amps and volts for the pump power, and digital
display for the system pressure. Controllers that do not simultaneously display digital 3-phase amps, line-to-line volt
readings, and system pressure, are not acceptable.
The event alarm caches shall be compartmentalized, and no compartment shall over-ride any other compartment. The
compartments allow for analysis of four types of information events without having to look through all events including
those not related to a problem. Events shall be shown with Date and Time for each event occurrence:
1. Events that have occurred during a pump idle period
2. Events that occurred during the last start period
3. Events that occurred during the last run period
4. Events that occurred during the last stop period.
The LED displays shall be mounted on the enclosure flange and have an LED for the following:
Power Available Fail to Start Lockout On
Low Suction Phase Reversal Run Timer On
Pump Start Delay On Shorted SCR Pump Running
Locked Rotor Overload Overtemp SCR
Pressure Switch Start Local Manual Start Remote Start
Emergency Manual Start Local Manual Stop Start Timer/Accelerate
LED’s shall be multi-color; red for critical alarms, yellow for informational and green for status.
Programming of the LXi logic shall be from the touch pad mounted on the enclosure flange. Programming shall be
password protected so that only authorized personnel can change the logic functions. The fire pump controller shall be
Model LXi 1100 equipped with LXi Logic as manufactured by Hubbell Industrial Controls, Inc.
