Product Description Digital Solid State Starting Electric Fire Pump Controllers FTA1930

Transcription

1 Product Description Digital Solid State Starting Electric Fire Pump Controllers FTA1930 Description Firetrol FTA1930 Digital Solid State Starting Fire Pump Controllers feature soft start, soft stop and system sensing capabilities that not only provide for reduced current starting, but also offer an improved level of hydromechanical performance. The controller monitors, displays and records fi re pump system information. When called to run, the motor will accelerate beginning at 100% of motor FLA up to a maximum of 300% FLA while rated torque is reduced to 15%. When stopping, the motor will decelerate to a preset level and pause, allowing for a restart if required, limiting stress in the piping system. If no additional starting causes are present, the motor will continue to decelerate to a full stop. This controller helps to reduce water hammer in the system. Approvals Firetrol fi re pump controllers are listed by Underwriters Laboratories, Inc., in accordance with UL218, Standard for Fire Pump Controllers, CSA, Standard for Industrial Control Equipment, and approved by Factory Mutual. They are built to meet or exceed the requirements of the approving authorities as well as NEMA and the latest editions of NFPA 20, Installation of Centrifugal Fire Pumps, and NFPA 70, National Electrical Code. Standard Features The following are included as standard with each controller: Voltage surge protector Main Disconnect Switch sized for connected motor horsepower and voltage Fire pump Circuit Breaker Suitable for use as Service Equipment Motor contactor Emergency Manual Run Mechanism to mechanically close motor contactor contacts in an emergency condition Built-in Start/Stop & Emergency Stop pushbuttons to bypass automatic circuits Door mounted display/interface panel featuring a 40 Character Vacuum Fluorescent Display, Membrane Type User Control Push-buttons and easy to read LED Indicators Single handle Isolating Disconnect Switch/Circuit Breaker mechanism Digital Solid State Soft Starter POWER ON LED PUMP RUN LED PHASE FAILURE LED PHASE REVERSAL LED LOW PRESSURE LED DELUGE OPEN LED INTERLOCK ON LED TRANSFER SWITCH NORMAL LED (If unit ordered with Automatic Power Transfer Switch) TRANSFER SWITCH EMERGENCY LED (If unit ordered with Automatic Power Transfer Switch) EMERGENCY ISOLATING SWITCH OFF LED (If unit ordered with Automatic Power Transfer Switch) Minimum Run Timer / Off Delay Timer Soft Start Bypass Timer Daylight Savings Time option Weekly Test Timer Motor Acceleration Timer Elapsed Time Meter Digital Pressure Display USB Host Controller and Port Solid State Pressure Transducer Data Log Event Log (3000 Events) True RMS Metering with simultaneous 3 phase display of amps and volts Disk Error message Disk Near Full message Pressure Error message Motor Over 320% message Local Start message Remote Start message Emergency Start message Fail To Start message Soft Starter Fault/Bypass message Undervoltage message Overvoltage message Low Suction Pressure message High Speed Open Serial Communications Port NEMA Type 2 enclosure

2 Specifications Digital Solid State Electric Fire Pump Controllers FTA1930 Main Fire Pump Controller The main fi re pump controller shall be a factory assembled, wired and tested unit and shall conform to all the requirements of the latest edition of NFPA 20, Standard for the Installation of Stationary Pumps for Fire Protection and NFPA 70, National Electrical Code. The controller shall be listed by Underwriters Laboratories, Inc., in accordance with UL218, Standard for Fire Pump Controllers, CSA, and Canadian Standards Association CSA-C22.2, Standard for Industrial Control Equipment (culus), approved by Factory Mutual and approved by the City of New York for fi re pump service. Starting Method The controller shall be of the combined manual and automatic type designed for reduced current soft starting/stopping of the fi re pump motor having the horsepower, voltage, phase and frequency rating shown on the plans and drawings. The controller components shall be housed in a NEMA Type 2 (IEC IP11) drip-proof, wall mounted enclosure. Withstand Ratings (Short Circuit Current Ratings) All controller components shall be front mounted, wired and front accessible for maintenance. The minimum withstand rating of the controllers shall not be less than 100,000 Amps RMS Symmetrical at Volts*. If the available system fault current exceeds these ratings, the controllers shall be supplied with a withstand rating of 150,000 or 200,000 Amps RMS Symmetrical, as required. *Note: 100,000 Amp withstand rating not available in some larger horsepowers. Consult factory for details. Isolation Switch and Circuit Breaker The controller shall include a motor rated combination isolating disconnect switch/circuit breaker, mechanically interlocked and operated with a single, externally mounted handle. When moving the handle from OFF to ON, the interlocking mechanism shall sequence the isolating disconnect switch ON first, and then the circuit breaker. When the handle is moved from ON to OFF, the interlocking mechanism shall sequence the circuit breaker OFF fi rst, and then the isolating disconnect switch. The isolating disconnect switch/circuit breaker shall be mechanically interlocked so that the enclosure door cannot be opened with the handle in the ON position except by a hidden tool operated defeater mechanism. The isolating disconnect switch/circuit breaker shall be capable of being padlocked in the OFF position for installation and maintenance safety, and shall also be capable of being locked in the ON position without affecting the tripping characteristics of the circuit breaker. The controller door shall have a locking type handle and three point cam and roller vault type hardware. The circuit breaker trip curve adjustment shall be factory set, tested and sealed for the full load amps of the connected motor. The circuit breaker shall be capable of being field tested to verify actual pick up, locked rotor, and instantaneous trip points after fi eld installation without disturbing incoming line and load conductors. Operator Interface The fire pump controller shall feature an operator interface with user keypad. The interface shall monitor and display motor operating conditions, including all alarms, events, and pressure conditions. All alarms, events, and pressure conditions shall be displayed with a time and date stamp. The display shall be a 2-line, 20-character, vacuum fl uorescent, dot matrix type designed to allow easy viewing from all angles and in all light conditions. The display and interface shall be NEMA rated for Type 2, 3R, 4, 4X, and 12 protection and shall be fully accessible without opening the controller door. The display and user interface shall utilize multiple levels of password protection for system security. A minimum of 3 password levels shall be provided. The display shall be capable of being programmed for any language. Digital Soft Starter The digital soft starter parameters shall be programmable through the operator interface without the need to access the soft starter compartment. These settings shall include: Initial Starting Current (% FLA) Maximum Starting Current (% FLA) Acceleration Ramp Time (Seconds) Up To Speed/Stall Bypass Timer (Seconds) Deceleration Begin Level (% FLA) Deceleration Pause Level (% FLA) Deceleration Pause Time (Seconds) Deceleration End Level (% FLA) Deceleration Ramp Time (Seconds) Phase Order (ABC/CBA) Ammeter/Voltmeter The fi re pump controller operator interface shall be capable of displaying true RMS digital motor voltage and current measurements for all three phases simultaneously. Displays requiring pushbutton and selector switches to toggle between phases or current and voltage shall not be accepted. Voltage and current shall be measured by True RMS technology to provide the most accurate measurement for all sine waves, including nonsinusoidal waveforms. Average responding meters will not be accepted. Digital Status/Alarm Messages The digital display shall indicate text messages for the status and alarm conditions of: Motor On Sequential Start Time Minimum Run Time Local Start / Off Delay Time Remote Start Fail to Start System Battery Low Under Voltage Over Voltage Locked Rotor Trip Over Frequency Emergency Start Motor Over 320%

3 Drive Not Installed Disk Error Disk Near Full Motor Overload Soft Starter Fault/Bypass Pressure Error The Sequential Start Timer and Minimum Run Timer/ Off Delay Timer shall be displayed as numeric values refl ecting the value of the remaining time. LED Visual Indicators LED indicators, visible with the door closed, shall indicate: Power On Emerg. Isolating Switch Open Pump Running Low System Pressure Alarm Transfer Switch Normal Deluge Open Transfer Switch Emergency Phase Failure Phase Reversal Interlock On Data Logging The digital display shall monitor the system and log the following data: Motor Calls/Starts Elapsed Motor Run Time Last Trip Currents Elapsed Power On Time Last Breaker Trip Maximum Run Currents Minimum Voltages Minimum Run Currents Maximum Voltages Last Motor Run Time Last Phase Failure Last Start Currents Last Phase Reversal Min/Max Frequency Min/Max Pressure Event Recording Memory - The controller shall record all operational and alarm events to system memory. All events shall be time and date stamped and include an index number. The system memory shall have the capability of storing 3000 events and allow the user access to the event log via the user interface. The user shall have the ability to scroll through the stored messages in groups of 1, 10, or 100. USB Host Controller - The controller shall have a built-in USB Host Controller. A USB port capable of accepting a USB Flash Memory Disk (aka: flash drive, thumb drive, memory stick, etc..) shall be provided. The controller shall save all operational and alarm events to the fl ash memory on a daily basis. Each saved event shall be time and date stamped. The total amount of historical data saved shall solely depend on the size of the fl ash disk utilized. The controller shall have the capability to save settings and values to the fl ash disk via the user interface. Serial Communications - The controller shall feature a RS485 serial communications port for use with 2 or 4 wire Modbus RTU communications. used for both display of the system pressure and control of the fi re pump controller. Systems using analog pressure devices or mercury switches for operational control will not be accepted. The START, STOP and SYSTEM PRESSURE shall be digitally displayed and adjustable through the user interface. The pressure transducer shall be mounted inside the controller to prevent accidental damage. The pressure transducer shall be directly pipe mounted to a bulkhead pipe coupling without any other supporting members. Field connections shall be made externally at the controller coupling to prevent distortion of the pressure switch element and mechanism. Operation A digitally set On Delay (Sequential Start) timer shall be provided as standard. Upon a call to start, the user interface shall display a message indicating the remaining time value of the On Delay timer. The controller shall be fi eld programmable for manual stop automatic stop. If set for automatic stopping, the controller shall allow the user to select either a Minimum Run Timer or an Off Delay Timer. Both timers shall be programmable through the user interface. A weekly test timer shall be provided as standard. The controller shall have the ability to program the time, date, and frequency of the weekly test. In addition, the controller shall have the capability to display a preventative maintenance message for a service inspection. The message text and frequency of occurrence shall be programmable through the user interface. A Lamp Test feature shall be included. The user interface shall also have the ability to display the status of the system inputs and outputs. The controller shall not start the fi re pump motor under a single-phase condition. If the motor is already running when a phase loss occurs, the controller shall continue to run the motor, but still display a Phase Failure alarm. The fi re pump controller software shall be automatically upgradable through the USB port by simply inserting a flash disk with the new software. Fire pump controllers that require laptop computers, handheld equipment or specialized devices for software upgrades shall be prohibited. The controller shall be a Firetrol brand. Solid State Pressure Transducer The controller shall be supplied with a solid state pressure transducer with a range of psi ( bar) ±1 psi. The solid state pressure switch shall be SP ( ) (919) Sales Office: Cary, NC USA ASCO 2008

4 Sequence of Operation Digital Solid State Reduced Voltage Fire Pump Controllers FTA1930 Introduction Reference to Wiring Schematic, Publication WS Note: Firetrol schematics are drawn showing the equipment in a de-energized state. Energizing The Controller 1). Close the Isolating switch/circuit breaker by moving the handle to the ON position. Note: The unmarked, red, Interlock jumper wire, located between terminals #1 & #10 on the Relay PC board, (TB1), will prevent the MarkII unit from starting the electric motor automatically. This jumper wire should only be removed after the pressure settings have been input, and the system pressurized at, or above the Stop set point. 2). The factory programmed MarkII unit will begin initialization. Upon completion, the display will confi rm the system pressure, the time, date, and Interlock ON, which is an alarm condition and will cause the yellow alarm LED to fl ash. Any other existing alarm conditions (low system pressure, phase reversal, phase failure, deluge open), will also be sequentially and continuously displayed at this time, until each is rectifi ed. 3). With the interlock jumper still in place, the electric motor can only be started by depressing the START push-button, located on the flange of the controller enclosure, or by engaging the Emergency Run Mechanism. After all alarm conditions have been rectifi ed, and the system pressurized at or above the Stop pressure setting, then the interlock jumper may be removed for the controller s automatic operation ( standby ). With the interlock jumper removed, a drop in system pressure to the MarkII s set start point, will start the electric motor. 4). The deluge valve contacts are only operational if the factory jumper has been removed and a normally closed deluge valve contact has been placed between terminals 1 and 8 of the Relay PC board, (TB1). The Remote Start is only operational if a normally open, momentarily closed contact is wired to terminals 6 and 7 of the Relay PC board, (TB1). If engaged, the Emergency Run Mechanism will cause the pump motor to run as described in the Emergency Starting and Stopping section.. Automatic Start and Stop 1). The pressure transducer initiates the automatic start circuits for the pump motor. When pressure falls at or below the start setting, relay 1CR is energized. 1CR contact will close, initiating the soft start feature. Another 1CR contact closes, and activates the factory set (10 second) Bypass timer feature in the MarkII. The minimum run timer feature in the MarkII is also activated. When the soft starter reaches full speed, the 1MS full speed contact will open. Relay 6CR will energize and it s contact will close, energizing contactor 1M, connecting the motor at full voltage. The Bypass time in the MarkII will time out 10 seconds after the call to start. If the soft starter fails to reach full speed, the 6CR contact will close, energizing contactor 1M, connecting the motor at full voltage. Should the soft starter encounter an over temperature condition, the over-temperature switch in the soft starter will activate, energizing relay 6CR and the MarkII display will indicate Over Temperature Bypass. The 6CR contact will close, energizing contactor 1M, connecting the motor at full voltage. The minimum run time is a part of the MarkII Menu, Timer Settings. The minimum run time factory setting is 10 minutes. In this mode, minimum run time begins when the pressure falls at or below the Start set point, calling for the pump motor to run. When pressure is restored at or above the Stop set point and the minimum run timer expires, 1CR & 6CR coils will de-energize, re-opening the normally open contacts, de-energizing the 1M coil, and the soft starter is called to ramp down the motor. If pressure is restored at or above the Stop set point of the MarkII, and even if the minimum run time has not yet expired, the manual SOFT STOP, or EMERGENCY STOP push buttons, located on the flange of the controller can be depressed to manually stop the pump. This also resets the minimum run time function of the MarkII. The pump motor will run until the SOFT STOP pushbutton or the EMERGENCY STOP push-button is depressed. When the SOFT STOP push-button is pressed, an input to the soft starter STOP contact, initializes the ramp down sequence. If pressure has been restored, the ramp down sequence will continue until the motor is stopped. If pressure has not been restored at or above the STOP setting, the pump motor will restart when the push-button is released. When the EMERGENCY STOP push-button is pressed, it s input to the soft starter STOP contact signals the soft starter to stop immediately, bypassing the soft stop, whether pressure has been restored or not. Manual Start and Stop The pump motor may be manually started by using either the START push-button mounted on the flange of the enclosure or by using a normally open, momentarily closed, remote start push-button connected to terminals

5 6 and 7. When the START push-button is depressed, or a remote start signal is seen through terminals 6 & 7, the MarkII will output through the relay pc board to 1CR relay coil and the sequence of events described in section Automatic Start & Stop will begin. The MarkII minimum run time feature will not be activated. The pump motor will continue to run until the SOFT STOP, or the EMERGENCY STOP push-button is depressed. Note: SOFT STOP ramps the motor down to stop. EMERGENCY STOP shuts the motor down immediately. Deluge Valve Operation To operate the controller utilizing a deluge valve, the wire jumper between terminals 1 and 8 must be removed and a normally closed, open to run deluge valve contact wired in its place. When the deluge valve contact opens, relay 1CR coil is energized, and the sequence of events described in section Automatic Start & Stop will begin. The MarkII minimum run time feature is also activated. When the deluge valve contact closes, and minimum run time expires, relays 1CR & 6CR are de-energized, de-energizing 1M coil. The SOFT STOP contact on the soft starter is closed, and the motor will ramp down to stop. Shutdown Interlock Operation The shutdown interlock, if used, is a normally open, closed to interlock contact wired to terminals 1 and 10. When the interlock contact is closed, relay 1CR cannot be energized by inputs to the MarkII from the pressure transducer, or the deluge valve. The controller may be started manually by depressing the START push button. See the specifi c starting operation for more details. Pump Motor Starting Sequence Whenever relay 1CR, and sequentially, after the bypass time expires, 6CR coils are energized, line voltage is connected to the motor windings. During Solid State Reduced Voltage starting the following sequence occurs. 1). 1CR contact closes to the soft start (1MS) START contact. 1MS connects motor terminals T1, T2, and T3 to the power source. This motor will accelerate along a ramp beginning at 40% of normal starting current and 15% of full voltage torque. 2). When the MarkII bypass time expires (factory set at 10 seconds), or the motor has reached full current and torque, 6CR relay is energized, allowing contactor 1M to energize, and reconnect terminals T1, T2, and T3 to the power source. The motor is now running at full voltage, and speed. Emergency Starting and Stopping The controller is equipped with an emergency run mechanism for use in the event of a coil burnout or other electrical problem which would prevent normal starting of the pump motor. The mechanism attempts to both electrically and mechanically start the pump motor. When the emergency run mechanism is utilized, the 1M coil is energized, closing the contacts leading to the motor windings. This, in effect, attempts to electrically start the pump motor. The emergency run mechanism also manually closes the 1M contactor, starting the motor at full voltage, bypassing the SOFT START module. This will run the motor as long as the main three phase power is available. If the pump motor is running via the emergency run mechanism, DO NOT release the mechanism to stop the motor. Place the isolating switch/circuit breaker handle in the off position, then release the emergency run mechanism. Releasing the mechanism while the motor is running could result in damage to the motor or the motor contactor. Note: The emergency run mechanism is not intended for, nor should it be used as a testing device. Its sole purpose is to attempt to start the pump motor in the event of a failure. Power Available and Phase Reversal LEDs The green POWER AVAILABLE led is illuminated whenever the system is energized. PHASE FAILURE illuminated led, DOES NOT MEAN THAT THE CONTROLLER HAS BEEN DISCONNECTED. Hazardous voltages may exist. PHASE REVERSAL led is illuminated when phases are reversed. Under a phase reversal condition POWER AVAILABLE LED and PHASE REVERSAL LED are both illuminated. THE CONTROLLER WILL NOT UTILIZE THE SOFT START FEATURE IF A PHASE REVERSAL CONDITION EXISTS. Phase reversal is an unsafe condition. The normal standby controller condition is: POWER AVAILABLE - illuminated green PHASE REVERSAL - Not illuminated rdy (ready) (on SOFT START module) SQ ( ) (919) Sales Office: Cary, NC USA ASCO 2008

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