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WARNING: Selection of this control for a particular application should be made by a com-
petent professional, licensed by a state or other government. Inappropriate application of this
product could result in an unsafe condition hazardous to life and property.
DESCRIPTION
The Fireye MicroM Series Flame Safeguard Control is a compact, microprocessor based, modular
burner management system designed to provide automatic ignition and continuous flame monitoring
for commercial sizes of heating and process equipment firing any type of fuel.
The MicroM is designed to be backward compatible with existing TFM, UVM and M-Series II con-
trols. The MicroM MC120 and MEC230 chassis with the appropriate MEP100, MEP200 and
MEP500 series programmers provide operation similar to its predecessors and is usually directly
interchangeable. The MEC320 and MEC480 chassis with the appropriate MEP300, MEP400 and
MEP600 series programmers provide additional enhancements such as early spark termination, pilot
proving, and interrupted pilot.
The advantages of the MicroM are zero dependence on discrete components previously used for tim-
ing functions. The MicroM, through the use of micro-controller technology, incorporates smart diag-
nostic LED's, smart reset function for multi-burner applications, optional alpha-numeric display
output (ED510), and serial communications via a Modbus or E500 Communication Interface. The
MicroM system also provides additional amplifier selections. Along with the standard UV and Flame
Rod/Photocell amplifiers are UV self-check, Infrared, Cadmium Sulfide and a dry contact amplifier
for use with the Fireye Phoenix scanner. All amplifiers are available with flame failure response
times of 0.8 seconds or 3 seconds nominal (4 second maximum) and each provide a set of test jacks
with a uniform range of 0-10 VDC for the measurement of flame signal intensity.
A complete MicroM system includes the appropriate flame detector, plug-in amplifier and program-
mer modules which connect into a standard chassis and wiring base. Interchangeable programmer
and amplifier modules allow for complete versatility in selection of control function, timing and
flame scanning means. Functions such as relight, recycle, non-recycle, two stage capability, non-
recycle air flow, proof of air flow open at start, purge timing, early spark termination, pilot proving
and pilot cutoff are determined by the appropriate programmer module. Type of flame scanner (UV,
Repetitive UV Self-Check, Flame Rod, Photocell, IR or Cadmium Sulfide or dry contact) and the
flame failure response time (FFRT) are determined by the amplifier module. Optional plug-in daugh-
ter boards provide additional features such as remote reset, alpha-numeric display and serial commu-
nications.
The MicroM programmers are micro-controller based modules that control the sequence of opera-
tion and also interface with plug-in amplifiers, meter boards, display drivers and external communi-
cation devices. The programmers are available in an assortment of configurations necessary to
MODULAR
FLAME SAFEGUARD CONTROLS
U L
US
C
APPROVED
LISTED
MC-5000
OCTOBER 2003
FIREYE
MicroM
1
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Table of Contents
Related Manuals for Fireye MicroM Series
Summary of Contents for Fireye MicroM Series
- Page 1 Rod/Photocell amplifiers are UV self-check, Infrared, Cadmium Sulfide and a dry contact amplifier for use with the Fireye Phoenix scanner. All amplifiers are available with flame failure response times of 0.8 seconds or 3 seconds nominal (4 second maximum) and each provide a set of test jacks with a uniform range of 0-10 VDC for the measurement of flame signal intensity.
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Page 2: Specifications
The modular MicroM controls use the same wiring base as the Fireye UVM, TFM and M- Series II controls and are designed to be interchangeable with most models with little or no rewiring. See INSTALLATION OF CONTROL, SCANNERS AND FLAME DETECTORS (page 8 and 47) for temperature and wiring requirements. - Page 3 LOAD RATINGS: All Ratings are 120V, 60 Hz Table 2: Fireye Terminal Typical Load Maximum Rating @120V 60 Hz Pilot valve(s) 125 VA pilot duty (solenoid valve) plus 3 or 4 250 VA (Transformer) Solenoid valve Individual or combined...
- Page 4 MOUNTING BASE 3/16” DIA. MOUNTING HOLES (4) KNOCKOUTS (12) FOR 1/2” CONDUIT 5 3/16” 4” µΜ 3/16” MOUNTING 1/2” HOLES 5 3/16” 5 5/16” 4” 1/2”’ 13/16” DIA. 13/16” HEX 2 3/8” 2” ”L” (206) (20.6) (60.3) (50.8) 2 3/8” (60.3) 15/16”...
- Page 5 WARNING: This equipment is a Class B digital apparatus which complies with the Radio Interference Regulations, CRC c.1374. CAUTION: Published load ratings assume that no control be required to handle inrush current more often than once in 15 seconds. The use of control switches, solenoids, relays, etc.
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Page 6: Ordering Information
ORDERING INFORMATION MicroM Chassis Types (For use with MEP1XX, MEP2XX, and MEP5XX, includes dust cover) MEC120 120 VAC input with standard plug-in board. MEC120R 120 VAC input with remote reset capability. MEC120D 120 VAC input with alpha-numeric display interface to ED510. MEC120RD 120 VAC input with alpha-numeric display interface to ED510 and remote reset capability. - Page 7 MicroM Programmer Models (For use with MEC320 and MEC 480 Chassis) MEP300 Relight operation, 10 sec. fixed PTFI, 5 second pilot proving period, 5 second MTFI. lockout on flame fail during PTFI, pilot proving and MTFI. Recycle on air flow open. No post purge. Reset on line voltage. MEP304 Non-recycle on flame fail, 5 second purge, 10 second fixed PTFI, 5 second pilot proving, 10 second MTFI, interrupted pilot, early spark termination.
- Page 8 90 degrees C. Good electrical wiring practice should be followed to ensure an adequate ground system. Refer to Fireye Service Note SN-100 separately and General Grounding Rules later in this document for grounding methods.
- Page 9 WARNING: Controls require safety limits utilizing isolated mechanical contacts. Electronic limit switches may cause erratic operation and should be avoided. Care must be taken to NOT route the high energy ignition wire in close proxim- ity to the flame sensor wiring, particularly when using MERT amplifier.
- Page 10 Terminals 3, 4, or 5. To replace the fuse, remove power from the system and using a small screwdriver or similar tool, install a Fireye replace- ment fuse (P/N 23-197) or equivalent 10 amp fuse (e.g. Wickman # 19373-071-K).
- Page 11 FIGURE 2. Replaceable Fuse Location PROGRAMMER DISPSWITCH SETTINGS NOTE: The dipswitch settings become permanently stored within the programmer’s eeprom memory after 8 hours of continuous electrical operation. The first 8 hours of continuous operation is determined from the value of system hours being accu- mulated by the MicroM.
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Page 12: Led Indicator Lights
Once the switches are set, they become permanently stored after 8 hours of continuous operation or they can be manually set through the use of the optional ED510 display. Refer to the section using the optional ED510 display for detailed information. Where applicable, each MicroM programmer is shipped with dip-switch 6 set to non-recycle on flame fail, dipswitch 4 set to 5 second PTFI time, and dipswitches 1 &... -
Page 13: Lockout Codes
PTFI: This LED is illuminated only during the pilot trial for ignition period and the stabilization period when so equipped. Flame: This LED is on whenever a flame signal is detected, and the control is not in a locked out state. - Page 14 DIAGNOSTIC MESSAGES - TROUBLESHOOTING GUIDE POSSIBLE CAUSE SOLUTION Check Programmer Voltage on Terminal 5 at improper time. Inspect wiring to main fuel valve Welded watchdog relay Replace MEC Chassis Internal diagnostic failure Replace MEP Programmer Check Chassis Voltage on Terminal 3 or 4 at improper time. Inspect wiring to pilot valve and igniter.
- Page 15 Safety Shutdown In the event pilot flame is not detected at the end of the 10 second PTFI period, the pilot gas valve and spark ignition are de-energized. A safety lockout occurs which de-energizes the burner motor and energizes the lockout alarm relay circuit, lighting the Alarm LED, 15 seconds after the safety lockout occurs.
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Page 16: Timing Chart
MEP100P The MEP100P programmers provides a fixed 15 second post purge period upon detection of the operating Control (1-7) or Air Flow switch (7-6) opening. MEP100 as FLAME SWITCH (refer to Figure 11) For systems that require flame switch operation, that is, relay KF will toggle on with flame signal and off without flame signal, the MicroM provides this function when equipped with an MEP100 pro- grammer. -
Page 17: Timing Charts
The MEP230H programmer operates the same as the MEP230 with the exception of an additional 8 second pilot stabilization. After flame is detected during the trial for ignition period, the powering of Terminal 5 is delayed for eight (8) seconds. Terminal 4 remains powered during the stabilization period. - Page 18 TYPE MEP236 PROGRAMMING SEQUENCE INTERLOCK FIRING PURGE L1/7 L1/7 AIR FLOW PERIOD COMPLETE PROVEN SELECTABLE POST PURGE SELECTABLE PILOT PURGE SELECTABLE PTFI MFSP* 6 SEC 5 OR10 SEC IGNITER MAIN VALVE *MAIN FLAME STABILIZATION PERIOD Terminal #5 is energized 3 seconds after the flame is detected. Selectable Recycle/Non-Recycle operation on loss of flame after flame is proven.
- Page 19 For the MEP560 and MEP562, after pilot flame is detected, the control enters an 8 second pilot stabi- lization period with Terminal 3 and Terminal 4 energized. At the expiration of the stabilization period, Terminal 5 is energized. TYPE MEP560 PROGRAMMING SEQUENCE INTERLOCK FIRING...
- Page 20 TYPE MEP562 PROGRAMMING SEQUENCE INTERLOCK FIRING PURGE L1/7 L1/7 AIR FLOW PERIOD COMPLETE PROVEN SELECTABLE POST PURGE SELECTABLE PURGE PTFI STABLIZATION 5 OR10 SEC PERIOD 8 SEC MTFI 10 SEC Pilot stabilization timing begins as soon as flame is proven. Lockout on loss of air flow (interlock circuit) after flame is proven.
- Page 21 TYPE MEP304 PROGRAMMING SEQUENCE INTERLOCK FIRING PURGE L1/7 L1/7 AIR FLOW PERIOD COMPLETE PROVEN POST PURGE (SEE NOTE) 5 SECOND PURGE 5 SEC 10 SEC 5SEC INTERRUPTED PILOT PTFI MTFI PILOt PROVING 0 Second post purge on operating control open. 15 Second post purge on flame fail.
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Page 22: Remote Reset
FIGURE 4. PLUG -IN BOARD LOCATION AND INSTALLATION PLUG-IN BOARD (MED SERIES) STANDOFF RELEASE DIRECTION Installation WARNING: Remove power when servicing the control. For upgrading standard units or for replacing the installed plug-in board, grasp plug-in board at the top and pull away from the chassis, freeing the unit from the retaining standoff. - Page 23 ADVANCED RESET FUNCTIONS Multiple functions have been integrated into the reset push button located on the MicroM and pro- vided by way of the remote reset terminals. Among these are reset/recycle, reset from lockout only, recycle only and set unit address. The functions of the switch is determined by the length of time the push button is depressed and released.
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Page 24: Remote Display
REMOTE DISPLAY The MicroM provides an interface to the optional ED510 display module. The ED510 connects to the MicroM through the plug-in board using a ED580 cable. The ED580 cable is available in 2, 4, or 8 foot lengths. Part number 129-145 -1 (4 ft.), -2 (8 ft.), -3 (2 ft.) is available for remote mounting the ED510 Display Module and to provide NEMA 4 protection. - Page 25 Number of burner lockouts. AUTO BNR LOCKOUTS Number of hours the control has been powered. AUTO SYS HOURS 1386 Sub-menu to display the cause of the last 6 lockouts. The MODE key is required to AUTO display the actual lockouts. LOCKOUT HISTORY Sub-menu to display various operating parameters of the programmer and ampli- AUTO...
- Page 26 LOCKOUT HISTORY The sub-menu “LOCKOUT HISTORY” will display the last six (6) lockouts, along with the burner cycle and burner hour when the lockout occurred. When the MODE key is pressed, the screen will display the most recent lockout condition and the number of that lockout (e.g. LO #127 represents the 127th lockout of that control).
- Page 27 UNIT ADDRESS 00 SCRL PRESS RESET TO Force storage of dipswitch settings before 8 hours time-out. ACCEPT SETTINGS MODE AUTO Mode key returns to normal run message. SYSTEM INFO The sub-menu “SYSTEM INFO” allows the user to review information pertaining to the operation of the control (e.g.
- Page 28 DATA is the data returned and is always a series of 2 byte integers. If 4 words were requested then DBC would be 8 and there would be 8 data bytes or 4 data words containing the requested data. The format of the data is 4800,N,8,1 meaning 4800 baud, no parity, and 1 stop bit.
- Page 29 STATUS and MSGN only. Message 15, last 6 lockouts, can return data ranging from 1 to 6, with 1 referring to the most recent lockout. Message 26 returns the current operating status as well as stored burner hours and burner cycles as a snapshot of the entire MicroM system.
- Page 30 A ‘1’ in any terminal position indicates the relay is energized. Term 4 indicates the state of K1 relay, located in the MEP500 series programmers. It is suggested that repeated polling interval not be less than 200 mSec per request. Requesting data such as burner minutes, system minutes and burner cycles be kept at a minimum due to the amount of processing time required to gather that data.
- Page 31 Table 2: Program Module Identification Programmer Module Identifier MEP100 0H, 01H MEP101 0H, 02H MEP102 0H, 03H MEP103 0H, 04H MEP100P 0H, 05H MEP109 0H, 06H MEP130 0H, 08H MEP104 0H, 09H MEP105 0H, 0AH MEP106 0H, 0BH MEP107 0H, 0CH MEP108 0H, 0DH...
- Page 32 Table 3: Message Description MicroM Message L1-7 OPEN FALSE FLAME STARTING BURNER INTRLCK OPEN LOCKOUT LINE FREQUENCY NOISE DETECTED LOCKOUT FLAME FAIL - PTFI UNIT ADDRESS MTFI IGNITION TIMING FLAME SIGNAL CYCLE COMPLETE LOCKOUT AMPLIFIER HIGH COUNT FAIL LOCKOUT FLAME FAIL – MTFI LOCKOUT FALSE FLAME –...
- Page 33 address after 31 is 0. The second method is to use the local reset located on the plug-in board. It is first necessary to open the operating control (L1-7) to have the MicroM in the IDLE or STANDBY position. Depressing the reset switch for greater than 10 seconds will cause the address of the MicroM to be displayed in a binary format on the LEDs located on the programmer board.
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Page 34: Installation Testing
INSTALLATION TESTING Use of Test Meter (All Controls) Testing the Fireye MicroM Controls requires the use of a test AC/DC multimeter, with a minimum 1000 ohm/volt AC scale and 20,000 ohm/volt DC scale. With the test meter on the DC scale, and the test meter leads inserted into the test jacks on the ampli- fier (Red for positive (+) polarity, Black for minus (-) polarity), a DC voltage reading of 4.0 to 10... - Page 35 Observe the pilot flame signal on the test meter or the ED510 display. If the flame signal is below 4.0 volts DC or a reading of 10 on a remote display, re-adjust the pilot flame or realign the flame detector. WARNING: DO NOT TOUCH a flame rectification rod with power applied.
- Page 36 NO HEA T MicroM SERVICE GUIDE O.C. ON TEST JACKS ALARM BLINKING SITUATION #1 ALL TYPES NORMAL LOCKOUT 4-10 VDC INSTALL DC VOLTMETER AMPLIFIER MODULE IN TEST JACKS MP100 4-7 SECONDS SHUT FUEL MP230 PREPURGE DELAY TIME SUPPLY COCK FLAME WAIT LED COME...
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- Page 38 MEUVS1; 260 VAC across S1, S2 with MERT4 and MERT1. CAUTION: Control wiring procedures which deviate from those shown in the diagrams may bypass safety functions designed in the control. Check with the Fireye Representative before deviating from the recommended wiring diagrams.
- Page 39 FIGURE 7. WIRING ARRANGEMENT FOR PILOT IGNITED BURNERS AND PROVISION FOR MAIN FLAME STABILIZATION USING MEP236 SERIES PROGRAMMERS AIR FLOW OPERATING INTERLOCK CONTROLS FLAME SCANNER FLAME ONLY (WATCHDOG) FLAME AMPLIFIER 120VAC 50/60Hz KF-1 INTERMITTENT SPARK MAIN VALVE ALARM BLOWER MOTOR IGNITION PILOT VALVE CONTACTOR...
- Page 40 FIGURE 9. WIRING ARRANGEMENT FOR PILOT IGNITED BURNERS AND INTERRUPTED PILOT USING MEP500 SERIES PROGRAMMERS AIR FLOW OPERATING INTERLOCK CONTROL FLAME SCANNER FLAME ONLY (WATCHDOG) FLAME AMPLIFIER 120VAC 50/60Hz KF-1 INTERMITTENT INTERRUPTED MAIN FUEL ALARM BLOWER MOTER GAS PILOT VALVE PILOT GAS VALVE VALVE AND IGNITION...
- Page 41 FIGURE 11. WIRING ARANGEMENT FOR FLAME SWITCHES USING MEP100 PROGRAMMERS ENABLE/DISABLE INPUT FLAME SCANNER FLAME ONLY (WATCHDOG) FLAME AMPLIFIER 120VAC 50/60Hz KF-2 KF-1 ISOLATED SWITCHED OUTPUTS OUTPUTS REFER TO LOAD RATING VOLTAGE SOURCE * FUSE F1 CAN BE REMOVED NOTE: Air Flow LED will blink while flame is detected and KF relay is energized.
- Page 42 AIR FLOW SWITCH MULTIPLE BURNER SYSTEMS UTILIZING SEMI-AUTOMATIC OPERATION INCORPORATE THE FIREYE MODULAR MicroM CONTROLS IN A CASCADING SEQUENCE WHEN PILOT #1 IS PROVEN. TRIAL FOR IGNITION FOR PILOT #2 BEGINS. WHEN ALL PILOTS ARE PROVEN THE SAFETY SHUTOFF VALVE MAY BE MANUALLY OPENED.
- Page 43 FIGURE 14. BACKWARD COMPATIBLE WIRING USING MEP100 AND MEP200 SERIES PROGRAMMERS (PILOT IGNITED BURNERS). AIR FLOW OPERATING INTERLOCK CONTROL FLAME SCANNER FLAME ONLY (WATCHDOG) FLAME AMPLIFIER 120VAC 50/60Hz KF-2 KF-1 INTERMITTENT SPARK MAIN VALVE ALARM BLOWER MOTOR IGNITION PILOT VALVE CONTACTOR For intermittent ignition, connect to terminal 3 Combined current from Terminal 8 must not exceed 9.8 Amps...
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Page 44: Installation
When the ED510 is to be remotely mounted on the front of the control panel, the ED580 cable must contain a ferrite core, currently supplied by Fireye with the cable. The cable end with the ferrite core must be mounted at the control end. High frequency currents flow more to the surface of the conduc- tor. -
Page 45: Maintenance
Source end is defined as the originating end of the communication system Care must be taken not to route communication cables in close proximity to any starter motor con- tactors located in the control panel or across any high voltage ignition wires. Refer to Fireye bulletin E8002 for proper installation. - Page 46 Use 1/2” x 1 1/2” pipe nipple between UV1 Scanner and the cou- pling. Use 3/8” pipe nipple and a 1/2” x 3/8” bushing on UV2 installations. Request the assistance of any Fireye field office for recommendations of a proper scanner instal- lation on a non-standard application.
- Page 47 OPERATION — 45UV5 SELF-CHECKING UV SCANNER Self-checking ultraviolet scanners should be used in applications where burner firing operation is continuous or where the burner is on for long periods of time without recycling. In addition, ultra- violet self-checking systems are mandatory in some locations. The operation of this type of system consists of maintaining the flame scanning capability at all times while also proving that the ultraviolet tube is firing properly.
- Page 48 Use 6” to 8” length of pipe between scanner and hot furnace front plate. Use insulating tube (Part No. 35-69) on the end of the iron pipe. Force air into sighting tube. Use Fireye Sealing Union (Part No. 60-801). Make sure sighting tube does not extend more than halfway into refractory wall.
- Page 49 INSTALLATION - 45CM1 PHOTOCELL MOUNT Test for Incandescent Refractory Hold-ln with Photocell Detector Type 45CM1 Photocell Scanners are actuated by light energy. To assure that the flame failure response time is not extended by radiation from incandescent refractory, the following test is recom- mended: Operate the burner, following the burner manufacturer’s instructions, until the refractory is at maximum operating temperature.
- Page 50 If the flame is partly luminous, the electrode tip should extend only to the edge of the flame. It is not necessary to maintain absolutely uninterrupted contact with the flame. It is preferable to angle the rod downward to minimize the effect of sagging and to prevent it from coming in contact with any object.
- Page 51 Periodic Safety Check It is recommended that a procedure be established to test the complete flame safeguard system at least once a month,. This test should verify the proper operation of all limit switches and safety inter- locks as well as flame failure protection and fuel safety shutoff valve tightness. Rotation It is recommended that control and scanner units purchased as spares be installed periodically to ensure proper operation.
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Page 52: Standard Mounting
FIGURE 17. UV8A Scanner 2 1/4” 1/2 X 14 ST. 2” (57.2 PIPE (50.8mm 1 1/2” (38.1M UV8A UV1A3 3 FT. FLEXIBLE CABLE 1 IN. DIA. (25.4mm) UV1A6 6 FT. FLEXIBLE CABLE .700 DIA. FITTING (17.8mm) SHIELDING OF 6 FT. (1830mm) FOR WATER-TIGHT CONDUIT LEADS IS REQUIRED WARNING: The leads from the UV8A Scanner to the control must be shielded to prevent electrical... - Page 53 M-SERIES TO M-SERIES II TO MICROM CROSS REFERENCE LISTING M-SERIES M-SERIES II REPLACEMENT MODULES MicroM REPLACEMENT MODULES Part Number Chassis Amplifier Programmer Programmer Chassis Amplifier Programmer Programmer Dipswitch #8 Dipswitch #6 UVM1D MC120 MAUV1T MP100 MEC120 MEUV1 MEP100 UVM1F MC120 MAUVI MP100...
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- Page 57 Fireye warranty, as stated in its General Terms and Conditions of Sale, pertains only to the Fireye products and not to any other equipment or to the com- bined system or its overall performance.
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