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U2 COMBINATION VIEWING HEAD AND SIGNAL PROCESSORS

66-2071—02

IRDA

Enables or disables communications through the palm.

Enabled by default.

RS485

Sets modbus to either READ ONLY or read and writable

(WRITE OK). Read and writable by default.

0 OR 4-20

Sets the current output to either a 0-20mA output or a 4-20mA

output scale. The 4-20mA output scale is used by default.

Table 4. Basic MODBUS Registers Map.

Register

Name

Description

Minimum Maximum Size

40001

FLAMECOUNT Flame count of active channel (read only)

3425

16 bit

40002

PROCSTATUS

Bit mask: only 4th bit (4 of 20) is writable, other bits are read

only

Not used

(0000 0001) don’t care

Relay

(0000 0010) 1=on, 0=off

Not lockout

(0000 0100) 1=not lockout, 0=lockout

Not panel lock

(0000 1000) 1=unlocked, 0=locked

4 to 20 (output) (0001 0000) 1 (default)=4-20mA, 0=0-

20mA

File

(1110 0000) 3 bits are the file in use (0-7)

255

8 bit

40003

FLAMEON

Flame On setting for current active file

3425

16 bit

40005

FLAMEOFF

Flame Off setting for current active file

3424

16 bit

40007

OUTPUTGAIN

Gain of the0/4-20mA output for the current active file

8 bit

40010

IRGAIN

IR sensor gain setting for current active file

8 bit

40011

IRFILT

High pass IR sensor filter setting for current active file. 0=8Hz

(default), 1=16Hz, 2=24Hz, 3=33Hz, 4=52Hz, 5=75Hz,

6=100Hz, 7=155Hz, 8=215Hz, 9=300Hz

8 bit

40012

UVTGAIN

UV tube gain setting for current active file

8 bit

40015

UVSSFILT

High pass solid state UV sensor filter setting for current active

file. File 0=8Hz (default), 1=16Hz, 2=24Hz, 3=33Hz, 4=52Hz,

5=75Hz, 6=100Hz, 7=155Hz, 8=215Hz, 9=300Hz

8 bit

40016

UVSSGAIN

Solid state UV sensor gain setting for current active file

8 bit

40019

TEMPERATURE Current internal temperature of U2 (read only)

-67

261

16 bit

40021

TIMEDELAY

Time Delay setting (in seconds) for current active file

8 bit

40022

FFRT

FFRT (flame failure response time) setting (in seconds) for

current active file

8 bit

40023

VERSION

Firmware version (read only)

-32768

32767

16 bit

40085

BAUD

Baud rate setting (bits/second). Only affects RS-485

communication, not IRDA. Default is 9600. The U2 and the

master device must have the same baud settings.

1152

16 bit

40086

PARITY

Parity setting. Only affects RS-485 communication, not IRDA.

0-no parity (default), 1=odd parity, 2=even parity

8 bit

40087

ADDRESS

Modbus address of U2 used by RS-485 and IRDA. Each flame

monitor must have a unique address.

247

8 bit

40092

NUMFILES

User set limit on the number of files able to be used. Default=8. 1

8 bit

40093

FILE

Current active file number. Default=0.

8 bit

40095

TUBEFLAME

Flame count from the UV tube sensor only (read only)

-32768

32767

16 bit

40096

IRFLAME

Flame count from the IR sensor only (read only)

-32768

32767

16 bit

40097

SSUVFLAME

Flame count from the solid state UV sensor only (read only)

-32768

32767

16 bit

Содержание U2

Страница 1: ... technology does not provide satisfactory results The solid state UV photodiode has a peak response at 310 nm This sensor is suitable for gas oil and coal The principle of flame monitoring is flicker frequency based User selectable high pass filters are used to reject signals that are from background radiation The solid state IR photodiode has a peak response at 1400 nm This sensor is suitable for...

Страница 2: ...ble for appli cations with higher ambient temperatures Please contact your distributor or Honeywell for assistance Weight 2 8 kg 6 1 lbs Physical Dimensions Diameter 11 7 cm 4 6 inches Length 15 5 cm 6 1 inches Paint Silicone free powder coat Mounting Process Connection 1 NPT female NOTE Refer to for Fig 9 and Fig 10 mounting examples Pipe Fit Conduit Connection PF 3 4 NPT FFRT 1 3 second nominal ...

Страница 3: ...xample igniter equipment 3 Install a ground wire from the ignition transformer case to the igniter assembly 4 Ensure all igniter wires and cables show no signs of wear Replace any igniter cables or wires that are frayed or cracked 5 The U2 must be electrically isolated from the burner front a Electrical isolation can be accomplished by install ing an Ultem locking coupler adapter R 518 PT12 or R 5...

Страница 4: ...een the sight pipe and the U2 allowing the U2 to be placed further away from the heat source Refer to the Fiber Optic Manual 69 2683 or contact your distributor or Honeywell for assistance with fiber optic selection and pricing The U2 models also have an internal sensor for measuring temperature To access the temperature reading at the U2 refer to Fig 2 Purge Air The U2 does not have a purge air c...

Страница 5: ...larly true when flue gas recirculation is used There will however be a relatively stronger signal near the root of the flame and the more intense spot should be located during the aiming or sighting process The root or intense spot may be further out than with the standard gas burner so it is imperative that a swivel mount be used when making sighting adjustments As an example of proper sighting c...

Страница 6: ...e also provided The Flame On threshold and Flame Off threshold can then be set to monitor the target burner flame but to reject background radiation from other burners In order to energize the flame relay the flame count must be higher than the programmed Flame On threshold for greater than the Time Delay value Once the flame relay is energized the flame signal can fall below the programmed Flame ...

Страница 7: ... The default value is 75 Filter SSUV NOTE If sensor is not available in your model then no menu item will exist for sensor setting See Table 1 on page 2 to determine which sensors are active in your U2 model Displays the current solid state UV high pass filter adjustable 0 9 The default filter is 3 See the filter cutoff frequencies in Hertz in the table below M33314 GT32 G 32 F 09 GI32 FI04 GM32 0...

Страница 8: ... unknown state If not being used or if using the default file 0 connect the file input wire to ground When connected to 24 Vdc the file selection 1 The other means of selecting and activating a file is via the Modbus RTU interface using register address 40093 Modbus interface can be accomplished via FlameTools software or another Modbus RTU interface Panel Tapping the ENTER STORE button when PANEL...

Страница 9: ...d modification which is available from the factory If the password is forgotten or lost the user must contact the factory for assistance with unlocking the panel Refer to the Panel section of this manual and or contact the factory for assistance Bad Message If the display shows Bad upon entering the access code for the PANEL Lock feature it means the access code that was just entered is incorrect ...

Страница 10: ...Hz 9 300Hz 0 9 8 bit 40012 UVTGAIN UV tube gain setting for current active file 0 99 8 bit 40015 UVSSFILT High pass solid state UV sensor filter setting for current active file File 0 8Hz default 1 16Hz 2 24Hz 3 33Hz 4 52Hz 5 75Hz 6 100Hz 7 155Hz 8 215Hz 9 300Hz 0 9 8 bit 40016 UVSSGAIN Solid state UV sensor gain setting for current active file 0 99 8 bit 40019 TEMPERATURE Current internal tempera...

Страница 11: ...ER CONTROL BNR 1 31 BNR 2 12 BNR 2 32 BNR 3 13 BNR 3 33 BNR 4 14 BNR 4 34 BNR 5 15 BNR 6 16 ADDRESS BOILER 3 COMMOD USB TO RS422 485 CONVERTER M33862 WIRE SIDE PRODUCT SIDE A TDA B TDB C RDA D RDB E GND TDA TDB RDA RDB GND NOTES SELECT THE APPROPRIATE DIP SWITCH SETTINGS FOR RS 485 COMMUNICATION PER THE VENDOR S INSTRUCTION SHEET SOFTWARE DRIVERS MAY BE DOWNLOADED FROM B B ELECTRONICS WEBSITE CONV...

Страница 12: ...U2 COMBINATION VIEWING HEAD AND SIGNAL PROCESSORS 66 2071 02 12 Fig 5 U2 dimensions 3 4 19 NPT CONNECTION 2 29 32 73 1 25 1 25 NPT CONNECTION 5 3 32 130 4 19 32 118 M34431 ...

Страница 13: ...threshold lower Flame On threshold below flame on signal e Repeat all tests if any changes are made to Gain Flicker set point Flame On and Flame Off Threshold NOTE Above is a simplified version of discrimination adjustments Vessels equipped with a large number of burn ers T fired units and cross fired boilers will require several adjustments including use of multiple files for obtaining the requir...

Страница 14: ...carried out under supervised conditions and limited to minimum time Remove bypasses as soon as configuration and setup is completed For vessels equipped with gas igniters follow setup procedure described above For best discrimination two to three files may be required to accommodate three different fuel firings 1 Establish igniter flame as described above 2 Start warm up oil burner 3 Go to IR menu...

Страница 15: ... value 10 Restart the burner being monitored 11 Ensure the current flame count is greater than the FLAME ON value MAINTENANCE The UV tube sensor has a limited lifespan Under extreme conditions the lifespan can be as low as 10 000 hours However in the most favorable conditions the lifespan is 50 000 hours or more The service life of the UV tube sensor is considered terminated when the sensitivity b...

Страница 16: ...ghting opposed fired burners UV VIEWING HEAD SIGHTED ON UV ZONE BURNER NOZZLE CENTERLINE UV RADIATION ZONE M33286 VIEWING HEAD BURNER NOZZLE NO 1 NO 1 FLAME ENVELOPE NO 2 FLAME ENVELOPE VIEWING HEAD BURNER NOZZLE NO 2 HIGH FREQUENCY IR ZONE LOW FREQUENCY ZONE LESS THAN 36Hz HIGH FREQUENCY IR ZONE M33287 ...

Страница 17: ...ided via a Y or T in between the locking coupler and the sight pipe to reduce conducted heat and to keep the sight pipe and U2 lens clean of debris and dirt Refer to the Mounting and Sighting section on purge air requirements For electrical isolation reasons the purge air line should be installed using an insulating material such as a rubber hose in between the purge air line and the viewing head ...

Страница 18: ...or file 6 Flame On setting for file 7 51 3425 16 bit 40101 40111 40121 40131 40141 40151 40161 40171 FLAMEOFF Flame Off setting for file 0 Flame Off setting for file 1 Flame Off setting for file 2 Flame Off setting for file 3 Flame Off setting for file 4 Flame Off setting for file 5 Flame Off setting for file 6 Flame Off setting for file 7 50 3424 16 bit 40102 40112 40122 40132 40142 40152 40162 4...

Страница 19: ...118 40128 40138 40148 40158 40168 40178 IRGAIN IR sensor gain setting for file 0 IR sensor gain setting for file 1 IR sensor gain setting for file 2 IR sensor gain setting for file 3 IR sensor gain setting for file 4 IR sensor gain setting for file 5 IR sensor gain setting for file 6 IR sensor gain setting for file 7 0 7 8 bit 40109 40119 40129 40139 40149 40159 40169 40179 OUTPUTGAIN Current outp...

Страница 20: ...f 400 used when all 3 sensors are active to total a count of 1200 Saved at the time the auto filter routine was run Registers correspond to Filter0 through Filter9 read only 0 99 8 bit 40240 to 40249 IRSAVEDGAIN600 The gain at the IR filter to give a count of 600 used when 2 sensors are active to total a count of 1200 Saved at the time the auto filter routine was run Registers correspond to Filter...

Страница 21: ...e current file determined by the auto gain function read only 0 99 8 bit 40293 USSSSAVEGN Saved gain of the solid state UV sensor from the current file determined by the auto gain function read only 0 99 8 bit 40294 SAVEFILE Saves the active file at the time of auto gain Reads 255 if the auto gain function has never been run read only 0 255 8 bit Table 5 Extended Modbus Register Map Continued Regi...

Страница 22: ...ed system with the aim of achieving or maintaining a safe state for the plant in respect of a specified hazardous event Proof Test Periodic test performed to detect failures in a safety related system so that if necessary the system can be restored to an as new condition or as close as practical to this condition MTTR Mean Time To Restoration The average duration required for restoration of operat...

Страница 23: ...y high or continuously low signal which could potentially be caused by a fault Each relay must be driven by an alternating signal of the proper frequency and duty cycle from the processor Proof Test Interval The Proof test must be conducted every 1 to 5 years This range is given to allow for the test to be performed during the normally scheduled burner shutdown period It is the responsibility of t...

Страница 24: ...tion and using a multimeter ensure there is no continu ity between the relay common and flame relay wires after the FFRT Flame Failure Response Time has elapsed 5 Measure the current draw of the U2 and ensure it is less than 120 mA 6 Change one of the settings of the signal processor and store the changed setting Remove power to the signal processor for 10 seconds Restore power to the signal proce...

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