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SIGNAL PROCESSOR FOR FLAME MONITOR SYSTEM
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GENERAL DESCRIPTION
The IRIS Model P520 is a state of the art flame signal processor. It is
designed to be used with the IRIS S5xx, S55x and S55xB series of Viewing
Heads.
The IRIS Model P520 shares the same electrical specifications as the IRIS
Model P522, however, the P520 is a plug-in module designed to conform to the
DIN 41494 19inch card frame system. A rear backplane PC is required for
installation.
In addition to the four LED's on the front panel, a digital readout and
bar graph provide constant and concise information on the system
status.
The front panel also provides a number of controls for setting up and
operation of this microprocessor based flame monitoring signal processor.
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MAIN FEATURES: MODEL P520 |
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Analog bar graph flame signal display |
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4-Digit digital flame signal display |
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Fail-safe self-checking |
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Digital set points for Flame On and Flame Off |
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Adjustable Flame Out time delay |
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Adjustable Flame On time delay |
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Separate analog and digital signal processors |
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0-20mA or 4-20mA current driven output for an analog remote meter |
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Two complete sets of set points, gain settings and time delays that can be programmed
locally or remotely and can be selected remotely |
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Viewing head switching relay for igniter/main burner |
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Serial communication capability using RS-422 or RS-232 with a host computer for data
acquisition and complete remote programming |
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Self-checking relay contacts available for DCS |
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Easy installation brackets and rear mounted wiring terminals |
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Operates on 24VDC power or 24VDC backup |
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APPLICATIONS: |
Discriminates Between All Types Of Burner Flames
- Power Utility Boilers
- Industrial Power Boilers
Discriminates Between Main Flame And Unwanted
Background
- Liquor Recovery Boilers
- Grate Fired Boilers
- Lime Kilns
In the Process Industries
- Claus Reactors (H2S)
- Duct Burners
- Hydrogen Burners
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LOCAL OR REMOTE PROGRAMMING
CAPABILITY: |
It is possible, for
example, to program the FLAME ON and FLAME OFF set-points locally (from
the front panel) or remotely (from a host computer) using FlameTools software.
The P520 communicates with the remote computer through its
RS-422 to RS-232 converter at either 4800 or 9600 baud selectable at the P520 processor
front panel. |
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APPROVALS: |
| The IRIS Model P520 Signal Processor has
FM
(Factory Mutual) approval and CSA (Canadian Standards Association) certification. |
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SPECIFICATIONS: MODEL P520 |
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ELECTRICAL |
Input Power |
26 VDC +5% -20%, 300 mA with one Viewing Head
(24VDC when not using battery backup)
(100 mA for each additional Viewing Head) |
| Power to Viewing Head |
+26 VDC, fused @ 0.25A |
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| ENVIRONMENTAL |
Ambient Temperature |
0oC to 50oC (32oF to 122oF)
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| CABLE |
Signal Processor to V.H. |
4 conductor, #18AWG one wire with braided shield |
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OUTPUTS |
Flame Relay |
2 form C contacts |
| Self-Checking Relay |
1 form C contacts |
| Relay Contact Ratings |
Max switching power 60W/125VA
Max switching voltage 220VDC, 250VAC
Max switching current 2A |
| Analog Flame Signal |
0 to 20 mA or 4 to 20 mA output for remote meters
360 ohm maximum resistance |
| Power to Viewing Head |
+26 VDC, Self Resetting fused, 0.25A
+14.3 VDC Pulsing 0.2 Sec ON, 0.8 Sec OFF |
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INPUTS |
Channel Select (Isolated Input Req. 2 wires) |
Vin 7.5-30 VDC range (Input R=3900 Ohms)
26 VDC, 6.4mA
10 VDC, 2.3mA |
| Flame Signal from Viewing Head |
Vin 7.5-30 VDC range (Input R=3900 Ohms)
13.6 VDC, 3.2mA |
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| SERIAL COMMUNICATION |
RS-422 (Differential)
4800 or 9600 baud |
Input/Output circuits photo coupler isolated from P520 power supplies and ground.
Baud rate selectable from front panel of P520 |
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