IRIS P520

The IRIS Model P520 is a state of the art flame signal processor. It is designed to be used with the IRIS 500 flame monitoring viewing heads. The P520 microprocessor controlled device does the same thing as the Model 500, but does it much better. 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). The P520 communicates with the remote computer through its RS-232 serial port at 4800 baud, or RS 422 differential port. The front panel of the P520 plug-in module is shown on the back page. Note the two LED (light emitting diode) displays; a four digit readout, and a bar graph, both representing flame signal strenght. In addition there are three discrete LEDs and 11 push button switches.
- Front panel or rack installation
- 100 % fail safe and self checking

DESCRIPTION Flame signal processor

ELECTRICAL
INPUT POWER
(with one V.H.)

26VDC + 5% -20%, 300 mA
(100 mA for each additional V.H.)

ENVIRONMENTAL
Ambient Temperature

0 イ to +50 イ

CABLE
(Between Viewing Head and Signal Processor)

4 conductor, #18AWG, one wire shielded with braided shield for flame signal

OUTPUT
Flame Relay
Self-Checking Relay

Analog Flame Signal
Power to Viewing Head

2 From C Contacts
1 From C Contact
Contact Ratings:
Max switching power 60W 100VA
Max switching voltage 220V AC, DC
Max switching current 2A
0 to 20 mA current output for remote meters,
360 ohm max resistance
+26 VDC, fused .25A
+14.3 VDC Pulsing .2 Sec ON .8 Sec OFF

INPUT
Channel Select
(Isolated Input)
Flame Signal from V. H.
(Isolated Input)

V in 7.5 - 30 VDC range (Input R = 3900 ohms)
26 VDC, 6.4 mA
10 VDC, 2.3 mA
Vin 7.5 - 30 VDC range (Input R = 3900 ohms)
13.6 VDC, 3.2 mA

SERIAL COMMUNICATION
RS - 232 COM port on personal computer
at 4800 Baud
RS - 422 (Differential) on IRIS P520
at 4800 Baud

Input / Output serial communication between PC and IRIS P520
Input / Output circuits photocoupler isolated from P520 power supplies and ground

DESCRIPTION	Flame signal processor
ELECTRICAL INPUT POWER (with one V.H.)	26VDC + 5% -20%, 300 mA (100 mA for each additional V.H.)
ENVIRONMENTAL Ambient Temperature	0 イ to +50 イ
CABLE (Between Viewing Head and Signal Processor)	4 conductor, #18AWG, one wire shielded with braided shield for flame signal
OUTPUT Flame Relay Self-Checking Relay Analog Flame Signal Power to Viewing Head	2 From C Contacts 1 From C Contact Contact Ratings: Max switching power 60W 100VA Max switching voltage 220V AC, DC Max switching current 2A 0 to 20 mA current output for remote meters, 360 ohm max resistance +26 VDC, fused .25A +14.3 VDC Pulsing .2 Sec ON .8 Sec OFF
INPUT Channel Select (Isolated Input) Flame Signal from V. H. (Isolated Input)	V in 7.5 - 30 VDC range (Input R = 3900 ohms) 26 VDC, 6.4 mA 10 VDC, 2.3 mA Vin 7.5 - 30 VDC range (Input R = 3900 ohms) 13.6 VDC, 3.2 mA
SERIAL COMMUNICATION RS - 232 COM port on personal computer at 4800 Baud RS - 422 (Differential) on IRIS P520 at 4800 Baud	Input / Output serial communication between PC and IRIS P520 Input / Output circuits photocoupler isolated from P520 power supplies and ground