IRIS S55XX SERIES VIEWING HEADS APPLICATION MANUAL
PAGE 4
moved from the signal processor, which powers the
viewing head, and then reapplied, the signal proces-
sor automatically re-sends the stored parameters
to the viewing head. In addition, at the front panel
of the signal processor the operator may also select
“CAL”, a semi-automatic mode which will help to
speed up the setup. This is explained in detail in the
section
CALIBRATING THE S550B
, and further
illustrated in
FIGURE 8: S550B PROGRAM-
MING FLOWCHART
.
The S550B can be described as a dual-sensor viewing
head where the gain and filter selections are adjusted
and stored remotely by the signal processors to which
it is connected.
MODEL S552B GENERAL DESCRIPTION
The S552B viewing head is designed for IR sensing
only. It is basically an S550B without the UV capa-
bility, and a single line display. The IR pulse rate is
displayed in Red. The Signal Processor detects and
identifies the viewing head model to which it is con-
nected, and will only allow adjustments related to that
model to be performed. In the Model S552B, these
adjustments are:
a) Filter Selection
1-8
b) IR gain
0-699
In addition, features such as CAL are limited to the
features of the attached viewing head, in this case
the S552B. These features are further illustrated
in
FIGURE 9: S552B PROGRAMMING FLOW-
CHART
,
MODEL S556B GENERAL DESCRIPTION
The S556B viewing head is designed for UV sensing
only. It is basically an S550B without the IR capabil-
ity. The Signal Processor detects and identifies the
viewing head model to which it is connected, in this
case the model S556B, and will only allow adjust-
ments related to that model to be performed. In the
Model S556B, this adjustment is:
a) UV gain 0-99
In addition, features such as CAL are limited to the
features of the attached viewing head, in this case the
S556B. These features are further illustrated in the
S556B PROGRAMMING FLOWCHART, shown in
Figure 10 on page 19.
VIEWING HEAD WIRING
Viewing heads are wired to the appropriate terminals
located on the bottom of the P522, P531 and P532
signal processors, and on the terminals located on the
rear PC Board of the P520. These terminals are listed
functionally in the table below.
TERMINAL DESCRIPTION
GND
Power Ground
+V
+24VDC Power to Viewing Head
SC
Shutter Drive Signal to Viewing Head
SIG
Flame Signal from Viewing Head
SIG GND
Signal Ground
FIGURE 1: WIRING TERMINATION DIAGRAM
WIRING SIDE VIEW - COVER REMOVED
CONNECT SHIELD
TO TERM 3
USE SHRINK TUBING
RED
GREEN
BLACK
WHITE
SHIELD
+V
GND
SC
SIG
GND
SIG
+24VDC
GND
SELF
CHECK
GND
SIGNAL