Honeywell SYA14 Series Manual page 22

2.5.5 Signal Strength Indicator (receiver)
yellow
Optimum
signal
The signal strength indicator is a yellow indicator which flashes repeatedly if the received light
level is lower than the normal operating level, but is still sufficient for operation. If the received
light level drops too low, an alarm state results and the light curtain generates a stop signal. To
prevent unnecessary shutdowns, this indicator will signal the need for cleaning and/or alignment.
This indicator also provides usefull indication for beam alignment during the installation step.
2.5.6 Cross-talk indicator (receiver)
No cross-talk
red
The cross-talk indicator is a red LED which lit on if the receiver receives two different signals
from two different emitters. In this case, the light curtain is maintained in a lock-out condition.
This LED helps identify cross-talk between light curtains. For correct operation this LED shall
be off. To go back to normal operation, switch the power off and eliminate the interferences by
reversing systems emitting orientation, or by using opaque screens, or by adjustings the
adequat emission power regarding the application (see chapter 3.5. Mutual Interference or
Cross-talk).
2.6 Mirrors
Mirrors provide a means to guard more than one side of a danger zone with one light
curtain. One or two mirrors can be used with a emitter and receiver pair. Each mirror
reduces the scanning range by 10 % (FF-SBSMIR ... series) or 30 % (FF-SLC ... MIR
series). See the Scanning Range with Mirrors table below.
2.6.1 Scanning Range with Mirrors FF-SBSMIR ... Series
FF-SYA Nominal Scanning
Series Range
FF-SYA14 0 to 6 m / 0 to 20 ft
FF-SYA30 0.6 to 20 m / 2 to 65.6 ft
FF-SYA60 0.6 to 20 m / 2 to 65.6 ft
22
yellow
yellow
No signal
Low signal
Cross-talk detection
red
Scanning Range with Mirrors FF-SBSMIR ...
Series
1 Mirror 2 Mirrors
0 to 5.4 m / 0 to 17.8 ft 0 to 4.8 m / 0 to 16.0 ft
0 to 18 m / 0 to 59 ft 0 to 16.2 m / 0 to 53.1 ft
0 to 18 m / 0 to 59 ft 0 to 16.2 m / 0 to 53.1 ft
107031-23 EN FR26 GLO 1199 Printed in France