Honeywell SYA14 Series Manual page 21

2.5.3 Test Indicator (emitter)
Test
Normal
operation
red
FF-SYA Series light curtains provide a connection for testing the state of external contacts in
case of long machine working cycle. The test contact allows verification of external safety-
related electromechanical components before each machine cycle. When the contact in the
external test circuit opens, the FF-SYA Series light curtains switches to the alarm state. The
red test indicator turns on and the fail safe static outputs remain open while the test circuit is
open.
The customer is responsible for providing the external test circuitry. See Electrical
Connections chapter.
Figure 2-10 Receiver Indicators
2.5.4 Operation Indicators (receiver)
OFF ON
red green
Outputs are
closed
The operation indicators are two green and red LED indicators that provide operation
status. The green LED indicates the receiver is operating normally and the sensing field is
clear. This indicator must be on to ensure the equipment is working properly (the red LED
will be off). The red LED indicates that the light curtain is in an alarm state. If the sensing
field is interrupted, the FF-SYA Series light curtain will immediately generate a stop signal.
In this condition, the green LED will be off.
107031-23 EN FR26 GLO 1199 Printed in France
Test
Test mode
red
Operation status indicators
operation status
(red and green)
indicators (red and
green)
Signal strength indicator (yellow)
signal strength indicator
(yellow)
Cross-talk indicator (red)
cross-talk indicator
(red)
OFF ON
red green
Outputs are
open
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