Honeywell SYA14 Series Manual page 355

Description and Operation
Receiver Indicators
The receiver has five LED indicators (see figure 1-7). The yellow signal margin indicator
located at the top aids in the alignment of the perimeter device. The signal margin indicator
will flash repeatedly if the light received by the receiver is less than required. This condition
will alert maintenance personnel that preventive maintenance must be performed to prevent a
shutdown condition.
The yellow reset mode indicator illuminates during normal operation (manual mode). This
indicator flickers when a reset is required (press and release the system restart push-button).
The red and green LEDs indicate output relay status or the interruption of the sensing beam.
The green indicator is illuminated when the perimeter device is operating normally (no
interruption of the sensing beam) and the output relay is closed. This indication must be
present before a machine is put into operation. If the sensing beam is interrupted, the output
relay is de-energized (opens) and the perimeter device generates a STOP signal within 20
milliseconds. During this condition, the red LED illuminates and the green LED turns off.
When the sensing beam is no longer interrupted and reset is actuated, the red LED turns off
and the green LED is illuminated.
IMPROPER PERIMETER DEVICE OPERATION
The emitter and receiver must be set to the same light emission frequency for proper
operation.
Failure to comply with these instructions could result in death or serious injury.
The yellow emission frequency indicator is illuminated if set for the F1 frequency. The
indicator is not illuminated if the device is set to the F2 frequency.
Figure 1-7 Receiver Indicators
LED Location
R1 Receiver
R2 Receiver
R3 Receiver
R4 Receiver
R5 Receiver
8 Honeywell • MICRO SWITCH Sensing and Control
Color Function
Yellow Signal Margin (alignment)
Yellow Reset Mode
Green Energized Relay (output status)
Red De-energized Relay (output status)
Yellow Emission Frequency
FF-SPS4 Series Installation Manual
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