Burkert Type 8691 - Manual (Page 41)

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AS-Interfaceinstallation
Bus leD red and green
The red and green LEDs (bus) indicate the bus status:
leD green leD red
off off POWER OFF
off on No data traffic (expired Watch Dog at slave address does not equal 0)
on off OK
flashing on Slave address equals 0
off flashing Sensor supply overloaded or external reset
flashing flashing Teach function error (periphery error)
Table 10: LED Status display bus status
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Damage or malfunction due to penetration of dirt and humidity.
To ensure degree of protection IP65 / IP67:
▶ Screw the transparent cap in all the way.
10.6.2 Device status - assignment of the leDs
The device status of the control head (transparent cap) is displayed optically by colored high-power LEDs (Top
LEDs).
The following functions are shown as standard
color Device status
green Top LEDs on End position bottom
yellow Top LEDs on End position top
red LED flashing
alternately with the green or
yellow Top LEDs
no data traffic
or
Teach function error
Table 11: Assignment of Top LEDs - AS-Interface
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Type 8691