Festo SDBT-MSX, Instructions & Operating

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7 Malfunctions
7.1 Diagnostics via LEDs
Display Meaning Measure
Status indication:
–
Piston outside the sensing range
– Piston not at switching point
Normal operating case Both LEDs
off
Error:
–
Power supply fault
– Connecting cable or sensor defective
– Check power supply
– Check connecting cable
– Replace device
Green LED
flashes at
6 Hz Hardware error – Disconnect and connect proximity
sensor
– Replace device
Tab. 5
7.2 General malfunctions
Error description Possible cause Measures/remedy
Proximity sensor defective – Replace proximity sensor
Operating voltage not connected
or outside the operating voltage
range – Comply with operating
voltage range
Short circuit or overload at the
output – Rectify short circuit/over­
load
Magnetic or ferromagnetic objects
close to the proximity sensor – Keep magnetic or ferromag­
netic objects clear of the
proximity sensor
– Conditions during teach­in of
the switching point must cor­
respond to operating condi­
tions (e.g. no screwdriver in
the locking screw)
Incorrect or unexpected
signals at the output
Orientation of the proximity
sensor rotated 180° in the slot
after adjustment of the switching
point – Reset switching point (with
auto teach­in or operating
key)
Proximity sensor defective – Replace proximity sensor Switching output does not
react in accordance with
the settings
Short circuit or overload at the
output – Rectify short circuit/over­
load
Capacitive operating key
does not react to input Dirt or moisture on the proximity
sensor – Wipe proximity sensor with a
dry cloth
Tab. 6
8 Technical data
SDBT-MSX
Operating voltage range [V DC] 10 … 30
Max. output current [mA] 100
Operating temperature range [°C] –40 … +85 (UL: +80)
Ambient temperature with
flexible cable installation [°C] –20 … +85 (UL: +80)
Degree of protection
(EN 60529) IP 65 / IP 68
Tab. 7