Cylinder sensor with IO-Link
MK59xx
31
11 Troubleshooting
Display / problem
Cause / remedy
Both yellow switching status LEDs flash alternately at 5 Hz
Hardware fault or electronic fault in the device.
u
Restart the device.
u
If the condition persists, replace the device.
Both yellow switching status LEDs flash simultaneously at 5
Hz
Short circuit on output OUT1 and / or OUT2
1)
.
u
Remove the short circuit.
One or both switching status LEDs light up yellow although
the sensor is not damped by a magnet.
The device remembers the last valid measured value and
switches the outputs accordingly. This shows which side of
the sensor the magnet is on, even if the magnetic field be-
comes too weak.
u
Move past the device with a magnet to switch off the
LEDs.
w
Depending on the setting, the LEDs will be switched on
with one pole of the magnet and switched off with the other
polarity. When operating in Window Mode, the LEDs are
usually switched off with both polarities. See also
The green LED is off.
u
Check power supply and wiring.
Switching status LEDs are reversed.
When the cylinder is in the right end position, the left switch-
ing status LED goes on and vice versa.
The yellow switching status LED on the cable side is always
assigned to switching signal channel 1.
u
Swap the assignment manually by swapping all
parameters that affect the switching behaviour between
switching signal channel 1 and switching signal channel 2.
-or-
u
Invert the signal direction before an application teach
Error after switch point [Teach SPx]:
The cylinder is in the end position and a switch point teach
has been carried out. When the cylinder returns to the end po-
sition, the device will not switch.
With the switch point teach, the switch point is shifted by the
hysteresis to the teach point. Depending on the signal direc-
tion, the teach point is outside the operating range.
u
Manually reduce the switch point by 2 times the hysteresis.
u
Use section teach instead of switch point teach.
Error after [Teach In Application]:
The application teach was carried out successfully, but only
one end position is recognised correctly. The parameters of
the other switching signal channel have not been changed.
Before the application teach, [TI Select] was not selected [All
SSC].
If the application teach is successful, only the switching signal
channel selected at [TI Select] will be configured with the
newly determined parameters.
u
Select [Parameter] > [Teach] > [Teach Single Value].
u
Select [Parameter] > [Teach] > [Teach Custom] > [TI
Select] and set [All SSC].
u
Execute the application teach again.
IO-Link event “block parameter setting error”:
The device does not accept the values for configuring a
switching signal channel.
The switch points [SP1] and/or [SP2] were set to the limits of
the measuring range. However, the switch points must be fur-
ther within the limits of the measuring range by at least the
value of the hysteresis.
u
Reduce hysteresis.
u
Shift the switch points further inwards.
u
Move the device in the groove so that the switch points will
be further in the middle of the measuring range.
IO-Link event "measuring signal disturbed”
Magnetic field too strong or too weak.
u
Ensure that the field strength is within the specified range.
w
Move sensor to valid area
1)
In the event of a short circuit at OUT2 (only for units with two outputs), the "short circuit" event will be provided via the IO-
Link interface.
