STW164IP
12660-0710-00
Page
27 / 30
www.ziehl.de
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Toubleshooting and Measures
Display / website reports:
Error on BUS
>
On display page 2 (3), the measured value of no longer reachable STW161M/STW168M is red
>
The red LED flashes on the corresponding STW161M/STW168M (yellow LEDs Tx and Rx off)
Cause
•
RS485 bus line interrupted
•
A device connected to the BUS cannot be reached
Remedy
•
Check bus line
•
Check STW168M and STW161M connected to the BUS
>
LEDs Rx and Tx must flash briefly all the time (display RS485 communication)
>
Check 24V supply (green LED "Power" must light up)
>
Check BUS address on STW168M and STW161M. Addresses also enabled on
STW168M
>
Red error LED must not flash (no communication with this device)
Display / website reports:
Volume flow
Cause
The programmed maximum volume flow has been exceeded. Too many sliders/flaps
are open.
Remedy
If necessary, switch off individual machines
Display / website reports:
End position error
>
On display page 2 (3), the measured value of STW161M with end position error is highlighted in red
>
The red LED lights up on the corresponding STW161M
Cause
The contact Y4 on a STW161M does not close or closes too late
Remedy
•
Check the end position contact on the corresponding STW161M
•
If necessary, adjust parameters [machine/end position Y4] (extend time)
Display / website reports:
STW16xM: 24V >><<
>
On display page 2 (3), the measured value of the STW161M/STW168M is highlighted in red
>
The red LED flashes on the corresponding STW161M/STW168M
Cause
The supply voltage on a STW161M/STW168M is too high or too low
Remedy
Check the supply voltage on the STW161M/STW168M.
If the voltage is too low, this can be remedied with an additional power supply unit in the BUS
line (see connection diagram)
Display / website reports:
STW164IP: 24V
>><<
Cause
The supply voltage on the STW164IP is too high or too low
Remedy
Check supply voltage on STW164IP.
If the voltage is too low, this can be remedied with an additional power supply unit in the BUS
line (see connection diagram)
Display / website reports:
Int Memory Error
■
/
Device Error
/
Display Error
r
Cause
Internal error in the device
Remedy
Switch the device off and on again. If the fault persists, the device must be returned to the factory
for repair.
Display / website reports:
Parameter error
Cause
Incorrect parameter value (out of range)
Remedy
Check parameters, perform factory reset
Display / website reports:
P error priority
Cause
The priority of the sliders contains multiple entries
Remedy
Check priority of the sliders (parameters) -> each priority may only be assigned once
