Subject to changes | © 2020 SOLARWATT GmbH | AZ-TM-PME-1755 | Rev 000.2 | Version: 08/2020
Page 50
AC-Sensor technical problems
Error
Possible cause
Fault indication
Troubleshooting
direct measurement
Troubleshooting CT clamp
measurement
No Mea-
surement
data
No
Power supply
no LED lights
up
Make sure voltage is supplied to
terminal L1
Make sure that voltage is sup
-
plied to terminal L1
CAN bus not
connected/not
connected cor-
rectly
CAN-LED does
not light up
green
Check connection and wiring of
CAN bus
Check connection and wiring of
CAN bus
Error
Status LED
flashes 5x/sec
Restart the ACS:
•
switch off the phase that is
connected to L1
•
switch on again after 3s
Restart the ACS:
•
switch off the phase that is
connected to L1
•
switch on again after 3s
Unusual
measure-
ments
Incorrect
installation
Feed-In LED in-
dicates wrong
status
Check the assignment of L1, L2
and L3
Check Grid-side and House-side
Check the assignment of L1, L2
and L3 on the CT clamps
Two or more
phase conduc-
tors interposed
Feed-In LED in-
dicates wrong
status
Check the assignment of L1, L2
and L3
Check the assignment of L1, L2
and L3 on the CT clamps
Check the direction of the cur
-
rent flow of the CT clamps
The secondary
winding of one
or more current
transformer
clamps is con-
nected in a
wrong direction
Feed-In LED in-
dicates wrong
status
Check the direction of the cur
-
rent flow of the CT clamps and
the connection of the second-
ary winding
If you are experiencing technical problems with the AC
Sensor, please use the SOLARWATT service hotline. We
will need the following information to assist you further:
•
Type and serial number of the AC Sensor (see type plate)
• Type and serial number of the device receiving the
measurements from the AC Sensor on the CAN bus.
•
Provide as much detail as possible when describing the
error
