MR TAPCON - Incorrect Measured Values

10 Fault elimination
Maschinenfabrik Reinhausen GmbH 2020276 3587317/21 ENTAPCON
®
Characteristics/details Cause Remedy
Connection cannot be established
with visualization
Connection cable defective Check connection cable
SSL encryption active Accept SSL certificate in browser
Call up IP address using https://
Deactivate SSL encryption
When establishing connection via
front panel: Automatic sourcing of
IP address of PC (DHCP) is not
active
Activate automatic sourcing of IP address
(DHCP) on the PC
When establishing connection via
the CPUI interface: IP addresses
of visualization and SCADA are in
the same subnet
Check setting of device's IP addresses and cor-
rect if necessary.
When establishing connection via
the CPUI interface: PC not in the
same subnet as visualization
Check setting of IP addresses of device and PC
and correct if necessary.
Incorrect display of visualization
in web browser.
Access to visualization using web
browser after a software update.
Delete web browser's cache.
Table121: Human-machine interface
10.5 Incorrect measured values
Characteristics/details Cause Remedy
Measured voltage
▪ No measured value available.
Connection has no contact in the
plug terminal.
Check wiring and plug terminal.
Insulation trapped
Wire not inserted far enough.
Miniature circuit breaker tripped. Check fuse.
Assembly UI1 or UI3 defective
▪ RDY LED does not light up
▪ RDY LED flashes
Contact Maschinenfabrik Reinhausen GmbH.
Measured voltage
▪ Measured value too low.
Voltage drop on measuring line. Check measured voltage.
Measured voltage
▪ Measured value fluctuates.
Possible sources of interference:
▪ Cables laid in parallel.
▪ Tap-change operations.
Check measured voltage.
Increase distance from source of interference.
Install filter if necessary.