28
NT935BH
TROUBLESHOOTING
CAUSES AND SOLUTIONS
The control unit does not switch on and the
supply to terminals 40-42 is correct.
Check that: the connector is firmly inserted in its place, the
connection wires are tight and that there are no obvious signs of
burns on the connectors. Turn off the power supply and carry out
the above instructions, restore the voltage.
CH4 is in FAULT for FOC
(only the 3 Pt100 sensors are connected)
Programming error of the CH4/YES control unit.
Check and repeat
the programming on page 13-14 select CH4 /NO.
One of the three/four channels is in FAULT for
FOC/FCC
Check the Pt100 probe connections, check the indications given in
the paragraphs:
transfer of measurement signals and temperature
probe diagnostics on page 15-16.
When turned on, the indication "ECH" appears
A strong disturbance has damaged the memory data. See the
paragraph for programmed data diagnostics on page 15.
All the Pt100 sensors are in FCC.
Incorrect sensor connection, the terminal block has been inserted
upside down.
Check the connections and the terminal board.
The temperature shown by one or more
channels is wrong.
Contact the
TECSYSTEM
Technical Department.
Sudden trip of the main switch. The temperature
is on standard levels. Just one channel has
caused the trip.
Check the temperatures recorded in T-MAX, check the indications
given in the paragraphs:
transfer of measurement signals and
temperature probe diagnostics pag.15. Activate the FCD function.
FCD warning
See the FCD function on page 27.
The control unit signals BH ERR RS1
Check the connection between the control unit and the Control box
BAR B1, TRBH SYSTEM manual.
The control unit signals BH ERR RS2
Check the connection between the Control box BAR B1 and the
Control box B2, TRBH SYSTEM manual.
The control unit signals BH ERR B1
Check the operating status and the connection of the motors
installed on the B1 bar, TRBH SYSTEM manual.
The control unit signals BH ERR B2
Check the operating status and connection of the motors installed
on the B2 bar, TRBH SYSTEM manual.
The control unit signals BH ERR B1-2
Check the operating status and connection of the motors installed
on the B1-2 bars, TRBH SYSTEM manual.
Contact the
TECSYSTEM
Technical Department if the problem persists.
