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Maintenance
D397-50-880 Issue C
5
Maintenance
5.1
Fault finding
In the event of a TIC or DX Pump Profibus module failing to respond check the following:
Table 17 - Fault finding guide
Symptom
Fault
Power LED not lit
No DC supply or internal regulator faulty.
Power LED lit but no power to DX pump.
DX version only.
The fuse may have blown. If this is suspected the
cable to the DX pump can be removed from the
Profibus module and a voltmeter used between pins 1
and 13 of the 15W D-type socket. 24V should be
output. Likely cause of the fuse to blow is a short-
circuit in the wiring to the DX pump. Check using a
DVM between all three +24V connections on the 15W D-
type free plug (pins 1, 6 & 11) and all three 0V
connections (pins 8, 13 & 14). Also check between
each pin and pump body. All must be high resistance.
Off-line not lit and Error LED flashing.
Address selection is above 125, correct the address and
re-power unit.
Off-line LED is lit and Error LED is lit.
Unsuitable parameterisation or configuration, check
extended diagnostics for module number.
Off-line LED is lit and Error LED is not lit. Check unit’s address matches that being used by the
master.
Power LED is lit and all other LED’s are
not lit.
Serial connection to TIC or DX disconnected or faulty or
TIC not powered on.
Data exchange LED is lit but data is not
changing.
Serial connection has become faulty after entering
data exchange. Check extended diagnostics for serial
comms lost indication.
Data exchange LED is lit but a
parameterised function is not behaving
as expected.
Unsuitable parameterisation detected during serial
comms transfer, check extended diagnostics for
module number.
Master is controlling an output on a TIC
but it sometimes changes state for
several seconds.
Has the output been parameterised with slaving
enabled? If yes, then manual override is only sensible
under certain conditions, at other times send the
’leave alone’ command value.
Master is controlling an output on a TIC
but the output is toggling on and off at
about a 10 second rate.
Known concern on TIC version D39700640D and earlier.
Upgrade to an appropriate version.
Work around:-
If only manual control required ensure that in the
slaving parameter the master object is set to none and
setpoint disabled.
If slaving only operation is required send the ’leave
alone’ command value at all times.
If slaving operation with occasional manual override is
required then send the on or off command for approx.
0.5 seconds then return to ’leave alone’.
Selected set-points will not function
See notes in Sections
. The TIC
Profibus module requires software that can accept 32-
bit numbers in the parameterisation field. If using
Hilscher Sycon software, the Profibus DLL of that
software suite must be either revision 2,7,5,0 or later.
