ABB C1900 Series - Troubleshooting and Fault Finding; Common Symptoms and Solutions

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Symptom Possible Cause Action
Does not power up a) Internal fuse (if fitted) is blown a) Check wiring, rectify fault and replace fuse
b) Internal power switch (if fitted) is OFF b) Turn power switch ON
c) Power supply connections are incorrect c) Check connections
Chart does not appear to move a) Very slow chart speed selected a) Select required chart speed in
Set Up
Chart Page
b) Chart stop function enabled b) De-activate source being used to stop
chart – see
Set Up Chart Page
Pens in recording position but do not drop Chart stop function enabled De-activate source used to stop chart – see
onto paper
Set Up Chart Page
Red pen does not move beyond 94% When real time event pen is fitted the red pen Use chart range which prevents the need to go
position on chart cannot go beyond 94% to prevent pens beyond 94% of maximum on chart
clashing
Pen lift switch on front panel does not Pen lift switch is disabled Enable pen-lift switch in Set Up Chart Page
work
Pens do not remain lifted when pen lift key Auto pen drop feature is enabled Disable auto pen drop in
Set Up Chart Page if
is used this is not required
Analog inputs are slow to respond A large filter time has is set Set digital filter value to give required response
in Set Up Inputs
Time or date incorrect Not set for correct local time Set correct time and date in Set Up Clock
Page
– refer to Advanced Software Manual
Totalizers cannot be set to STOP or GO Operator STOP/GO selection is not enabled Enable counter STOP/GO in the Set Up
in the OPERATOR LEVEL Totals Page
Totalizer cannot be set to STOP Digital signal assigned to the total STOP/GO De-activate digital signal assigned to total
function is active STOP/GO function
External relays connected to relays in Arc suppression capacitors are provided Remove the arc suppression components –
instrument fail to de-energize across the relay contacts and capacitor IC4 and IC5 on mainboard
leakage current may be sufficient to prevent IC6 and IC7 on standard I/O and analog relay
an external relay from de-energizing IC3 to IC10 on 4 relay module
Pens return to a different position after a Pens are interfering with one another due to Each pen requires the force of 1 gram to lift it
pen-lift or power down incorrect setting of pens off the paper. Carefully bend arm (up or down)
close to the plastic moulding to give correct
setting
7 SIMPLE FAULT FINDING