IKA RET control-visc Mode D'emploi page 33

Error messages and troubleshooting table
Fault Description
Er 2 In remote operation (PC) mode
with activated watchdog func-
tion in mode 1: no commu-
nication between PC and RET
control
Er 3 Device internal temperature
exceeds 80°C
Er 4 Difference between target and
actual speed exceeds 300 rpm
Er 5 No temperature increase in
sensor at continuous tempera-
ture difference (after approx.
3 mins)
Er 6 Interruption in safety circuit
Er 13 SAFE TEMP P adjustable safety
circuit defective
Er 14 Short circuit in temperature
sensor 1
Er 21 Fault during heating plate sa-
fety test
Er 22 Fault during heating plate sa-
fety test
Er 24 The temperature of the heating
plate exceeds SAFE TEMP H
(Hotplate)
Er 25 Heating switching element
monitoring
Er 26 Difference between internal
heating plate control and safe-
ty temperature sensor too large
Er 31 Defective monitoring of the
heating control circuit (TRIAC)
Er 41 Bar breakaway
Causes
• P C does not transmit any data
within the set watchdog time
• C onnection to PC interrupted
• H eat accumulation between
heating plate and housing
• P ermitted ambient temperature
exceeded
• M otor blocked or overloaded
• S ensor not in medium
• V olume of medium to be mea-
sured too large
• H eat conductivity of medium to
be measured too low
• H eat conductivity of the vessel is
too low
• I n the case of indirect heating,
the overall heat conductivity
resistance is too large
• D efective connection cable
• T arget/current different of the
adjustable safety circuit for mini-
mum temperature monitoring
• S hort circuit in temperature sen-
sor plug
• S hort circuit in the cable or tem-
perature sensor
• S afety relay does not open
• S _CHECK cannot generate
H_S_TEMP
• S AFE TEMP H (Probe) has been
set to lower than the current
temperature of the heating plate
• D isconnection of heating plate
control temperature sensor
• H eater control circuit switch
(TRIAC) short-circuited
• S afety relay has interrupted the
heating circuit
• H eater or the supply line is dis-
connected
• I nterruption in heating plate
safety temperature sensor
• I rregular temperature distribu-
tion across heating plate due to
sporadic heat dissipation
• D efective control or safety tem-
perature sensor
• T he bar has broken away four
times in a row without an explicit
change in the target value
Effect Solutions
Heating switched off • C hange watchdog time
Motor switched off • T ransmit data from PC within set
watchdog time (OUT_WDx@m)
• C heck cable and plug
Heating switched off • S witch device off, leave to cool
and switch on again
• C hange experiment
• O bserve maximum permissible
ambient temperature
Heating switched off • R educe load torque or use smaller
Motor switched off magnetic rods
• R educe target speed
Heating switched off • P lace the sensor in the medium
• R educe the volume of the media
• U se a carrier fluid with better heat
conductivity properties
• R eplace the glass vessel with a
metal pot
Heating switched off • R eplace cable
Heating switched off • A fter switching on, change the
SAFE TEMP to a different value; if
this solves the issue, the previous
value can be reset by switching
the device off and on again
Heating switched off • C heck the plug
• R eplace the temperature sensor
Heating switched off • S witch device off, leave to cool
and switch on again
Heating switched off • S witch device off, leave to cool
and switch on again
Heating switched off • L eave the heating plate to cool
• S et the SAFE TEMP H (Hotplate)
higher
Heating switched off • S witch device off, leave to cool
and switch on again
Heating switched off • S witch device off, leave to cool
and switch on again
• E nsure regular heat dissipation
when using metal blocks, etc.
on the flat surface of the heating
plate
Heating switched off • C ontact customer service
Target speed reduced • S elect a lower target speed
by at least 300 rpm • S elect a smaller stirring bar
Heating switched off
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