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20

Explanation of the parameters

(see # in brackets for parameter number)

power rating (1)
Power rating of the kiln. This value is only used for calculating the power consumption.

thermocouple code (3)
Type of thermocouple:  S=PtRh10%-Pt, R=PtRh13%-Pt, K=NiCr-Ni, J=FeCu-Ni. Change from S/R to
J/K and vice versa are locked for safety and technical reasons.

maximum temperature of the kiln (4)
maximum adjustable temperature. Please make sure that this limit never exceeds the maximum
temperature allowed for the kiln !

proportional band (5),  integral time (6),  derivative time (7)
These so called control parameters adapt the controller to the heating characteristics of the kiln.
The default parameters ensure excellent results since they are continuously adapted by the
permanent auto tune feature of the controller. 

cycle time (8)
Determines the number of switching cycles of the contactor. Frequent switching reduces lifetime
of the controller. On the other hand long switching cycles cause unsteady heating of the kiln. The
default value of 30 seconds has been found a good compromise for almost all applications.

reaction on problems heating up the kiln (9)

setting 0 the controller entirely reacts on all delays on heating up in ramps. The time counter in
controlled ramps is held („hold“) if one zone gets up to full power. This setting ensures that even
on multizone kilns if there is a lack of power the temperature in all zones is equalized as best as
possible. With this setting the actual time required for a ramp might be much longer than
programmed because the controller enters „hold“ cycles frequently.
setting 1 (default) as setting 0 but time is only stopped if all zones are on full power. This ensure
that during a heat up ramp the kiln power of all zones is used although the temperature in some
zones is not totally equalized. On single zone kilns setting 0 and 1 come to the same result !
setting 2 the controller only checks the increase in temperature on full power heating. As long as
a certain increase in temperature is found (min 3°C per 15 minutes) the firing is continued.
setting 3 the controller does not check for any heating of the kiln. This setting should only be
used if required by the application (e.g. if the kiln must be opened frequently during the firing)
because operation safety gets lost. On this setting for instance a short circuit on the thermocouple
can not be found by the controller and would cause the kiln to overfire.

Summary of Contents for TC 505

Page 1: ...9 3 0 start stop event 1 event 2 hold shift select t2 t1 t0 prog memo 1050 C 1180 C 1250 C 150 C 800 C 900 C rmp3 rmp1 rmp2 tmp2 tmp1 C h h min C F h F Z3 Z 1 Z2 T H E R M O C O M P U T E R TC 505 Op...

Page 2: ...ator controller keypad locked 3 read change final firing temperature 4 read change 1st dwell temperature 5 read change programme delay 6 read change 1st heat up ramp 7 read change 1st dwell time 8 cal...

Page 3: ...not exposed to direct heat or radiation from the kiln 3 General Information 3 Calling up a Programme 5 Starting a Firing 5 Displays during a Firing 6 Entering and Checking a Firing Curve 7 The Value S...

Page 4: ...e c After reaching the temperature the kiln remains for set time The time is entered as hours minutes heating up to 2nd dwell d The kiln heats up at the set rate to the firing temperature The example...

Page 5: ...the firing From now on the current segment of the firing lights up in the firing curve 15 Display 14 reads the current setpoint display 12 the temperature inside the kiln 5 Calling up a Programme C h...

Page 6: ...he time is less than 1 hour the indication is in minutes seconds unit display 13 h min is blinking After 15 seconds or when pressing key 10 followed by key 20 again the the display 14 switches back to...

Page 7: ...s up To change this value proceed as described before All values of the firing curve can be checked and if required changed as described The sequence of checking or changing is free Only keep in mind...

Page 8: ...the controller The first 6 programmes are factory set and cannot be changed This ensures that you always have a set of 6 standard firing curves available The values of these programme number 1 to 6 we...

Page 9: ...oles check color codes A wiring switched at both ends can NOT be determined by the controller and will cause overfiring invalid signal acquisition bad error on determining cold junction temperature or...

Page 10: ...lements The TC505 adds up the net operation times of the heating elements ie only the duration where they were actually under power since programme start This allows you to check the load of the kiln...

Page 11: ...p tem perature the time is adjusted accordingly Example Ramp in 2 hours up to 500 C If the kiln is already at 250 C the time is set to 1 hour only This also ensures that the setpoint starts at the kil...

Page 12: ...controlled ramp by holding the time In a dwell the time is also held infinitely Your TC505 provides you with the option of entering the heating and cooling ramps as time hours minutes rather then degr...

Page 13: ...actor stucks in the ON position for instance Possible causes for over temperature kiln contactor stuck in ON position a contact of the contactor has melted together Certain errors like power breakdown...

Page 14: ...as been continued automatically If the temperature increase does not follow the programme the ramp is held on see section Kiln can not follow the Ramp If the controllers finds the kiln unable to catch...

Page 15: ...s switch you can disregard It just means that the controller has been turned off last time when the firing had not been totally completed Simply continue working by entering a programme internal probl...

Page 16: ...values only if certain errors happen for instance all errors decribed in Appendix A The last 50 errors are recorded including all details temperatures etc like in the data log This allows quick and ef...

Page 17: ...ample display on the left hand side To indicate log display other than normal operation display a programme run is shown as a continuously and not blinking decimal point in display 12 To call up the f...

Page 18: ...solutely identical as described before for the data log The error log records in seqence all previous errors The log can only be purged by the manufacturer and is very efficient and essential to track...

Page 19: ...t the parameters Some adjustments are blocked for safety reasons e g changing the type of thermocouple from S R to J K or vice versa Warning Appendix C Configuration par no description default unit 1...

Page 20: ...ting up the kiln 9 setting 0 the controller entirely reacts on all delays on heating up in ramps The time counter in controlled ramps is held hold if one zone gets up to full power This setting ensure...

Page 21: ...e function of these additional control outputs can be set to one of the following options each 0 control output OFF no function 1 output for safety contactor ON during programme run OFF if overtempera...

Page 22: ...simple and compact to make changes understandable Parameter changes allow the adaption of the TC505 to almost all applications However many functions of the TC505 are hidden using this parameter list...

Page 23: ...e last job must be set to end The last switching job must be set to end press key 11 followed by digit key 3 Now press key 17 to select the day of week Further to the normal weekday selections monday...

Page 24: ...up DDE fieldbus driver software required state of the art software bentrup WinControl for visualization data acquisition and recording managing firing programmes and configuration A detailed descripti...

Page 25: ...in no function HAN7Da HAN15Da CPC14a a additional control output 7 C3 12 b control output live 6 A3 14 c control output neutral 1 B3 13 d earth ground earth clamp 11 e mains supply live 5 A1 8 f mains...

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