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ST535C Handbook

Page

17

All these error messages cause the ST535C to terminate the firing. The alarm buzzer

will sound once per second. To reset the ST535C turn off the power to the instrument

and have the fault investigated and rectified by your installer or kiln service engineer.

Technical note: these error messages will cause the alarm relay

to open.

Note: these error messages are provided to detect kiln faults

and so offer some protection to the kiln.

Program Error. This error message is displayed if

a potential error is detected within the firing pro-

gram when the ► key is pressed to start a firing.

The alarm buzzer will sound 3 times and the seg-

ment display will show the suspect segment number. To clear this error press the ►

key. The ST535C will now enter programming mode to allow the suspect program to be

viewed and altered if necessary. If a fault is found then correct it. If no fault is found

then press the ► key again to force the firing program to start. A potential program-

ming error is defined as a very low ramp rate to a very low temperature. Such a pro-

gramming fault might cause very long firing times with potential kiln damage.

Firing Program Errors

Internal data conversion circuit (ADC) error.

Maximum allowable differential temperature

between zones exceeded. The temperature of

zone 2 or zone 3 has varied from zone 1 by an

installer selectable limit.

ERROR:8

ERROR:9

ERROR:P

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Содержание ST535C

Страница 1: ...ST535C Handbook Page 1 Temperature Programmer Handbook Issue 6 002 Date 10 May 2021 www staffordinstruments co uk Copyright 2021 Stafford Instruments Ltd TAFFOR S D ST535C ...

Страница 2: ...nce ZONE 1 ICON ZONE 2 ICON ZONE 3 ICON START STOP KEY KILN HEATING INDICATOR FIRING INDICATOR CONTROL KEYS MIMIC DISPLAY MAIN DISPLAY SEGMENT DISPLAY RADIO ICON PAUSED INDICATOR MAINS SWITCH FUSE ST535C EVENT INDICATORS FUNCTION KEY ...

Страница 3: ...ter the programming mode To change firing data press the keys to change the displayed value Use the key again as necessary to step to the next firing value or segment to be reviewed or changed To mark the end of a program set a ramp rate to END with the key To exit the programming mode either wait 20 seconds or press the key to start firing If the keyboard is locked then press and hold down the fu...

Страница 4: ...5 Turning On 6 Programming 7 Temperature Display 9 Control Relays 9 Firing 12 Cooling 13 Operating Notes 14 Adjusting While Firing 15 Error Messages 16 Other Features 18 Sample Glass Programs 19 Sample Ceramics Programs 20 WiFi USB Datalogging Option 21 Installation 26 Characteristics 36 ...

Страница 5: ...tes from 0 1 to 999 hour FULL Ideal for glass or ceramics use Programs can be altered while firing Program pause and advance facilities Keyboard lockable Delayed start facility up to 99 hours 59 mins Power failure recovery Energy used display Setpoint display Alarm buzzer alarm relay output 2 Programmable control relay outputs WiFi USB datalogger option C F operation Features ...

Страница 6: ...show the kiln temperature All other lamps except the zone indicator lamp for multi zone kilns should be off If pressing any key causes LOCKED to appear then the keyboard has been locked This is an anti tamper feature Press the function key hold down for 5 seconds to unlock During firing the star icon will light to show when heating power is being applied to the kiln This now shows that the keyboar...

Страница 7: ...next segment until the end of the pro gram is reached The ST535C is capable of both positive heating ramps and negative cooling ramps as used in glassmaking for annealing The type of ramp is clearly shown on the mimic display during firing The ramp rate is settable in the range 0 1 to 9 9 hour then 10 to 999 hour or FULL full power or END end of program The soak target temperature is settable over...

Страница 8: ... can be altered in the range 00 00 to 99 59 with the keys The soak period indicator on the mimic panel will flash The next push of the key increments the segment number digit and firing data for the next segment can be entered Program data entry is terminated if END is selected for a ramp rate with the key Pro gram data entry is also automatically terminat ed if the maximum number of segments have...

Страница 9: ...is on The ST535C has 2 control relay outputs Control relay 1 can be configured as an event output a damper control output or a fan control output Control relay 2 can be configured as an event output only See the Installation section for details about configuring the control relays While displaying a soak period the event output can be switched on or off by holding in the function key then pressing...

Страница 10: ...per open temperature prompt is now shown Press the key The damper open temperature is now shown Adjust with the keys hold down for acceleration Press the key The instrument will now reset and the new damper control temperatures will be stored Note in the sequence above it is important that the key is pressed a total of 4 times else changes will not be saved Damper Output Damper Operation Prior to ...

Страница 11: ...top temperature prompt is now shown Press the key The fan stop temperature is now shown Adjust with the keys hold down for acceleration Press the key The instrument will now reset and the new fan control temperatures will be stored Note in the sequence above it is important that the key is pressed a total of 4 times else changes will not be saved Fan Output Fan Operation Prior to firing the fan wi...

Страница 12: ...rature then the ST535C will apply heating power to the kiln for 12 seconds every 30 seconds The kiln heating indicator will light for 12 seconds every 30 seconds If the kiln has a contactor then a loud click will be heard both when the kiln heating indicator lights up and when it goes out If full heating power is required then the kiln heating indicator will remain lit If full cooling is required ...

Страница 13: ... temperature is above 40 C the display alternates every 5 sec onds between the kiln temperature and HOT When the kiln has cooled to less than 40 C the display alternates every 5 seconds between the kiln temperature and END To return the ST535C back to idle condition ready for the next firing press the key or turn off the power to the instrument 120oC HOT 38oC END ...

Страница 14: ... the key again will cause the ST535C to restart the firing from the beginning The ST535C will look at the current kiln tempera ture and if this is greater than the required soak temperature then the ST535C will automatically cool from current temperature to the soak temper ature This may not be what is desired so the key should only be used to halt the firing in an emergency The program can be pau...

Страница 15: ...l return to its normal running display 20 seconds after key presses cease or immediately after END is displayed Changes made to programs in this way are stored and are used for subsequent firings Program Advance Facility While firing press and hold down the function key then press the key to obtain the advance function The ST535C will sound a short beep and the execut ing program will immediately ...

Страница 16: ...an installation fault Get wiring checked Cooling error The kiln has been on zero power for 30 minutes but the kiln temperature has not fallen by at least 1 C Possible causes contactor failure contacts welded or thermocouple connection intermittent or high resistance Kiln temperature overshoot The kiln tempera ture exceeds the desired temperature by a pre set limit Maximum firing time exceeded The ...

Страница 17: ... firing The alarm buzzer will sound 3 times and the seg ment display will show the suspect segment number To clear this error press the key The ST535C will now enter programming mode to allow the suspect program to be viewed and altered if necessary If a fault is found then correct it If no fault is found then press the key again to force the firing program to start A potential program ming error ...

Страница 18: ... an anti tamper feature used to ensure that the operation of the ST535C or the program data cannot be altered by un authorised people The ST535C can be locked when it is idle not firing or while it is firing It cannot be locked while it is being programmed Power Failure Recovery If power fails during firing then the ST535C recovers as follows For power failure during start delay the ST535C times o...

Страница 19: ...38 00 15 182 427 00 00 END 3 6mm Bullseye Fuse 222 677 00 30 333 795 00 10 FULL 482 01 00 83 371 00 01 END 4 6mm Bullseye Slump 167 640 00 10 FULL 482 01 00 56 371 00 01 END 5 6mm Spectrum System 96 Fuse 200 500 00 00 FULL 804 00 12 FULL 540 00 40 150 510 00 20 END 6 6mm Spectrum System 96 Slump 155 704 00 20 FULL 540 01 30 FULL 510 00 10 26 371 00 00 END 7 Bottle Firing Cycle 170 510 00 00 250 78...

Страница 20: ...Lustre 750 C 100 400 FULL 750 00 00 00 00 END Note It has been found that a kiln controller will give greater heat work as the temperature increases Therefore to achieve a stoneware firing of cone 8 9 we suggest setting the final soak temperature to 1235 C A slight adjustment can then be made after the first firing It should be remembered that kiln controllers are indicators of temperature and the...

Страница 21: ...green Drive Mounted LED are mounted on the top panel of the controller A dust plug is provided for when a USB drive is not fitted FLASH Memory Drive Specification These can be either USB1 USB2 or USB3 drives USB3 drives have a blue insulator The drives must be formatted as FAT32 or FAT16 not NTFS or ExFAT The module has been tested with several makes of drive up to size 256Gbytes If the green LED ...

Страница 22: ...the firing is complete and when the kiln has cooled to 100 C A file LOGnnn CSV is created on the FLASH drive The first file to be created will be LOG000 CSV Subsequent firings will generate LOG001 CSV up to LOG999 CSV Only 1000 log files are allowed It is best to move the LOG files to another storage disk after just a few firings because it takes about 1 second to index each existing file on disk ...

Страница 23: ...t Temp Program Segment Event 1 Event 2 Status 2021 2 11 17 44 47 22 9 24 9 22 9 24 9 22 9 24 9 22 9 1 1 0 0 HEATING RAMP 2021 2 11 17 45 47 22 9 26 9 22 9 26 9 22 9 26 9 23 1 1 0 0 HEATING RAMP 2021 2 11 17 46 47 23 8 28 9 23 8 28 9 23 8 28 9 23 1 1 1 0 0 HEATING RAMP 2021 2 11 17 47 47 25 1 30 9 25 1 30 9 25 1 30 9 23 1 1 1 0 0 HEATING RAMP 2021 2 11 17 48 47 26 9 32 9 26 9 32 9 26 9 32 9 23 1 1 ...

Страница 24: ...is not powered Then apply power to the con troller This file changes the controller configuration using the following file format one item per line Configuration Parameter Number Configuration Parameter Value So for example to change the controller settings for a datalogger sample interval of 60 seconds with K type thermocouple with a maximum user temperature of 1050 C and with a kiln power rating...

Страница 25: ... 0 0 0 Notes 1 Out of range values will not be stored 2 Ramp rates are stored with a resolution of 0 1 C hour so for a ramp rate of 50 C hour enter 500 and for a ramp rate of say 9 7 C hour enter 97 3 Full power is specified by a ramp rate of 10000 4 Program end is specified by a ramp rate of 0 5 The last line of the program should have 0 0 0 0 as shown above to mark the end of the program 6 The e...

Страница 26: ... Fuse 3 15A Anti surge 20mm ceramic HRC IP50 To meet Electromagnetic Compatibility requirements the controller lead should not exceed 3 0m in length This instrument is designed for use mainly in Domestic Commercial Light Industrial environments where electromagnetic interference may cause a loss of accuracy of the displayed temperature reading of up to 3 C Specified accuracy will be restored when ...

Страница 27: ...nt can be removed from this bracket for in hand programming if required Spare wall brackets are available from Stafford Instruments Ltd our part number X00210 The coil of each kiln contactor should be suppressed with an RC suppressor RC suppressors must be connected directly across the coil terminals on each contactor Suitable proprietary RC suppressors are often available from contactor manufactu...

Страница 28: ...OLLER ORANGE WHITE BROWN BLUE WHITE BLACK YELLOW BLACK BLACK ORANGE BLACK ORANGE WHITE ORANGE WHITE Thermocouple Z2 ve Thermocouple Z2 ve Thermocouple Z3 ve Thermocouple Z3 ve Heating Control Output L Z2 Heating Control Output L Z3 Event 2 Control Output L K4 K5 K6 YELLOW GREY PINK CPC19 B4 C4 A4 A5 A1 B1 A2 B2 C2 A3 B3 C3 C1 GREEN YELLOW 1 2 3 4 5 6 8 9 13 14 7 10 12 15 16 11 1 2 3 4 5 6 14 7 10 ...

Страница 29: ...damage either to the kiln or the controller 4 12 8 3 7 11 14 1 CPC14 plug View on pins 7 6 2 1 5 3 4 8 9 10 11 12 Han12Q plug View on pins Connecting Leads Han15DX plug View on pins 1 2 3 4 5 A B C Zone 1 is the main control zone and it is normal to allocate this zone to the bottom of a multi zone kiln Zone 2 is a slave zone and should be allocated to the middle zone of a 3 zone kiln or the top zo...

Страница 30: ...If an error message is generated the firing is terminated the alarm buzzer sounds and the alarm output contact opens This output is usually used to drive a secondary policeman contactor to isolate power to the kiln elements Error messages are provided to detect kiln faults and so offer some protection to the kiln For increased protection the use of a heat fuse or other independent over temperature...

Страница 31: ...ed 10 Set point offset zone 1 99 99 0 C 11 Proportional band zone 1 1 999 55 C 12 Integral time zone 1 0 9999 200 Seconds 0 disabled 13 Differential time zone 1 0 999 10 Seconds 0 disabled 14 Kiln element power zone 1 0 9999 0 1 unit 0 1kW 19 Error 9 differential temperature trip 0 99 0 C 0 disabled 20 Set point offset zone 2 99 99 0 C 21 Proportional band zone 2 1 999 5 C 22 Integral time zone 2 ...

Страница 32: ... Damper Fan relay function 0 3 0 0 disabled 1 event 2 damper 3 fan 46 Remember start delay 0 1 0 0 forget 1 remember 47 Skip start delay after power failure 0 1 0 0 resume delay 1 skip delay 48 Reset to factory defaults 0 1 0 1 reset 49 Event2 Forced cooling relay function 0 2 0 0 disabled 1 event2 2 forced cooling 50 USB Datalogging sample rate 5 300 60 seconds 51 USB Datalogging string format 0 ...

Страница 33: ...rategy all the zones follow the same user programmed set point Differential control strategy is also available With this strategy the setpoint for zone 1 is as defined by the user program but the setpoint for zones 2 3 is the currently achieved actual temperature of zone 1 This strategy ensures that zones 2 3 are always able to follow zone 1 the slowest zone Control strategy is ignored for single ...

Страница 34: ...Page ST535C Handbook 34 Notes ...

Страница 35: ...ST535C Handbook Page 35 Notes ...

Страница 36: ...al ABS flame retardant UL 94V 0 Sealing IP51 Size 100 86mm W 210mm L 32mm D Colour Black Dark Grey RAL9011 RAL7012 Error Handling Thermocouple failure detection Thermocouple reversal detection Heater failure detection Kiln over temperature detection Room over temperature detection Lock up on error facility Firing run time hours limiter User program check Alarm buzzer Keyboard lock facility indicat...

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