Spirax Sarco BC3250 Installation And Maintenance Instructions Manual Download Page 66

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IM-P403-89

EMM Issue 8

TDS - SP (Set Point)

Ranges

0 – FSD

Default

50% FSD

Resolution (steps)

0.1% FSD

Units

µS / cm or ppm

TDS - HYST (Set Point hysteresis)

Ranges

0 – SP

Default

5% FSD

Resolution (steps)

0.1% FSD

Units

µS / cm or ppm

TDS - CAL (Actual water TDS or conductivity to calibrate product)

Ranges

0 – FSD

Default

4000

Resolution (steps)

0.1% FSD

Units

µS / cm or ppm

TDS - CAL INT (Calibration Interval – reminder to recalibrate product)

Ranges

0 – 26

Default

0 (0 = off)

Resolution (steps)

Units

Weeks

Summary of Contents for BC3250

Page 1: ...om the run mode by pressing and holding down the OK button for 5 seconds The bar graphs will disappear and the display will show PASS CODE with 8888 at the bottom right corner of the screen The flashi...

Page 2: ...if used within approximately 1 metre 39 of the product or its wiring The actual separation distance necessary will vary according to the surroundings of the installation and the power of the transmitt...

Page 3: ...nction correctly Not used to provide electrical safety Clean earth ground Safety earth Caution risk of electric shock Caution risk of danger refer to accompanying documentation Optically isolated curr...

Page 4: ...g gear if required 1 3 Lighting Ensure adequate lighting particularly where detailed or intricate work is required 1 4 Hazardous liquids or gases in the pipeline Consider what is in the pipeline or wh...

Page 5: ...to assess the risks taking into account the task the individual the load and the working environment and use the appropriate handling method depending on the circumstances of the work being done 1 13...

Page 6: ...r form other than as expressly granted here without the prior written consent of Spirax Sarco Limited 2 1 General description The BC3250 is a blowdown controller for steam boilers It controls TDS tota...

Page 7: ...The OK button is used to clear errors or alarms OK BC3250 100 50 0 SP PV AL Fig 1 Front panel keypad and definitions Graphic display Clears any errors or alarms Press and hold for 5 seconds 2 2 Front...

Page 8: ...t digit is blanked off or always reads zero Information line displays the various control states and process units Three bar graphs which shows a percentage of full scale PV Process Variable the highe...

Page 9: ...sis AL Fig 5 Graphics display definition trend graph 100 50 0 M Information line Examples Units ALARM STATE PV value 8 minutes or hours or day Percentage scale Timescale designator M Minutes H Hours D...

Page 10: ...w ALARM will be shown first followed by the type of alarm See Section 9 Fault finding for types of errors Example of alarm status 7000 PPM 7000 ALARM 7000 HIGH TDS If a bottom or TDS blowdown occurs B...

Page 11: ...rded times See commissioning TIMER MODE OFF menu BB BLDN a timed bottom blowdown is occurring i e the valve is open TDS blowdown valve Conductivity Total Dissolved Solids BLOWDOWN Indicates either the...

Page 12: ...lashing AL and S cm or ppm 300 AL HYST Shows the alarm hysteresis chosen by the user A damping effect for turbulent conditions Normally 3 of alarm figure 0 50 PROBE F Shows probe factor an indication...

Page 13: ...timer duration 0 29 TIMER S Timer duration now Shows elapsed duration time in seconds Timer duration now is shown only if timer duration 0 11 TIMER Timer interval now Shows elapsed interval time in ho...

Page 14: ...e damage should be recorded immediately on the carrier s copy of the delivery slip Each carton should be unpacked carefully and its contents checked for damage If it is found that some items have been...

Page 15: ...ise cause over frequent switching of the blowdown or dump valve This could be caused for example by boiler firing rate variations by the feedpump operating or by sudden changes in boiler load If the w...

Page 16: ...mulative boiler firing time Fig 7 Output with purge time set 0s 3 3 Outputs 3 3 1 Continuous output Used when the probe is mounted in the boiler The probe is able to constantly monitor the conductivit...

Page 17: ...ures A test function provides the operator with a diagnostic facility Inputs can be measured and outputs can be set from the front panel The controller also displays the approximate probe factor direc...

Page 18: ...IM P403 89 EMM Issue 8 18 3 5 Typical applications Boiler control systems BCS Fig 9 BCS1 system smaller boiler Fig 10 BCS2 system coil boiler OK BC3250 100 50 0 SP PV AL OK BC3250 100 50 0 SP PV AL...

Page 19: ...L Fig 11 BCS3 system TDS control with integral take off and continuous monitoring point from the side of the boiler OK BC3250 100 50 0 SP PV AL Fig 12 BCS4 system TDS control with intermittent monitor...

Page 20: ...turn and will redirect the flow to drain if the conductivity increases above a pre set level to avoid contaminated water being returned to the boiler feedtank It will not detect contaminants that do n...

Page 21: ...ning The boiler control panel or enclosure doors must be kept closed at all times unless installation or maintenance work is being carried out Do not attempt to open the product it is sealed and has n...

Page 22: ...tout Minimum panel thickness 1 mm if the bezel is used The product has integral threaded inserts M4 x 0 7 at the top and bottom of the front panel Two M4 x 25 mm screws are provided together with fibr...

Page 23: ...IM P403 89 EMM Issue 8 23 4 2 mm 10 mm 22 mm Fig 15 Chassis plate panel cutout diagram 112 mm 67 mm 10 mm 45 mm 92 mm 22 5 mm 4 2 mm 15 mm 4 2 mm 4 2 mm 120 mm 8 mm 112 mm 120 mm...

Page 24: ...at 3 amps must be included in all phase conductors of the installation wiring If overcurrent protection is included in both supply wires then the operation of one must also cause the operation of the...

Page 25: ...live and neutral wire together If one wire becomes loose the other wire will prevent it from touching accessible parts 13 A disconnecting device switch or circuit breaker must be included in the buil...

Page 26: ...ltages All other components connectors conductors 5 The wiring diagrams show relays and switches in the Power Off position 6 Where the probe is fitted in the blowdown line and a purge is required 10 6...

Page 27: ...N Fig 18 BCV30 230 115 Vac blowdownvalve Caution live terminal AC supply Burner supply Fig 19 BCV1 BCV20 or BCV31 solenoid valves See Section 5 2 Mains wiring notes Link Link BCV30 230 115 Vac Blowdo...

Page 28: ...ixed between Vac and Vdc 1 2 3 4 5 6 7 8 9 10 11 Alarm 1 relay Control relay 3 A Fuse L 1 A Fuse N Alarm Norm Input 3 A Fuse BACK FRONT Open Input 3 A Fuse Caution live terminal AC supply Burner suppl...

Page 29: ...nds 1 2 3 4 5 6 7 8 9 10 11 Alarm 1 relay Control relay 3 A Fuse L 1 A Fuse N Alarm Norm Input 3 A Fuse BACK FRONT Open Input 3 A Fuse Caution live terminal AC supply Burner supply BCV4x 6x 7x 8x Opti...

Page 30: ...ixed between Vac and Vdc 1 2 3 4 5 6 7 8 9 10 11 Alarm 1 relay Control relay 3 A Fuse L 1 A Fuse N Alarm Norm Input 3 A Fuse BACK FRONT Open Input 3 A Fuse Caution live terminal AC supply Burner suppl...

Page 31: ...nds 1 2 3 4 5 6 7 8 9 10 11 Alarm 1 relay Control relay 3 A Fuse L 1 A Fuse N Alarm Norm Input 3 A Fuse BACK FRONT Open Input 3 A Fuse Caution live terminal AC supply Burner supply BCV4x 6x 7x 8x Opti...

Page 32: ...RS485 Modbus wiring notes SCN E 5 4 Signal wiring notes See Section 10 Technical Information for terminal and cable specification An earth current loop is created if a wire or screen is connected betw...

Page 33: ...socket is provided with a NPT conduit adaptor for this purpose See the Information and Maintenance Instructions for the CP30 for further details 5 8 Probe in boiler CP32 The probe requires 8 way scree...

Page 34: ...i e Tx from the product slave is to be connected to the Rx of the master Twisted pair cable should not be required for short lengths of cable 1 5 m 5 ft Standard screened cable should suffice The H D...

Page 35: ...ly to protective ground earth at one point only Generally this point is at or near the master device Consider terminating the two furthest ends of the bus to match the transmission line impedance A 15...

Page 36: ...mode and an error will occur If the calibration was incomplete the controller may not provide the correct control The product has no battery The programmed settings are held in non volatile memory Fla...

Page 37: ...displayed at the top of the screen and the new sub menu will appear on the next line As you progress through the menu the longer the list becomes This aids navigation of the menu structure MODE INPUT...

Page 38: ...nal Local regulations and Guidance notes and the boiler manufacturer s recommendations It is imperative that the settings you have accepted will allow the boiler to operate in a safe manner This proce...

Page 39: ...d See DATA sub menu Configures the input type and commissioning parameters See INPUT sub menu Configures the outputs See OUTPUT sub menu Allows the user to set bottom blowdown time See TIMER sub menu...

Page 40: ...n exit the valve will revert to CLOSE position MODE OPEN DATA TEMP DATA PH TERM DATA UNITS PH term Used to compensate for the changes in water conductivity due to pH In the UK it is recommended that b...

Page 41: ...line See Purge sub menu notes This feature is only shown if no purge time is selected i e probe in boiler Increases the damping effect on the probe output If the probe is installed directly in the boi...

Page 42: ...e probe during the purge and causing an inaccurate reading The display will also only be updated when the blowdown valve is open This means that when the controller is switched on the display will sho...

Page 43: ...int as is practical weekly to ensure optimum performance Take a sample of the boiler water and measure its conductivity in S cm using a meter such as the Spirax Sarco MS1 If the controller is required...

Page 44: ...r individual plant Conditions vary widely as do the chemical properties and conductivity of contaminants In many cases the normal measured value of clean condensate will be very low perhaps only 1 or...

Page 45: ...ced to specific TDS levels and adjusted if required See OUTPUT RETRANS notes Sets the probe cleaning cycle duration interval and pulsed or constant Removes softens probe scaling After a leaning cycle...

Page 46: ...obe and in the boiler is causing frequent recalibration to be needed Set the duration to zero if the feature is not required Enter an interval time from 1 to 99 hours in 1 hour steps to set how often...

Page 47: ...0 mA Note If a purge time has been selected the 0 20 mA or 4 20 mA is held at the value recorded at the end of the last purge cycle 0 or 4 mA This selects either 0 or 4 mA default When entering this m...

Page 48: ...switch box is to be fitted to the blowdown valve actuator If a switch box is not fitted select NONE default Will not show if the duration is zero The time the valve takes to close Only shows if a swi...

Page 49: ...e if timer switch is fitted and selected Bottom blowdown alarm In the ON position an alarm will occur if the valve fails to lift off the seat after the predetermined time set in the timer menu Select...

Page 50: ...d be completely black if all pixels are working Press the button to enter test input mode or the button to exit the test mode and return to the main menu Displays the signal on each input TEST OUTPUT...

Page 51: ...istance in ohms Kohms or Mohms Not visible if no Pt100 is fitted Displays the equivalent operating temperature measured by the Pt100 if connected Displays the equivalent calculated Cell or Probe Facto...

Page 52: ...ses Resets the system to automatic control The system automatically resets after five minutes Press OK to select Reset SOFTWARE VERSION sub menu Allows the software version to be viewed SW VER PASS CO...

Page 53: ...1 See Figure 33 Fig 32 IR Bus RS485 IR Bus 1 IR Bus 2 Fig 33 RS485 RS485 To add another slave into an existing IR bus either re select master or turn its power OFF and then ON Only an IR master can p...

Page 54: ...n controls and alarms do however require testing and inspection General guidance is given in Health and Safety Executive Guidancenotes BG01 and INDG436 in the UK 8 3 General weekly maintenance Take a...

Page 55: ...ses to be replaced by manufacturer or accredited service department During installation or maintenance the rear of the product MUST be protected from environmental pollutants entering the product Alte...

Page 56: ...any faults in the wiring external sensors transducers and modules associated with that connection Explanation The internal power supply is unable to power up If the voltages cannot be generated the po...

Page 57: ...mode and has not pressed a button for 5 minutes or more 1 Re enter the commissioning mode if required 2 Press OK to Clear 3 PV ALARM The TDS has increased above the alarm level 1 Check product is wor...

Page 58: ...alarm relay for safety Clearing the error from the error screen just removes the message 1 Enter the commissioning setup mode If the correct password is entered all the latched alarms will be cleared...

Page 59: ...following information with any equipment being returned 1 Your name company name address and telephone number order number and invoice and return delivery address 2 Description and serial number of eq...

Page 60: ...nclosure Minimum of IP54 or UL50 NEMA Type 3 3S 4 4X 6 6P or 13 See Section 4 Mechanical Installation Enclosure rating front panel only NEMA type 4 hose down only UL approval and IP65 verified by TRAC...

Page 61: ...1 5 mm 18 16 AWG Maximum length 100 m 9990 and 999 0 ranges 30 m 99 90 range 10 m 9 990 range Recommended type Prysmian Pirelli FP200 Delta Crompton Firetuf OHLS Pt100 probe Type High temperature twi...

Page 62: ...high EMC 5 FSD for 0 9 999 range pH factor 0 50 1 00 0 7 default Neutralising factor 0 7 Resolution 0 1 FSD Drive ac 4 wires Temperature compensation TC Sensor type Pt100 Class B or better Range 0 250...

Page 63: ...Vac Inductive load 1 amp 250 Vac ac motor load HP 2 9 amp 250 Vac 1 10 HP 3 amp 120 Vac Pilot duty load C300 2 5 amp control circuit coils Electrical life operations 3 x 105 or greater depending on l...

Page 64: ...Ranges C or F Default C UNITS TDS or conductivity units Ranges S cm or ppm Default S cm PH TERM Ranges 0 50 1 00 Default 0 7 Resolution steps 0 01 Assuming S cm to ppm conversion 0 7 10 8 3 INPUT MENU...

Page 65: ...INTERVAL Time between purges Ranges 10 60 Default 30 Resolution steps 1 Units Minutes TDS PURGE BURNER Purge time dependant on time or burner firing time Only available if PURGE DURATION is greater t...

Page 66: ...ysteresis Ranges 0 SP Default 5 FSD Resolution steps 0 1 FSD Units S cm or ppm TDS CAL Actual water TDS or conductivity to calibrate product Ranges 0 FSD Default 4000 Resolution steps 0 1 FSD Units S...

Page 67: ...TERVAL Time between probe cleaning Only available if CLEAN DURATION is greater than 0 seconds Ranges 1 99 Default 12 Resolution steps 1 Units Hours CLEAN Only available if CLEAN DURATION is greater th...

Page 68: ...20 mA Ranges 0 FSD Default FSD Resolution steps 0 1 FSD Units S cm or ppm COMMS ADDRESS MODBUS communication Ranges 1 247 Default 1 COMMS BAUD MODBUS communication Ranges 1200 9600 19200 Default 9600...

Page 69: ...ION is greater than 0 seconds Ranges FITTED or NONE Default FITTED CLOSING Time allowed for valve to close Only available if TIMER DURATION is greater than 0 seconds Ranges 1 10 Default 5 Resolution s...

Page 70: ...RM Default 3 FSD Resolution steps 0 1 FSD Units S cm or ppm DELAY Process Variable alarm delay Ranges 0 99 Default 0 Resolution steps 1 Units Seconds BB LIFT Alarms occurs if valve does not lift off t...

Page 71: ...3 ohms 1 4 Mohms Only available if a Pt100 is fitted INPUT OP TEMP Boiler water operating temperature Ranges 0 250 C or 32 482 F Resolution steps 1 Units C or F INPUT PROBE F Calculated cell or probe...

Page 72: ...s 0 Ranges ON or OFF Default ON Press the OK button to activate the relay Automatic control of relays is selected by selecting cancel or after 5 minutes has elapses OUTPUT ALARM 1 Energises or de ener...

Page 73: ...s Quantity of registers 2 bytes Cyclic redundancy check CRC 2 bytes Total 8 bytes Format Response frame Address 1 byte Function code 1 byte or error code function code plus 128 Byte count 1 byte or ex...

Page 74: ...aster s database 1 Process variable PV TDS 25 C 2 Set Point SP 3 S cm or ppm general data 4 Alarm 1 5 Range index 6 Probe factor 7 Temperature compensation C or F 8 Purge time seconds 9 Clean duration...

Page 75: ...INS DAYS Shown if CP32 selected Not shown if duration 0 Visible ONLY when Purge Duration MANUAL 0 seconds Note default ON but OFF if AUTO of Duration manual 0 Explanation If ON product alarms if valve...

Page 76: ...IM P403 89 EMM Issue 8 76...

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