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29 

Register: 

Hex: 

Function: 

Binary Format: 

 
44103, 44104 
Read/Write 

1006,1007    

analog high limit            

bcdabcdbbcdcbcdd  bcde000000vspppp 

44353 
Read/Write 

1100             

number of taps               

000000000

nnnnnnn

  7 LSBs 

44354, 44355 
Read/Write 

1101,1102    

degrees per 
segment          

bcdabcdbbcdcbcdd  bcde000000vspppp 

44356 
Read/Write 

1103             

number of 
neutrals           

000000000000

nnnn

   4 LSBs 

44357 
Read/Write 

1104             

neutral start 
segment        

ssssssssssssssss 

  16 bits, first neutral tap 

44358 
Read/Write 

1105 

display “r”&“L” 

000000000000000

d

  enabled, LSB(

d

)= 1 

44609 
Read/Write 

1200             

relays enable                 

000000000000000

r

  enabled, LSB(

r

) = 1 

44610, 44611 
Read/Write 

1201,1202    

relay low limit             

bcdabcdbbcdcbcdd  bcde000000vspppp 

44612, 44613 
Read/Write 

1203,1204    

relay high limit             

bcdabcdbbcdcbcdd  bcde000000vspppp 

44614  
Read/Write 

1205             

relay low tap                

ssssssssssssssss 

  16 bits, low tap limit   

44615 
Read/Write 

1206             

relay high tap               

ssssssssssssssss 

  16 bits, high tap limit 

44616, 44617 
Read/Write 

1207, 1208 

rotation rate filter 
threshold 

bcdabcdbbcdcbcdd  bcde000000vspppp 

44618, 44619 
Read/Write 

1209, 120A 

averaging filter 
threshold 

bcdabcdbbcdcbcdd  bcde000000vspppp 

44620, 44621 
Read/Write 

120B, 120C 

averaging filter 
depth 

bcdabcdbbcdcbcdd  bcde000000vspppp 

44865, 44866 
Read/Write 

1300,1301    

preset position             

bcdabcdbbcdcbcdd  bcde000000vspppp 

44867 
Read/Write 

1302             

preset tap                  

ssssssssssssssss 

  16 bits, preset tap no. 

44868 
Read/Write 

1303             

load/clear preset 
control    

0000000000000

ccc

   3 LSBs (

ccc

) select 

      000 – no operation 
      001 – clear offset 
      010 – load preset 

45121 
Read/Write 

1400             

display blank                

000000000000000

b

  enabled, LSB(

b

)=1 

45122 
Read/Write 

1401             

menu mode                    

000000000000000

m

   LSB (

m

) select  

0= numeric, 1=alphanumeric 

45123 
Read/Write 

1402 

auto reset FA25  

000000000000000

m

   LSB (

m

) select  

0= Off, 1= On (Automatic Reset) 

45633 
Read/Write 

1600             

RS-232 mode                  

0000000000000

rrr

  3 LSBs (

rrr

) select  

000=datalogger mode, 001=polled mode, 
010=sampled mode, 011=command, 
100=reserved N/A, 101=RS485 Modbus, 

Summary of Contents for 1250B

Page 1: ...1 INSTALLATION AND PROGRAMMING MANUAL FOR MODEL 1250B PROGRAMMABLE POSITION MONITOR Solid State Synchro Indicator for Synchro Transmitter For use with firmware revision 4 04 or higher 000 1077 Rev J ...

Page 2: ... 3 5 Serial RS 485 MODBUS 24 4 Field Calibration and Test 32 33 5 Error Codes 34 6 Specifications 35 FRANKLIN GRID SOLUTIONS LLC PO Box 638 Saco Maine 04072 USA Sales Customer Service 800 225 9787 Technical Service 207 571 1202 Web Site www franklingrid com E mail sales franklingrid com This manual applies to all INCON model 1250B monitors with firmware revision 4 04 or higher Copyright 2000 2001 ...

Page 3: ...Field Wiring Diagram 22 4 1 Analog Output Adjustment Pots 32 LIST OF TABLES Table Page 1 1 Terminal Functions 6 1 2 DIP Switch Functions 6 1 3 Digital Communication Connector Pin Out 6 1 4 Analog Output Switch Positions 7 2 1 Numeric and Alpha numeric Menu Items 9 10 2 2 Serial Programming Commands 11 12 3 1 Analog Output Load Limits 21 3 2 Wiring 9 Pin Serial Connector Pin Out 24 3 3 Read Registe...

Page 4: ...puts are driven from the displayed value This feature makes the 1250B perfectly suited for applications like hydro dam gate position monitoring in which a cable or tape winds onto a spool and the circumference grows with each revolution The 1250B may be wired in parallel with existing synchro transmitter receiver pairs or wired directly to the synchro transmitter Additional 1250Bs may be wired to ...

Page 5: ...5 Figure 1 1 Mechanical Dimensions Figure 1 2 Field Wiring Diagram Figure 1 3 Field Wiring Diagram with 4 20mA Output ...

Page 6: ...the top PCB above the power transformer and is accessible through a slot in the left side of the case towards the rear of the instrument Table 1 2 DIP Switch Functions Switch Function 1 ASCII Communication Protocol Enable 2 MODBUS Communication Protocol Enable 3 Spare 4 High Low Relay Limit Option Enable 5 Analog Output Option Enable 6 Spare 7 Spare 8 Spare Table 1 3 Digital Communication Connecto...

Page 7: ... RD 4 Remote Indicator can be used 5 The 1250B and the synchro transmitter MUST BE WIRED TO THE SAME AC SOURCE Do not remove the jumpers from terminals E and F 6 A provided jumper or keyswitch may be installed between terminals 3 4 to prevent the program from being changed When these terminals are jumpered the menu will read EP x instead of OP x which indicates that you can Examine each Parameter ...

Page 8: ...8 Figure 2 1 Simplified Programming Flowchart ...

Page 9: ...ay will return to the menu Table 2 1 Numeric and Alphanumeric Menu Items Num eric Alpha numeric Protocol Default Value Programmable Range Function OP 0 Run Press the SELECT ENTER key to exit the Program mode OP 1 rLY E OFF On or OFF Enables the High Low Relays OP 2 Func 1 1 2 16 17 18 19 20 21 Select Operating Mode see page 12 OP 3 CPt 360 99999 to 99999 Scaled Mode Counts per Turn OP 4 LEFtd 4 0 ...

Page 10: ...F On or OFF Causes the display to go blank after 60 sec OP 51 RS232 0 0 to 4 6 and 7 RS 232 Mode 0 Serial Disabled 1 Data Logger Mode 2 Polled Mode 3 Sampled Mode 4 Serial Command Mode 5 Reserved 6 RS485 MODBUS Mode 7 Remote Display Driver Mode OP 53 Aut25 OFF On or OFF Auto Reset after FA 25 Error Page 13 OP 60 Add 99999 to 99999 Scaled Mode Add a data point pair to the Non Linear Conversion Tabl...

Page 11: ...POS Displays all current position data Angle turns count linear position non linear position tap position RLYENA ON Enables High Low Relays ON or OFF When enabled allows setting relay limits MODE nn Scaled or segmented modes See page 14 for details COUNTS nn nnn Set counts per turn n a floating point number 5 digits max LEFTDIG n Set number of digits to the left of the decimal point n an integer f...

Page 12: ...ibration mode the 1250 analog output will be forced to Low Mid High signal output Press the space bar to toggle between Low Mid High analog output Press the enter key to stop calibration LEDTEST Turns on all display segments Press the enter key to stop the LED test RLYTEST Turns on one relay at a time for testing Press the space bar to toggle between Low relay and High relay Press Enter to Exit Te...

Page 13: ...izing effect of harmonic noise on the power line The 1250B will display the synchro position more faithfully but more importantly the accidental accumulation of turns will be prevented This Turns Rate Threshold should be set at least TWICE the maximum expected synchro rotation rate in Degrees Per Second If harmonic noise is present on the power line the 1250B may not follow the normal synchro rota...

Page 14: ...hange When OP 14 FdPtH is set to zero this filter will be disabled The maximum value for this parameter is 128 0 The Serial Command Line protocol for this parameter is FDPTH_nnn nn Loss of Synchro Signal FA 25 Error Code Reset The INCON model 1250B has Synchro Signal Loss detection firmware that freezes all outputs at their last known good positions and displays an FA 25 error code when the synchr...

Page 15: ...gmented Linear Analog 19 Base 0 Uni polar Segmented Stepped Analog 20 Bi polar Segmented Linear Analog 21 Bi polar Segmented Stepped Analog Mode 1 Linear Scaled Mode This mode is used when the desired display and corresponding analog output signal is continuously variable The synchro transmitter could stop in any position and the 1250B must give a corresponding position reading The analog output c...

Page 16: ...tion Up to 100 data point pairs can be entered into the conversion table Data point pairs can be entered through the serial command mode using the TADD command see Table 2 2 To learn a data point pair use menu OP 64 LEArn Place the synchro transmitter in a known position Enter the converted y value for the present synchro position Data point pairs can be learned through the serial command mode usi...

Page 17: ... stepped analog output that jumps with each tap change To select this operating mode use the OP 2 Func MODE command to change the value to 16 or 17 Figure 2 4 Base 1 Uni polar Mode Analog Output Programming Example A typical transformer Load Tap Changer application with taps numbered 1 to 32 2 neutral taps 7 1 and 7 2 with 9 5o per tap presently set on tap 18 would be programmed as follows OP 2 Op...

Page 18: ...9 has a stepped analog output that jumps with each tap change To select this operating mode use the OP 2 Func MODE command to change the value to 18 or 19 Figure 2 5 Base 0 Uni polar Mode Analog Output Programming Example A typical transformer Load Tap Changer application with taps numbered 0 to 16 2 neutral taps with 10 5o per tap presently set on tap 9 would be programmed as follows OP 2 Operati...

Page 19: ...th LTC shaft position Mode 21 has a stepped analog output that jumps with each tap change To select this operating mode use the OP 2 Func MODE command to change the value to 20 or 21 Figure 2 6 Bi polar Mode Analog Output Programming Example A typical transformer Load Tap Changer application with 16 raised and 16 lowered taps 3 neutral taps located at 0 with 10o per tap presently set on tap 2L wou...

Page 20: ... Degrees Per Tap number that the 1250B needs for the OP 21 D SEG or DEGSEG command 7 If there are differences that appear to be two three or more times the normal difference between taps these are Double Taps or Multiple Taps Do not average these numbers with the rest when calculating the degrees per tap If they occur at only one position such as Neutral then use the OP 22 NEu NEUTRALS command to ...

Page 21: ...imum Load Maximum 0 to 1 mA Zero Ohms 10K Ohms 1 mA Zero Ohms 10K Ohms 0 to 2 mA Zero Ohms 5K Ohms 4 20 mA Zero Ohms 400 Ohms with 10 volt power supply 4 20 mA Zero Ohms 1100 Ohms with 24 volt power supply 3 1 1 Programming the Analog Output Span The upper and lower limits of the analog output must be defined in the Scaled Modes Use the OP 5 An L ANAMIN command to set the lower limit of the analog...

Page 22: ...ow relay limit the low relay turns on When the position value rises above the low relay limit the low relay will turn off When the value rises above the high relay limit the high relay turns on When the value falls below the high relay limit the high relay turns off Figure 3 1 Relay Field Wiring Diagram 3 3 1 Programming the Relay Limits Before relay limits can be set the relay option must be enab...

Page 23: ...until the commands RUN then EXIT are entered Polled Mode When this mode is selected the 1250B can be interrogated at any time via the RS 232 port for the current position This is done by first instructing the 1250B to latch the current position by transmitting an asterisk to the unit The position is then extracted one character at a time by transmitting the digits 0 through 6 Zero causes the sign ...

Page 24: ...lti Drop Option M The Serial RS 485 Half Duplex option on the Model 1250B can be used to program the instrument and to retrieve position data from the instrument The MODBUS protocol is a master slave packet based protocol with the 1250B operating as a RTU slave The MODBUS function commands recognized by the 1250B are 3 read multiple registers and 16 write multiple registers By supporting these two...

Page 25: ...h 08h 01h 03h 00h 03h Data from Last Register Hi Data from Last Register Lo CRC Lo CRC Hi 00h 02h xx xx 3 5 2 RS 485 Packet Format Write Write to Holding Registers GAP A gap in transmission of 3 5 character frames indicates to the slaves that a new packet is to follow No transmission gaps within a packet may exceed 1 5 character frames Byte 1 Device Address Address 0 is a broadcast address that al...

Page 26: ...1h 00h 00h 04h xx xx 3 5 3 RS 485 Packet Format Error Exception Response When the master sends a command the MSB bit in the Function Code is always clear When a slave responds to the command the slave leaves the MSB bit in the Function Code clear if the response is a normal response and sets MSB bit on if the response is an error exception response GAP A gap in transmission of 3 5 character frames...

Page 27: ...contains bit by bit in binary A row of 16 symbols shows what each of the 16 bits of the register contain MSB first and LSB last A BCD formatted floating point register is shown as follows two 16 bit binary words Bcdabcdbbcdcbcdd bcde000000vspppp bcda bcdb bcdc bcdd bcde are each four bit BCD digits as it would be seen on a display 000000 are 6 unused bits that report as 0 when read and must be 0 w...

Page 28: ...tap neutral tttttttt0000nnnn 0000 are unused bits t tap number n neutral number 40513 Read Write 0200 draghand reset control 00000000000000HL bit 1 to reset H high draghand L low draghand 40514 40515 Read Only 0201 0202 peak draghand scaled mode bcdabcdbbcdcbcdd bcde000000vspppp 40516 Read Only 0203 peak draghand segmented mode tttttttt0000nnnn 0000 are unused bits t tap number n neutral number 40...

Page 29: ...h tap ssssssssssssssss 16 bits high tap limit 44616 44617 Read Write 1207 1208 rotation rate filter threshold bcdabcdbbcdcbcdd bcde000000vspppp 44618 44619 Read Write 1209 120A averaging filter threshold bcdabcdbbcdcbcdd bcde000000vspppp 44620 44621 Read Write 120B 120C averaging filter depth bcdabcdbbcdcbcdd bcde000000vspppp 44865 44866 Read Write 1300 1301 preset position bcdabcdbbcdcbcdd bcde00...

Page 30: ... table position 100 delete table position 101 add learned table position 45890 Read Write 1701 table position 00000000tttttttt 8 LSBs 45891 45892 Read Write 1702 1703 table x bcdabcdbbcdcbcdd bcde000000vspppp 45893 45894 Read Write 1704 1705 table y bcdabcdbbcdcbcdd bcde000000vspppp 45895 Read Write 1706 table size 000000000sssssss 7 LSBs 49217 Write Only 2400 LED test write only 000000000000000s ...

Page 31: ...ad or delete to register 45890 1701h Table positions are numbered starting at 0 for the position with the lowest X value When a position is added or deleted from the table the table positions are re numbered Step 2 Second command To delete the position from the table write the delete table position 100 command to register 45889 1700h Done To read the table position data point pair write the load t...

Page 32: ...ERO pot accessible through the slot in the right side of the case see Figure 4 1 until the output signal is reading properly on the multi meter If menu commands are being used select the OP 32 H CAL command to force the analog output to HIGH scale output If you are using the RS 232 serial port press the space bar on the computer terminal The display on the 1250B should read HI The analog output hi...

Page 33: ... user programmed values and restore all factory default program values This cold boot is accomplished by pressing the MENU key while turning on the power to the 1250B There is no way to undo the effects of a cold boot LED Test The display can be tested Use the OP 40 LED t LEDTEST command to turn on all display LED s Press the ENTER key to stop the test RS 232 Port Test The RS 232 serial port can b...

Page 34: ...rr 7 Low Relay limit position cannot be displayed with the number of left digits set Increase number of left digits in OP 4 Err 8 High Relay limit position cannot be displayed with the number of left digits set Increase number of left digits in OP 4 OR limit not useable greater than 65 535 turns required to span between LO HI relay limits Increase counts per turn OP 3 or reduce span between relay ...

Page 35: ...ENT LED WITH SIGN RED HEIGHT 0 56 INCHES STATUS INDICATION FOUR DISCRETE LED S RED VIEWING DISTANCE 23 FEET UPDATE RATE 10 TIMES PER SECOND DISPLAY RANGE 0 0000 TO 99999 SCALABLE TO OTHER UNITS ACCURACY 25 DEG C 10 ARC MINUTES W TYPICAL SYNCHRO RESOLUTION 6 ARC MINUTES TEMPERATURE DRIFT 0 2 ARC MINUTES PER DEGREE C WITH TYPICAL SYNCHRO ELECTRICAL INPUTS SIGNAL INPUT 3 PHASE 0 TO 90 VAC INPUT ISOLA...

Page 36: ...36 Model 1250B Installation Programming Manual ...

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