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Model 817/818 - Lake Shore Cryotronics, Inc.
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1. 8 i i EEE ME J J1 located on J2 located analog input on 818 rear panel 1 Vin 41 39 gt lt 42 14 Vin Vin Vin Rx J1 7 gt lt 42 4 Rx Tx 1 8 2 lt J2 11 Tx 2 J1 9 gt A2NC A2NO A2NO A2CM A2CM 1 J1 12 2 lt J2 9 A1NO A1CM J1 13 2 A1CM 91 14 2 lt J2 8 A1NC RS232C GND JE 6 gt 32 12 R9232C GND C JC 1 __ 0 2 GND Figure 4 7 Power Supply Schematic zi FIGURE 4 8 JD r I Om 05 10 9 19 7 8 TX1 Model 818 Power Supply Component Layout Table 4 6 A2 818 Rear Panel Assembly LSCI Part Number 108 0468 ITEM LSCI TOT NO DESCRIPTION STOCK NO MFR MFR PART NO QTY F1 POWER ENTRY MODULE 106 026 SCH FN382 6 12 1 FUSE HOLDER POWER SWITCH H1 SCREW 4 40x3 8 FHMS 3 BLACK OXIDE FINISH H2 4 NUT 3 H3 MICA INSULATOR TO 220 110 061 1 NYLON SHOULDER WASHER 110 022 MOT B51547F015 1 H5 HARDWARE KIT FOR J2 106 239 AMP 552568 1 1 J2 14 PIN D STYLE RECEPT 106 236 AMP 552308 1 1 1 818 REAR PANEL 107 130 LSCI 107 130 1 DWG C 312 84 01 51 SWITCH 115 230 LINE 105 101 SWIT C46206LFR 1 VOLTAGE SELECTOR U1 VOLTAGE REGULATOR 5V 102 011 7805ACT 1 45 Table 4 7 Model 817 Final Assembly LSCI Part Number 1023 ITEM LSCI TOT N DES P STOCK NO R FR PART NO 1 1 817 DISPLAY BOARD 113 136 LSCI 113
2. O O O 955 O O Q O Q Table 3 5 2 2 2 37946 36668 35378 32126 28869 25643 22480 19395 16053 13552 10809 08197 05687 00852 96003 90579 85614 80479 74703 67479 60665 53675 46370 38832 31868 26476 21712 17857 15106 13317 12169 11353 10729 09810 09125 E F ft 3 0 AD Curve Curve Curve Curve PROM Voltage 41773 40475 39217 0 1 2 3 Curve Information DT 500DI 8B DT 500DI 8A DT 500DRC D 0 50008 1 13 12 11 10 O O O O O O O O O O S O O O O O O O O O O O O O O O O O O O O O oc O O O m e alje 18 29 28 24 250 Temp 220 225 230 240 245 255 260 265 270 O O O O O Temp _ K _ O O 53 3 02 92 01 OY S hp LP O O O O ANOO N gt Voltage 59646 958262 56877 55504 54136 52801 51469 50155 48815 47486 46148 O O O O O O PROM Voltage 2 46386 2 44821 2 43188 2 41500 2 39781 2 37578 2 33823 2 29906 2 26440 2 23248 2 20480 2 17716 2 14994 2 12245 2 10065 2 07844 2 03712 1 99736 1 95641
3. Curve 0 DT 500DI 8B 25 Table 3 5 Curve Information cont d Temp K _ 275 0 280 0 285 0 290 0 295 0 300 0 305 0 310 0 315 0 320 0 325 0 330 0 Temp 4 Voltage 44800 43451 42064 40675 39274 37875 36436 35002 33559 32109 30656 29222 OO O Curve 1 DT 500DI 8A Voltage Temperature Characteristics PROM Voltage 91202 85236 79177 73193 66870 59215 51169 43234 34993 28434 23212 18995 16027 14015 12689 11741 11007 09942 09178 EIE E E E ELE 11 10 O O O O OO O O O OO OO OO O O OO OO b O O O SO O O O PROM Voltage 08559 07992 07502 06307 05136 03951 02744 01475 00193 98892 98264 97557 96216 94877 93535 92166 90798 89426 88052 86676 85298 83936 82531 81142 79749 78351 76950 75544 74135 72739 71308 69891 68469 67043 65615 64185 62754 61333 Curve 1 DT 500DI 8A Table 3 5 Curve Information cont d Temp K _ 215 220 225 230 235 240 245 250 255 260 265 270 275 280 285 290 295 300 305 310 315 320 325 330 O O OO PROM Voltage 0 59901 0 58502 0 57099 0 55715 0 54327 0
4. I II III IV Table of Contents eneral Information l introduction 2 Description Specifications 4 Options 5 Instrument Identification Installation 2 1 Introduction 2 2 Initial Inspection 2 3 Power Requirements 2 4 Grounding 2 5 Installation 2 6 Repackaging for Shipment perating Instructions 1 Introduction 2 Controls Indicators 3 Temperature Readout 4 Standard Curves 5 Multiple Curves 6 Alarm Point Relays 7 Serial Interface Maintenance 4 1 Introduction 4 2 Test Equipment and Accessories 4 3 Calibration 4 4 Troubleshooting N 2 S Fe QN Ov Un Un 23 23 23 23 1 1 Figure Figure Table Figure Figure Figure Figure Table Table Table Table Table Table Figure Figure Table Figure Figure Table Figure Figure Table Figure Figure Table Table Table 1 1 2 1 2 2 2 3 3 1 3 1 3 2 3 3 3 4 3 2 3 3 3 4 3 5 4 1 4 2 4 1 4 2 4 3 4 3 4 4 4 4 4 5 4 6 4 5 4 7 4 8 4 6 4 7 4 8 List of Illustrations Specifications Model 817 818 Input amp Output Configurations Sensor Wiring Diagram Front Panel Mounting Hole Detail Index Key Correlation Typical Front Panel for Model 817 818 Model 817 Rear Panel Model 818 Rear Panel Top View of Model 817 818 Relay Truth Table 5232 Interface Specifications RS232C Commands and Format Curve Information Troubleshooting Guide Parts List Display B
5. Instruction Manual Model 817 818 Cryopump Monitor Obsolete Notice This manual describes an obsolete Lake Shore product This manual is a copy from our archives and may not exactly match your instrument Lake Shore assumes no responsibility for this manual matching your exact hardware revision or operational procedures Lake Shore is not responsible for any repairs made to the instrument based on information from this manual akeShore Lake Shore Cryotronics Inc 575 McCorkle Blvd Westerville Ohio 43082 8888 USA E Mail Addresses sales lakeshore com service lakeshore com Visit Our Website www lakeshore com Fax 614 891 1392 Telephone 614 891 2243 Methods and apparatus disclosed and described herein have been developed solely on company funds of Lake Shore Cryotronics Inc No government or other contractual support or relationship whatsoever has existed which in any way affects or mitigates proprietary rights of Lake Shore Cryotronics Inc in these developments Methods and apparatus disclosed herein may be subject to U S Patents existing or applied for Lake Shore Cryotronics Inc reserves the right to add improve modify or withdraw functions design modifications or products at any time without notice Lake Shore shall not be liable for errors contained herein or for incidental or consequential damages in connection with furnishing performance or use of this material Obsolete Manual 1985 Section
6. 2 0 28 0 29 0 30 0 31 0 32 0 33 0 34 0 35 0 36 0 37 0 38 0 39 0 40 0 42 0 44 0 46 0 48 0 50 0 Voltage 40615 39287 38021 36687 35647 34530 33453 32412 31403 30422 29340 28527 27607 26702 25810 24928 24053 F PEPE p R ES S EP ES BS FS FA ES ES PS E ES E EB S ES ES ES E ES E FS ED ES ES E ES ES ES ES ES 23184 22314 221555 19645 17705 15558 13598 12463 11896 11517 1 1202 10945 10702 10465 10263 10060 09864 09675 09477 09309 09131 08955 08781 08436 08105 07748 07402 07053 227 Table 3 5 Curve Information Curve 6 DT 470 cont d Temp PROM Temp PROM BP K Voltage BP K Voltage 52 0 1 06700 260 0 61465 54 0 1 06346 265 0 60273 56 0 1 05988 270 0 29080 58 0 1 05629 275 0 57886 1 4 60 0 1 05277 6 280 0 26707 65 0 1 04353 285 0 25492 70 0 1 03425 290 0 54294 75 0 1 02482 295 0 23093 13 77 amp 1 02044 300 0 51892 80 0 1 01525 305 0 50689 85 0 1 00552 310 0 49484 90 0 99565 315 0 48278 12 95 0 98574 320 0 47069 100 0 97550 325 0 45858 105 0 96524 330 0 44647 110 0 95487 335 0 43435 11 115 0 94455 5 340 0 42238 120 0 93383 345 0 41003 125 0 92317 350 0 39783 130 0 91243 355 0 38561 135 0 90161 360 0 37337 10 140 0 89082 365 0 36110 145 0 87976
7. 0 2 6187 23 24 0 1 2317 4 2 2 6074 22 25 0 1 1900 4 4 2 5956 21 26 0 1 1602 4 6 2 5834 20 27 0 1 1402 4 8 2 5709 19 28 0 1 1269 5 0 2 5580 18 29 0 1 1173 28 5 2 2 5484 17 30 0 1 1100 5 4 2 5312 16 31 0 1 1039 5 6 2 5173 32 0 1 0991 5 8 2 5033 15 33 0 1 0949 6 0 2 4890 34 0 1 0913 6 5 2 4524 14 35 0 1 0879 7 0 2 4151 36 0 1 0850 7 5 2 3773 37 0 1 0822 8 0 2 3394 13 38 0 1 0795 27 8 5 2 2976 39 0 1 0770 9 0 2 2643 40 0 1 0746 9 5 252271 42 0 1 0697 10 0 2 1919 12 44 0 1 0649 10 5 2 1566 46 0 1 0603 11 0 2 1221 48 0 1 0558 11 5 2 0881 50 0 1 0512 12 0 2 0545 52 0 1 0467 12 5 2 0211 54 0 1 0421 13 0 1 9875 56 0 1 0376 1943 1 9537 58 0 1 0330 14 0 1 9193 11 60 0 1 0285 14 5 1 8843 65 0 1 0168 15 0 1 8480 70 0 1 0049 15 5 1 8110 10 75 0 0 9930 16 0 1 7748 77 4 0 9870 26 16 5 1 7441 80 0 0 9805 17 0 1 7047 85 0 0 9680 1743 1 6702 90 0 0 9553 18 0 1 6361 9 95 0 0 9427 18 5 1 6022 100 0 0 9297 19 0 1 5676 105 0 0 9168 19 5 1 5316 110 0 0 9038 20 0 1 4950 115 0 0 8907 21 0 1 4218 8 120 0 0 8777 25 22 0 1 3461 125 0 0 8643 24 23 0 1 2840 130 0 0 8510 Table 3 5 Curve Information Curve 5 DT 500DI 8C cont d Temp PROM Temp PROM BP K Voltage BP K Voltage 135 0 0 8377 235 0 0 5625 140 0 0 8243 4 240 0 0 5490 145 0 0 8108 245 0 0 5358 150 0 0 7974 250 0 0 5226 155 0 0 7837 255 0 0 5096 160 0 0 7701 260 0 0 4966 165 0 0 7564 265 0 0 4836 170 0 0 7427 2 0 0 0 4705 175 0 0 7289 275
8. 136 1 A1A2 817 MICROPROCESSOR BD 113 137 LSCI 113 137 1 1 817 ANALOG INPUT BD 113 138 LSCI 113 138 1 H1 STANDOFF 6 32x M F CCRD 660A 5002 19 8 H2 STANDOFF 6 32x HEX CCRD 635A 5007 19 4 H3 SCREW 6 32x PHMS 4 H4 SCREW 6 32x3 8 FHMS 4 BLACK OXIDE FINISH H5 SCREW 4 40x3 8 FHMS 1 BLACK OXIDE FINISH H6 SCREW 8 32x2 FHMS 4 H7 4 NUT 1 H8 MICA INSULATOR TO 220 110 061 1 H9 NYLON SHOULDER WASHER 110 022 MOT B51547F015 1 H10 8 SQUARE NUT 4 H11 8 ACORN NUT BLACK 4 OXIDE FINISH H12 KEY TOPS GREY 105 676 LSCI 4 J1 14 PIN CABLE CONNECTOR 106 409 MOLX 8676 22 51 1514 1 COVER PLATES 106 410 MOLX 15 05 6143 2 MP1 817 FRONT SUBPANEL 107 115 LSCI 107 115 1 DWG C 293 84 01 MP2 817 FRONT PANEL OVERLAY 107 113 LSCI 107 113 1 ART 1019 84 01 MP3 817 ENCLOSURE 107 116 LSCI 107 116 1 DWG C 294 84 01 MP4 817 REAR PANEL 107 117 LSCI 107 117 1 DWG C 303 84 01 01 VOLTAGE REGULATOR 5V 102 011 7805ACT 1 46 ITEM NO A1A1 A1A2 A1A3 1 4 Table 4 8 Model 818 Final Assembly LSCI Part Number 1024 DES RIPTIC 818 DISPLAY BOARD 818 MICROPROCESSOR BD 818 ANALOG INPUT BD 818 POWER SUPPLY BD 818 REAR PANEL ASSEMBLY FUSE 1A STANDOFF 6 32x M F STANDOFF 6 32x2 SCREW 6 32x PHMS SCREW 6 32x3 8 FHMS BLACK OXIDE FINISH SCREW 8 32x4 FHMS 8 SQUARE NUT 8 ACORN NUT BLACK OXIDE FINISH KEY TOP GREY 14 PIN D STYLE PLUG STRAIN RELIEF 818 FRONT SUBPANEL DWG C 293 84 01
9. 2 4290 12 40 0 1 0746 6 0 2 3932 45 0 1 0630 6 5 2 3574 50 0 1 0515 7 0 2 3216 55 0 1 0399 7 5 2 2858 11 60 0 1 0284 8 0 2 2500 65 0 1 0159 8 5 2 2142 70 0 1 0035 9 0 2 1784 10 75 0 0 9911 9 5 2 1516 77 35 0 9849 10 0 2 1247 80 0 0 9780 11 0 2 0708 85 0 0 9649 12 0 2 0170 90 0 0 9518 95 0 0 9388 Table 3 5 Curve Information O OO O O OOO UP OO OO OO OO O O PROM Voltage 9257 9122 8988 8853 8718 8584 8449 8311 8173 8035 7896 7758 7620 7482 7344 1202 7060 6918 6777 6635 6493 6351 6210 6068 Curve 3 DT 500DRC El cont d Temp K _ 220 225 230 235 240 245 250 255 260 265 270 275 280 285 290 295 300 305 310 315 320 325 330 O O O O O OC O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O PROM Voltage 5926 5789 5651 5514 5377 5246 5115 4984 4853 4722 4588 4454 4320 4186 4045 3904 3763 3622 3476 3330 3184 3038 2893 23 Table 3 5 Curve Information Curve 4 CTI Diode Voltage Temperature Characteristics BP 29 28 27 26 23 23 22 21 20 19 18 l6 15 14 13 Temp K C C CO O OO OO O O C C C CO CO O O O O O
10. 52983 0 51639 0 50302 0 48965 0 47625 0 46292 0 44925 0 43559 0 42178 0 40797 0 39375 0 37951 0 36515 0 35078 0 33599 0 32121 0 30643 0 29159 0 27665 19 Table 3 5 Curve Information Curve 2 DT 500DRC D Voltage Temperature Characteristics Temp PROM Temp PROM BP K Voltage BP K Voltage 1 4 2 5984 25 17 0 1 6359 I5 2 5958 18 0 1 5646 1 6 2 5932 19 0 1 4932 1 7 2 5906 20 0 1 4219 1 8 2 5880 24 21 0 1 3505 1 9 2 5854 22 0 1 3006 30 2 0 2 5828 23 23 0 1 2507 2 2 2 0135 24 0 1 2114 2 4 2 5643 22 25 0 1 1720 2 6 2 5551 21 26 0 1 1486 2 8 2 5458 20 21 0 1 1308 29 3 0 2 5366 19 28 0 1 1190 3 2 2 5226 18 29 0 1 1116 3 4 2 5086 17 30 0 1 1058 3 6 2 4946 16 32 0 1 0970 3 8 2 4807 15 34 0 1 0902 4 0 2 4667 36 0 1 0850 4 2 2 4527 38 0 1 0798 4 4 2 4387 14 40 0 1 0746 4 6 2 4247 45 0 1 0633 4 8 2 4108 50 0 1 0520 5 0 2 3968 13 55 0 1 0407 Bud 2 3618 60 0 1 0287 6 0 2 3269 65 0 1 0166 6 5 2 2919 12 70 0 1 0046 7 0 2 2570 75 0 0 99172 7 5 2 2220 80 0 0 97890 8 0 2 1871 85 0 0 96609 8 5 251521 11 90 0 0 95327 28 9 0 2 1172 95 0 0 93987 9 5 2 0909 100 0 0 92647 10 0 2 0646 105 0 0 91307 11 0 2 0119 110 0 0 89966 12 0 1 9592 115 0 0 88626 27 13 0 1 9066 120 0 0 87286 14 0 1 8338 125 0 0 85946 26 15 0 1 7610 16 0 1 6984 20 Table 3 5 Curve Information Curve 2 DT 500DRC D cont d Temp PROM Temp PROM Voltage Voltage 130 0 0 84606 4 305 0 0 36397 135 0 0 83228 310 0 0 3494
11. 818 Microprocessor Board LSCI Part Number 113 137 ITEM LSCI TOT NO DESCRIPTION STOCK NO MFR PART NO QTY 1 2 817 818 MICROPROCESSOR 111 061 LSCI 111 061 1 P C BOARD B 334 84 O1B Ci TANT 10 MF 35V 101 137 SPRG 119D106X0035DB1 2 C2 CAP 03 QPAK 28 101 125 RGRS UQ28 03 1 C3 CAP 03 MF QPAK 20 101 123 RGRS UQ20 03 1 C4 10 35 101 137 SPRG 119D106X0035DB1 REF C5 CAP CER 30 PF 500V 101 067 CDE CD15ED300J03 2 C6 CAP CER 30 PF 500V 101 067 CDE CD15ED300J03 REF C7 CAP POLY 68 MF 100V 101 046 PLSY 160 68J100G 1 CR1 ZENER DIODE 3 9V 102 050 1N748A 1 JA 12 PIN TERMINAL 110 201 SMTC 55 132 0 9 12 18 PIN TERMINAL 110 201 SMTC SS 132 G 9 18 JC 12 PIN TERMINAL 110 201 SMTC 55 132 G 9 12 Q1 TRANSISTOR PNP 102 072 2N3906 2 Q2 TRANSISTOR PNP 102 072 2N3906 REF R1 RES MTF 10K 1 W 103 358 1 R2 RES MTF 8 25K 1 W 103 340 1 R3 RES MTF 1M 1 W 103 472 1 R4 RES MTF 4 75K 1 W 103 306 1 R5 RES MTF 1000hm 1 W 103 216 1 R6 5 30 1 W 103 209 1 R7 RES MTF 1K 1 W 103 265 1 U1 IC MICROPROCESSOR 104 510 INT P8031AH 1 U2 IC OCTAL LATCH 104 528 HAR HCP82C82 1 U3 IC EPROM 64K 104 620 INT 2164 4 1 U4 IC NOVRAM 64X4 104 651 XCOR X2210P 1 05 IC QUAD 2 IN NAND GATE 104 200 7400 1 XU1 SOCKET IC 40 PIN DIP 106 507 AUG 540 AG11D 1 XU2 SOCKET IC 20 PIN DIP 106 504 AUG 520 AG11D 1 XU3 SOCKET IC 28 PIN DIP 106 506 AUG 528 AG11D 1 XU4 SOCKET IC 18 PIN DIP 106 509 AUG 518 AG
12. A option ground 6 No connection 6 L A option output 7 Receive RS232C 7 I V sensor high 8 Transmit RS232C 8 Alarm 1 normally closed 9 Alarm 2 normally closed 9 Alarm 1 normally open 10 Alarm 2 normally open 10 Alarm 2 normally open 11 Alarm 2 common 11 Transmit RS232C 12 Alarm i normally open 12 Ground RS232C 13 Alarm 1 common 13 Monitor option output 14 Alarm 1 normally closed 14 I V sensor low Monitor ground Figure 2 2 Sensor Wiring Diagram Pin Number 817 818 4 7 I V SENSOR 480 429 189 169D 4PLOS W _ 2 5 B 5 22 13 259 4 97 12 624 25 0 636 62 1 575 2 06 5 232 3 50 8 89 4 12 10 465 FIGURE 2 3 Front Panel Mounting Hole Detail SECTION III Operating Instructions 3 1 Introduction This section contains complete operating instructions for the Model 817 and Model 818 Cryopump Monitors Included is a description of the front and rear panel controls and indicators programming instructions and application examples 3 2 Controls Indicators The operating controls and indicators are shown in Figures 3 1 3 2 3 3 and 3 4 and are keyed in Table 3 1 Table 3 1 Index Key Correlation No Key Function 1 Digital display for temperature and set point values 2 Function key for alarm point 1 3 Function key for alarm point 2 4 Up key used to increment alarm set points and curve number 5 Down key used to decrement alarm set points and cu
13. Example If the temperature was at 330K alarm set point 1 is 300 and alarm set point 2 is 30 then the host computer should read the following after sending the S command 330 300 030 A I Notice that alarm 1 relay is active and alarm 2 relay is inactive 14 U Alarm 1 Set Point Used to update alarm 1 set point Format UXXX Enter all three digits including leading zeroes Example To change alarm set point 1 to 200 send the following command The S command can se used to check the value U200 L Alarm 2 Set Point Used to update alarm 2 set point Format LXXX Enter all three digits including leading zeroes Example To change alarm set point 2 to 50 send the following command The S command can be used to check the value L050 The following program will input a command from the keyboard and output it to the instrument HP 86B 10 DIM A 100 B 100 A 15 OUTPUT TO UNIT B IS INPUT 20 CONTROL 10 3 6 300 BAUD 30 CONTROL 10 4 10 40 INPUT A 50 OUTPUT 10 A 60 IF A S THEN 80 7 BITS ODD PARITY 1 STOP ENTER COMMAND OUTPUT THE COMMAND GOTO ENTER COMMAND sum OFF j dam 70 GOTO 40 RETURN FOR NEW COMMAND 80 ENTER 10 B INPUT INFORMATION FROM UNIT 90 DISP B DISPLAY DATA ON SCREEN 100 GOTO 40 RETURN FOR NEW COMMAND 2185 Lake Shore Cryotronics Inc Manufacturers of cryogenic thermometry and instrumentation ADDITIONAL STA
14. for a short between the I V and the I V pins Check that the sensor is connected up properly Refer to Figure 2 2 Check for breaks in sensor cable Make sure the wires are pressed firmly into the proper input terminals Check to see if the proper curve is selected for the sensor being read Check for a faulty sensor If so replace it 5 Unable to update alarm set points 6 Relay contacts not working 1 1 2 Make sure the set point disable jumper is in place Make sure the wires are pressed firmly into the proper pins on the input connector Check the drive line pin 6 of the relay in question on the display board to verify that it changes from a high 5 to a low 0v when the temperature A is greater than the set point for alarm 1 B is less than the set point for alarm 2 231 ITEM NO 1 1 DS1 DS2 DS3 H1 JA JB JMP1 2 K1 K2 Q1 Q2 Q3 RN1 RN2 RN3 S1 53 54 U1 U3 XDS1 XDS2 XDS3 239 Table 4 2 1 1 817 818 Display Board LSCI Part Number 113 136 DESCR 817 818 DISPLAY P C BOARD ART B 333 84 01B DIGIT 3 LED DISPLAY DIGIT 3 LED DISPLAY DIGIT 3 LED DISPLAY JUMP JAX 12 PIN TERMINAL 14 PIN TERMINAL 3 PIN RA TERMINAL RELAY DIP RELAY DIP TRANSISTOR PNP TRANSISTOR PNP TRANSISTOR PNP RES NET 4 7KX9 1C RES NET 5 6KX3 IND RES 180 7 DIP SWITCH DOWN ARROW SWITCH UP ARROW SWITCH SP 2
15. with special DT 500 sensors Accuracy of the instruments is 0 05K below 30K and 0 4K above 30K when utilized with DT 500 CPU sensors The Model 817 and Model 818 feature two alarms which can be used to safeguard or initiate and control automatic cryopump regeneration cycles The alarms may be used as high and low alarms The alarm set points are front panel setable with function keys and up down keys and may be checked without changing them The up down keys can be deactivated by the removal of a jumper accessed through the top of the unit Each set point features a deadband of O 5K to reduce chattering of the relay contacts The Model 817 and Model 818 feature an RS232C serial interface which allow the user to monitor the temperature and monitor and change the alarm set point values from a host computer The Model 817 features power supply regulation within the instrument The user is required to supply unregulated DC power The Model 818 features a built in power supply with AC filtering and line voltage selection The sensor input alarm contacts and 5232 lines are all available on single connector on the rear panel of each instrument 1 3 Specifications The instrument specifications are listed in Table 1 1 These specifications are the performance standards or limits against which the instrument is tested Any changes in the specifications due to manufacturing or design changes will be covered by revision pages a
16. 0 140 0 0 81850 315 0 0 33482 145 0 0 80472 320 0 0 32025 150 0 0 79094 325 0 0 30568 155 0 0 77716 330 0 0 29111 160 0 0 76338 335 0 0 27654 165 0 0 74961 340 0 0 26197 170 0 0 73582 3 345 0 0 24739 175 0 0 72170 350 0 0 23325 180 0 0 70757 355 0 0 21911 185 0 0 69344 360 0 0 20497 190 0 0 67931 2 365 0 0 19083 195 0 0 65518 370 0 0 17774 200 0 0 65105 375 0 0 16464 205 0 0 63693 1 380 0 0 15155 210 0 0 62280 215 0 0 60867 220 0 0 59455 225 0 0 58080 230 0 0 56707 235 0 0 55334 240 0 0 53960 245 0 0 52649 250 0 0 51337 255 0 0 50026 260 0 0 48714 265 0 0 47403 270 0 0 46057 275 0 0 44711 280 0 0 43365 285 0 0 42019 290 0 0 40613 295 0 0 39208 300 0 0 37802 21 Table 3 5 Curve Information Curve 3 DT 500DRC E Voltage Temperature Characteristics 2222 29 28 21 26 Temp PROM Temp PROM Voltage BP K Voltage 1 4 2 6591 25 13 0 1 9632 1 5 2 6567 14 0 1 9011 1 6 2 6542 15 0 1 8390 1 7 2 6518 16 0 1 7769 1 8 2 6494 17 0 1 7148 1 9 2 6470 24 18 0 1 6527 2 0 2 6446 19 0 1 5724 20 06 2 6355 20 0 1 4922 2 4 2 6265 21 0 1 4120 2 6 2 6115 23 22 0 1 3317 2 8 2 6084 23 0 1 2837 3 0 2 5994 22 24 0 1 2357 3 2 2 5868 21 25 0 1 1877 3 4 2 5742 20 26 0 1 1559 3 6 2 5616 19 27 0 1 1365 3 8 2 5490 18 28 0 1 1239 4 0 2 5364 17 29 0 1 1150 4 2 2 5221 16 30 0 1 1080 4 4 2 5077 15 32 0 1 0981 4 6 2 4934 14 34 0 1 0909 4 8 2 4791 13 36 0 1 0848 5 0 2 4648 38 0 1 0797 545
17. 0 0 4574 6 180 0 0 7152 3 280 0 0 4442 185 0 0 7013 285 0 0 4307 190 0 0 6874 290 0 0 4171 195 0 0 6734 295 0 0 4035 200 0 0 6595 2 300 0 0 3898 205 0 0 6455 305 0 0 3758 210 0 0 6315 310 0 0 3618 215 0 0 6176 315 0 0 3477 2 220 0 0 6036 320 0 0 3336 22540 0 5898 325 0 0 3194 230 0 0 5761 1 330 0 0 3054 Table 3 5 Curve Information Curve 6 DT 470 Voltage Temperature Characteristics BP 29 28 27 26 amp CO CO Q CO CO CO CO Q N N N N N N N NN HS HP RP s e Temp K Co XO OO Ov Un 6 Ui 3 Voltage 69808 69674 69521 69355 69177 68987 68912 68574 68352 68121 67880 67632 67376 67114 66845 66571 66292 66009 65721 65430 R2 F3 ES FB F2 FS P2 PS 2 2 S R2 F2 PA S FS IS I ES ES fa ED E ES ES ES S S ES ES RS E E ES EDO EB EB E ES EDS 65134 64833 64529 64219 64112 63587 63263 62602 61920 61220 60506 39782 59047 58303 57551 56792 56027 54097 52166 50272 48443 6700 44850 43488 42013 BP jf 25 24 23 16 15 Temp K 10 5 11 0 11 5 12 0 1262 13 0 13 5 14 0 14 5 15 0 15 5 16 0 16 5 17 0 1729 18 0 18 5 19 0 19 5 20 0 21 0 22 0 23 0 24 0 25 0 26 0
18. 11D 1 1 CRYSTAL 5 000 MHZ 103 990 MTRN 1 295 A1NC JB 14 2 ns DERD anc A2NO 48 18 2 8 19 A2NO A14 P GER 5 m A15 726 12 m 3 2 8 1 188 NOIE 05 PIN 14 5 PIN 7 GND Figure 4 3 Microprocessor Board Schematic Diagram Al uo DUET TT TTTTTTTTTT Sere eee eT ce st INTG CJ gt ess 2 2 s PRETI V 5 8568 polo a liio 9 1 7 5 5 TT 25 bi mA 111111 7 TREES R4 TT TEAN TT TT SB 46 18 36 11 lt FO 45 3817 gt lt Lea GND JB 18 gt Q1 Li R6 AJ R1 R7 XD C1 E V J N N FIGURE 4 4 J PS III X U1 Model 817 818 Microprocessor Board Component Layout 3 Table 4 4 1 817 818 Analog Input Board LSCI Part Number 113 138 139 ITEM LSCI TOT NO DESCRIPTION STOCK NO MFR MFR PART NO QTY A1A3 817 818 ANALOG INPUT 111 062 LSCI 111 062 1 P C BOARD ART B 335 84 01B C1 CAP CER 150 PF 5007 101 085 CDE CD15FD151J03 1 C2 CAP PP 0015 MF 100V 101 001 CDE WMF1D15 1 C3 CAP POLY 1 MF 100V 101 032 PLSY 1501K100FC 2 C4 CAP POLY 1 MF 100V 101 032 PLSY 1501K100FC REF C5 CAP PP 33 MF 100V 101 025 FDYN MPP 11 33uFD 1 C6 390 PF 5007 101 096 CDE CD15FD391J03 1 C7 CAP POLY 1 M
19. 370 0 34881 150 0 86873 375 0 33650 155 0 85764 380 0 32416 160 0 84650 385 0 31180 9 165 0 83541 4 390 0 20958 170 0 82404 395 0 28700 175 0 81274 400 0 27456 180 0 80138 405 0 26211 185 0 78999 410 0 24963 190 0 71855 415 0 23714 9 195 0 76717 420 0 22463 200 0 75554 425 0 222212 205 0 74398 430 0 19961 210 0 73238 3 435 0 18696 215 0 72075 440 0 17464 220 0 70908 445 0 16221 225 0 69737 450 0 14985 7 230 0 68580 455 0 13759 235 0 67387 2 460 0 12536 240 0 66208 465 0 11356 245 0 65026 470 0 10191 250 0 63841 l 475 0 09032 255 0 62654 SECTION IV Maintenance 4 1 Introduction This section contains calibration and troubleshooting information for the Model 817 and Model 818 Cryopump Monitors 4 2 Test Equ ent and Accessories Use the following test equipment and accessories to calibrate and troubleshoot the instrument 1 High input impedance digital voltmeter 2 Oscilloscope 3 Precision 100K resistor 4 3 Calibration Use the following proceedure to calibrate the instrument The unit should be allowed half hour warm up time to achieve rated specs 1 Connect the precision 100K resistor across pins I and I Connect the DVM across the 100k resistor The voltage should read 1 0000 100 uV dc If needed adjust Current source adjustment trimpot Refer to Table 3 1 and Figure 3 4 2 Use the curve tables to determine the temperature fo
20. 818 FRONT PANEL OVERLAY ART 818 ENCLOSURE DWG C 313 84 01 LSCI OCK 113 136 113 137 113 139 113 140 108 046 110 001 105 676 106 237 106 238 107 115 107 128 107 129 MFR LSCI LSCI LSCI LSCI LSCI LIT CCRD LSCI AMP AMP LSCI LSCI LSCI LII 113 136 113 137 113 139 113 140 108 046 102074 ART NO 660A 5002 19 105 676 552134 1 2 552079 1 107 115 107 128 107 129 TOT PF DOF A AAA 2275 Era NU NL NEA Y CA er NNN a NTE NN NN asw Technical Data Models 817 and 818 Cryopump Monitors SNE gt 2 m Z 2 smitte omdr Monitor Cryopump Operating Temperature with Ease 818 CRYOPUMP MONITOR CONTROL ALARM POINTS 1 Features The new 817 and 818 Temperature Monitors provide an e 4to 330K Temperature Range effective economical means to monitor cryopump oper ating temperatues and to signal the need for regeneration e Digital Readout When combined with Lake Shore s proven DT 500 silicon 1 diode Temperature Sensors the 817 and 818 produce e 1K Resolution over Entire Range accurate high resolution temperature readings which can be observed directly on the unit or interfaced into a Accuracy to better than 0 5K d Programmable Electronic Alarms Both Models
21. CO O O O O O O O O O O O O O O O PROM Voltage 4000 3850 3656 3400 O O QO O O O O O O O O O H m nm p mp p p p p p p rp pH p E rn H EPP p EP IH pm p RRP 3161 2750 2350 1910 1500 1290 1162 1135 1109 1084 1058 1033 1007 0981 0955 0929 0903 0851 0799 0747 0693 0640 0505 0370 0235 0100 9958 9822 9690 9626 9560 9440 9314 9184 9049 8907 8769 8625 BP 12 LE 10 Temp K 120 1254 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 223 230 293 240 245 250 255 260 265 270 275 280 285 290 295 300 305 310 215 320 O O OO OO OO O O CO CO O OO CO O O O OCO O O O O C O CO O O O O O O O O O O O O O O PROM Voltage 8500 8376 8245 8109 7971 7828 7685 7543 7400 7255 7114 6972 6830 6690 6549 6408 6270 6133 5995 5858 5720 2583 5445 5308 5170 5032 4896 4757 4620 4481 4341 4197 4050 3911 3775 3640 3510 3382 3243 3106 2968 OO O C O C OO CO CO C O CO C C C O O CO O O O O O O OC O O O O O O O O O O O O O O O O Table 3 5 Curve Information Curve 5 DT 500DI 8C Voltage Temperature Characteristics Temp PROM Temp PROM BP K Voltage BP K Voltage 29 4
22. F 100V 101 042 PLSY 160 1K100G 2 C8 CAP TANT 10 MF 101 137 SPRG 119D106X0035DB1 3 C9 CAP TANT 10 MF 35V 101 137 SPRG 119D106X0035DB1 REF C10 CAP POLY 1 MF 100V 101 042 PLSY 160 1K100G REF 11 CAP ELECT 470 35 101 226 PANS 1 4715 1 11 CAP ELECT 1000 MF 16V 101 230 PANS 1025 1 C12 CAP TANT 10 MF 35V 101 137 SPRG 119D106X0035DB1 REF ZENER REFERENCE 1 22V 102 040 NAT LM313H 1 CR2 DIODE RECTIFIER 102 001 1N4006 1 4 LEAD NYLON SPACER 110 131 THEM 7717 7 1 1 14 HEADER 106 408 MOLX 8723 15 29 6014 1 71 4 PIN TERMINAL 110 201 SMTC 955 132 G 9 4 JB 10 PIN TERMINAL 110 132 SMTC 55 132 G 9 10 JC 12 PIN TERMINAL 110 132 SMTC 55 132 9 12 91 FET P CH 102 074 SIL 3N163 1 R1 5 3 74 1 W 103 296 1 R2 POT 5K 103 009 BOR 3006 P 502 2 R3 RES MTF 8 66K 1 W 103 344 1 R4 RES MTF 100K 1 W 103 420 3 RS RES MTF 4 99K 1 103 308 1 R6 POT 5K 103 009 BOR 3006 P 502 REF R7 RES MTF 15K 1 W 103 363 1 R8 RES MTF 100K 1 103 420 REF R9 RES MTF 100K 1 W 103 420 REF R10 RES MTF 200K 1 W 103 439 1 11 RES MTF 4 75K 1 103 306 2 R12 RES 3 24 1 103 291 1 R13 RES MTF 4 75K 1 W 103 306 REF Table 4 4 817 818 Analog Input Board cont d LSCI Part Number 113 138 ITEM LSCI TOT NO DESCRIPTION STOCK NO MFR MFR PART NO QTY 01 IC VOLTAGE INVERTER 104 052 ISL ICL7660CPA 1 U2 IC OP AMP 104 005 NAT LM308N 1 03 10 12 B
23. IT A D CONVERTER 104 456 ISL ICL7109CPL 1 UA HEX INVERTER 104 210 7406 1 XU1 SOCKET IC 8 PIN DIP 106 501 AUG 508 AG11D 2 XU2 SOCKET IC 8 106 501 AUG 508 AG11D REF XU3 SOCKET IC 40 PIN 106 507 AUG 540 AG11D 1 1 VOLTAGE REGULATOR 112 003 LSCI 112 003 1 WIRING ASSEMBLY PART USED IN 817 PART USED IN 818 2530 A1CM A1NO A2NC A2CM A2NO RX TX I VIN I VIN 41 13 2 lt J8 14 lt JB 13 41 12 gt lt JB 12 A1NO J1 9 gt 389 2 31 13 2 lt 48 11 2 lt 48 19 A2NO 41 7 lt 28 15 118 G TXD R13 2 R11 45 R8 6 JMP 1 15 5 R5 A Q1 1 A 3 4 c6 up 5 C4 R19 1 1 4 C1 Ai 5 JMP4 cs 5 JMP3 MOUNTED ON REAR PANEL 5 Y NOTE U4 PIN 14 45 PIN 7 GND Figure 4 5 Analog Input Board Schematic Diagram 40 e SLE 5 5 Sal gt FIGURE 4 6 Model 817 818 Analog Input Board Component Layout xq Table 4 5 1 4 818 Power Supply Board LSCI Part Number 113 140 ITEM LSCI TOT NO DESCRIPTION STOCK NO MFR R PART NO Y 1 4 818 POWER SUPPLY 111 064 LSCI 111 064 1 P C BOARD B 346 84 01A CR1 DIODE RECTIFIER 102 001 1N4006 2 CR2 DIODE RECTIFIER 102 001 1N4006 REF J1 4 PIN TERMINAL 110 201 SMTC 59 132 G 9 4 TX1 TRANSFORMER 109 026 LSCI 109 026 1 42 1 alba m
24. NDARD TEMPERATURE RESPONSE CURVES FOR 817 818 CRYOPUMP MONITORS The enclosed 817 818 Cryopump Monitor contains three additional standard curves to allow use with Lake Shore Cryotronics Inc s DT 500DI 8C Sensors DT 470 curve 10 sensors and CTI s diode sensors voltage V vs temperature table is included for each of these curves The LSCI DI 8C curve is used when curve 5 is selected and the CTI diode curve is used when curve 4 is selected The LSCI DT 470 curve 10 is used when curve 6 is selected The curve selected is the first number to appear on the display when the unit is powered up this provision was not on the earlier units An updated 817 818 PROM chip is available from Lake Shore Cryotronics for 50 00 When ordering an 817 818 PROM chip please specify the instrument s serial number All DT 500DI 8C sensors will have a 1 4 diameter green tag attached to their anode leads and be assigned a serial number with suffix C 28 27 26 Curve 0 DT 500DI 8B Voltage Temperature Characteristics PROM Voltage 08547 08038 07549 06400 05273 04123 02954 01748 00528 99263 98666 97988 96711 95397 94086 92767 91443 90124 88776 87434 86087 84735 83377 82032 80647 79274 77896 76513 75125 3133 72353 70936 69532 68125 66713 65302 Temp LK _ 9 0040 O QI AAAA
25. SWITCH SP 1 IC 7 SEG DEC DRIVER IC O C HEX INVERTER IC 8 BIT MULTIPLEXER SOCKET 14 PIN DIP SOCKET 14 PIN DIP SOCKET 14 PIN DIP LSCI STO 111 060 102 124 102 124 102 124 106 131 110 201 110 201 110 202 105 330 105 330 102 072 102 072 102 072 103 103 103 156 103 191 105 651 105 651 105 651 105 651 104 166 104 210 104 310 106 580 106 580 106 580 LSCI HP HP HP SEL SMTC SMTC SMTC EAC EAC BOR BOR BOR ALPS ALPS ALPS ALPS FARC NAT ARI ARI ARI P NO 111 060 hp 5082 7611 hp 5082 7611 hp 5082 7611 026 4810 00 C 252 55 132 6 9 99 132 0 9 TSW 120 08 G S RA D1C05D D1C05D 2N3906 2N3906 2N3906 4310 101 472 4306 102 562 4114R 001 181 KEF10901 KEF10901 KEF10901 KEF10901 9374PC 7406 DM81LS95AN 14 511 11 14 511 11 14 511 11 TOT REF REF 12 14 REF REF REF b REF REF REF REF 1 1 1 2 2 A2NO P1 8 P1 1 P1 2 P1 3 P3 5 P3 4 P1 4 P1 6 P1 5 ADA AD1 AD2 AD3 AD4 AD5 5 JA 1 2 GND JA 12 gt 5 5 S P CURVE SPL SPU JMP JMP 1 tad SO on DM81LS95AN RN1 NOTE U2 PIN 14 45 PIN 7 GND Figure 4 1 Display Board Schematic Diagram ED 8 9 9 o JA E S FIGURE 4 2 Model 817 818 Display Board Component Layout 234 Table 4 3 1 2 817
26. and power in 818 14 pin D style con nector with mating connector supplied for inputs and outputs IEC 320 connector for power cord Options and Accessories Available MN Adds buffered output of Sensor voltage 818 only LA Adds 1mV K linearized analog output of temperature 818 only 8101 Rack Kit Provides rack mounting for up to four model 817s or 8185 in standard 19 relay rack 4 This Page Intentionally Left Blank SECTION II Installation 2 1 Introduction This section contains information and instructions necessary for the installation and shipping of the Model 817 or Model 818 Cryopump Monitor 2 2 Initial Inspection This instrument is electrically and mechanically inspected prior to shipment It should be free from mechanical damages and in perfect working order upon receipt To confirm this the instrument should be inspected visually for obvious damage upon receipt and tested electrically by use to detect any concealed damage Each unit is supplied with an operating and service manual and a mating connector for the rear panel connector Be sure to inventory all components before discarding any shipping materials If there is damage to the instrument in transit be sure to file appropriate claims with the carrier and or insurance company Please advise Lake Shore Cryotronics Ine of such filings In case of parts shortages please advise us also The standard Lake Shore Cryotronics Warranty is given on t
27. change sheet or both to this manual 1 4 Options Curves Special unique or multiple curves may be preprogrammed into the unit Up to 10 curves can be stored in the unit and accessed by inserting provided jumper and using the front panel up down keys to count to the proper curve number Sensor Voltage Monitor Provides a buffered input voltage signal which is available on the rear panel connector Available for the Model 818 only Linear Analog Option Provides a linearized analog voltage signal representative of the sensor temperature with a voltage signal of imV k which is available on the rear panel connector Available for Model 818 only 8101 RACK KIT Provides rack mounting for up to four Model 817 s or 818 s in a standard 19 relay rack 1 5 Instrument Identification five digit serial number is used to identify the Model 817 or Model 818 This serial number should be used in all correspondence which the user may have with Lake Cryotronics Inc 202 1 1 1 Specifications Models 817 and 818 Cryopump Monitors input Characteristics Temperature Range 10 to 330K with standard DT 500DI 8B Sensor 4 to 330K with special DT 500 sensors See Response Curve Sensor order separately Lake Shore DT 500Di 8B Unit can be configured for special DT 500 sensors on quantity basis Sensor Input 2 terminal single sensor input Sensor Excitation Current source 10 microamperes S
28. e curves multiple curve units available on special order Temperature Readout Display 3 digit LED display in Kelvin Resolution 1 Keivin Accuracy Unit converts sensor voltage signal to temper ature with an accuracy of 0 05 below 30K and 0 4 above 30K when utilized with DT 500DI 8B Sensor Dis play rounds temperature to nearest 1K Response time Less than 1 second Control Relays High and Low Setpoints Front panel setable with function buttons and up down buttons Setpoints can be checked without changing them Up down buttons can be de activated via internal jumper Deadband is 0 5K at each setpoint Set Point Contacts SPDT 28 volts dc or peak ac 0 25 amperes 3 watts max 4 2223 64 E Walnut St Westerville Ohio 4308 I r 614 891 2243 Telex 24 5415 Cryotron WIVL PRINTED IN USA 1285 General Remote Interface RS232C 3 wire output of temperature and alarm status and input output of setpoint values Dimensions Weight 105mm wide X 132mm high 4 125in X 5 25in DIN quarter rack panel 817 depth behind panel is 64mm 2 5in Weight is 0 9kg 21b 818 depth is 117mm 4 6 Weight is 1 3kg 2 8 10 Power 817 Unregulated dc between 8 5 and 18 volts 350 milliamps typical 818 90 125 or 210 250 Vac selected via switch 50 or 60 Hz 7 watts Connections 817 Board mounted post pins with mating connector supplied for sensor input set poin
29. ensor Response Curve Standard units require Sensor Curve DI 8B Special curves unique curves multiple curve units available on special order Temperature Readout Display 3 digit LED display in Kelvin Resolution 1 Kelvin Accuracy Unit converts sensor voltage signal to temper ature with an accuracy of 0 05K below 30K and 0 4K above 30K when utilized with DT 500D 8B Sensor Dis play rounds temperature to nearest 1K Response time Less than 1 second Control Relays High and Low Setpoints Front panel setable with function buttons and up down buttons Setpoints can be checked without changing them Up down buttons can be de activated via internal jumper Deadband is 0 5K at each setpoint Set Point Contacts SPDT 28 volts dc or peak ac 0 25 amperes 3 watts max Specifications Models 817 and 818 Cryopump Monitors General Remote Interface 5232 3 wire output of temperature and alarm status and input output of setpoint values Dimensions Weight 105mm wide X 132mm high 4 125in X 5 25in DIN quarter rack panel 817 depth behind panel is 64mm 2 5in Weight is 0 9kg 2 Ib 818 depth is 117mm 4 6in Weight is 1 3kg 2 8 Ib Power 817 Unregulated dc between 8 5 and 18 volts 350 milliamps typical 818 90 125 or 210 250 Vac selected via rear panel switch 50 or 60 Hz 7 watts Connections 817 Board mounted post pins with mating connector supplied for sensor input set point contacts RS 232C output
30. feature two independent electronic alarms e Proven Silicon Diode Sensors which can be programmed to activate at any temperature within the unit s range Alarms can be set from either the e Interchangeable Sensors front panel or via interface and can be locked against PM unauthorized changes e RS 232C Digital Interface The primary difference in thetwo instruments is the power Analog Output Option 818 only they require for operation The 817 is designed for systems where a convenient source of dc power is available and e Model 817 for 9 18 Volt DC Power cost minimization is a factor The 818 is ac line operated e Model 818 for 110 220 AC Power and ideally suited for end user installation or retrofitting COPYRIGHT 1985 Lake Shore Cryotronics Inc Both an 817 and an 818 are shown mounted in the 8101 Rack Kit Up to four units can be installed in the 8101 and the assembly fits in a standard 57 4 19 rack space Specifications Models 817 and 818 Cryopump Monitors Input Characteristics Temperature Range 10 to 330K with standard DT 500DI 8B Sensor 4 to 330K with special DT 500 sensors See Response Curve Sensor order separately Lake Shore DT 500D1 8B Unit can be configured for special DT 500 sensors on quantity basis Sensor Input 2 terminal single sensor input Sensor Excitation Current source 10 microamperes Sensor Response Curve Standard units require Sensor Curve DI 8B Special curves uniqu
31. he first page of this manual 2 3 Power Requirements The Model 817 can be operated from an unregulated DC voltage between 8 5 and 18 volts The Model 818 can be operated from AC line voltages of 90 125 volts or 210 250 volts at line frequencies of 50 or 60 Hz CAUTION Verify that the 115 230 line voltage selection switch located on the rear panel of the Model 818 is set to the AC source voltage to be used Also ensure that the proper fuse is installed 2 4 Grounding To protect operating personnel the National Electrical Manufacturer s Association NEMA recommends and some local codes require instrument panels to be grounded The Model 818 is equipped with a three conductor power entry module which when used with the proper line cord and plugged into an appropriate receptacle grounds the instrument 2 5 Installation The Model 817 and Model 818 Cryopump Monitors are entirely solid state and do not generate significant heat They are designed to be rack mounted in dead air space and should not be subjected to temperatures outside of the specified operating environment temperature range Figure 2 1 illustrates the input and output configurations for each instrument 2 6 Repackaging for shipment If the Model 817 or Model 818 appears to be operating incorrectly please discuss the problem with a factory representative before returning the instrument He may be able to suggest several field tests which could avoid the unnecessa
32. oard Model 817 818 Display Board Schematic Diagram Display Board Component Layout Parts List Microprocessor Board Model 817 818 Microprocessor Board Schematic Diagram Microprocessor Board Component Layout Parts List Analog Input Board Model 817 818 Analog Input Board Schematic Diagram Analog Input Board Component Layout Parts List Power Supply Board Model 818 Power Supply Schematic Power Supply Component Layout Parts List Rear Panel Assembly Model 818 Parts List Final Assembly Model 817 Parts List Final Assembly Model 818 PAGE N 11 12 12 13 14 14 17 30 32 33 34 35 36 37 38 40 41 42 43 44 45 46 47 817 CRYOPUMP MONITOR 818 CRYOPUMP MONITOR CONTROL ALARM POINTS CONTROL ALARM POINTS v 51 Shore Cryotronics Shore Cryotronics Lake Shore Model 317 and 818 Cryopump Monitors SECTION I General Information 1 1 Introduction This section contains general information concerning the Lake Shore Cryotronics Inc Model 817 and Model 818 Cryopump Monitors Included are instrument descriptions specifications and information concerning the instruments and accessories 1 2 Description The Model 817 and Model 818 are microprocessor controlled instruments which provide direct digital display of the temperature in Kelvin of a single input sensor with 1 Kelvin resolution The specified range of the instruments is 4 to 330 Kelvin when used
33. on key for the proper alarm to be updated Refer to Figure 3 1 Notice that the display now indicates the alarm set point value 3 Use the up down arrow keys to count to the new set point value 4 Release the alarm set point function key and the new value will be stored in the nonvolatile memory The value will be saved when power to the unit is off 5 To disable the front panel up down keys remove the Set Point Disable jumper The function keys will still operate to allow checking of the values Be sure to keep the jumper for future use Table 3 2 Relay Truth Table Contact Positions Alarm 1 Alarm 2 Display Reading compared to Alarm 1 Alarm 2 N O CM N C CM Trower ort choses Chesca 9 3 7 SERIAL INTERFACE The Model 817 and Model 818 instruments feature a serial interface RS232C which allows the units to communicate to a host computer Table 3 3 RS232C Interface Specifications Timing Format Asynchoronous Transmission Mode Half Duplex Baud Rate 300 Bits per Character 7 not including start stop or parity bits Parity Type Odd Number of Stop Bits 1 Data Interface Levels Ov and Table 3 4 RS232C Commands and Format S Status Output Used to read the temperature alarm set points and relay status Format TEMP A1SP A2SP A1RS A2RS DELIMITERS XXX XXX XXX X X CR LF
34. r an input voltage of 1 000v and check against the display value If needed adjust the Temperature calibration adjustment 4 4 uble troubleshooting guide is given in Table 4 1 To properly use the guide locate the problem in the symptom column and perform the appropriate tests Corrective actions are given for the various possible causes Schematics and component layouts for the various PCB assemblies are given later in this section Symptom 1 No display Table 4 1 Troubleshooting Guide Possible Cause Corrective Action 1 2 3 4 2 Display reads 1 428 3 Display reads 1 OL 2 3 4 Displays incorrect 1 temperature 230 2 For Model 817 check to make sure there is at least 8 5V dc present on pin 1 of the input connector with respect to pin 2 Also make sure the wires are pressed firmly into the connector and the connector is pressed firmly into the unit For Model 818 check the line voltage selector for the proper line voltage being used Check the fuse to see if it has blown If so replace with the proper fuse value indicated on the rear panel For both units check to see if the wiring header to the 5 voltage regulator on the rear panel has come loose Check to see if 5V is present at pin 8 of Ul on the Analog Input Board If not replace the 5V regulator on the rear panel Check to see if 5V is present at pin 5 of Ul If not replace 01 Check
35. rve numbers 6 Connector for unregulated DC power sensor input alarm contacts and RS232C lines 7 Switch for 115 230 AC line voltage selection 8 Power entry module including fuse and power on off switch 9 Connector for sensor input alarm contacts and RS232C lines 10 Current source adjustment 11 Temperature calibration adjustment 12 Set Point Disable pins 13 Curve Select pins 3 3 Temperature Readout The DT 500 sensor should be connected as in Figure 2 2 Turn the power on and the digital display will indiaatae the proper temperature relative to the temperature where the sensor is installed 3 4 Standard Curves Standard curves are present in Table 3 5 Each table includes a list of PROM sensor voltages and breakpoints used in the linearization of the curve to arrive at the correct temperature to within the specified accuracy Each unit is supplied with four standard curves 0 DT 500DI 8B 1 DT 500DI 8A 2 DRC D 3 DRC E1 3 5 Multiple Curves If multiple curves where preprogrammed into the instrument use the following proceedure to select another curve 1 Using small pliers remove the jump jax jumper from the Set Point Disable pins Key 12 through the access hole in the top of the unit Refer to Figure 3 4 2 Place the jump jax on the Curve Select pins Key 13 and notice that the digital display now indicates the present curve number 3 Use the up down arrows to count to new curve number Refer
36. ry return of an instrument to the factory when the malfunction is elsewhere If these tests determine that the fault is in the instrument the representative will provide shipping and labeling instructions for returning it In order to expedite the repair of the instrument contact the factory for a Returned Goods Authorization RGA number Include the instrument s model and serial numbers in all written correspondence When returning an instrument please attach a tag securely to the instrument itself not on the shipping carton clearly stating Owner address and phone number B Instrument Model and Serial Numbers C Malfunction Symptoms D Description of External Connections and Cryostats E Returned Goods Authorization Number If the original carton is available repack the instument in a plastic bag place it in the carton using original spacers to protect protruding controls Seal the carton with strong paper or nylon tape Affix shipping labels and FRAGILE warnings If the original carton is not available pack the instrument similar to the above procedures being careful to use spacers or suitable packing material on all sides of the instrument Figure 2 1 Input and Output Configurations dx 1 145349 Model 817 Model 818 1 V input supply 1 Alarm 1 common 2 Ground supply RS232C 2 Alarm 2 common 3 I V sensor low 3 Alarm 2 normally closed 4 I V sensor high 4 Receive RS232C 5b No connection 5 L
37. t contacts RS 232C output and power in 818 14 pin D style con nector with mating connector supplied for inputs and outputs IEC 320 connector for power cord Options and Accessories Available MN Adds buffered output of Sensor voltage 818 only LA Adds 1mV K linearized analog output of temperature 818 only 8101 Rack Kit Provides rack mounting forup to four model 817s or 818s in standard 19 relay rack
38. to Figure 3 1 NOTE The unit will only count those curves available within the unit 4 Remove the jump jax from the Curve Select pins and place it back on the Set Point Disable pins At this time the display will again read temperature now calculated by the new curve The curve number will be stored in nonvolatile memory which is saved when power to the unit is removed 10 818 CRYOPUMP MONITOR CONTROL ALARM POINTS 1 91 Shore Cryotronics FIGURE 3 1 Typical Front Panel for Model 817 and 818 Lake Shore Cryotrontes Ing Westerville Ohio U S A 07012 FIGURE 3 2 Model 817 Rear Panel 11 Lake Shore Cryotromcs inc Westerville Onio U S A Lake Shore Cryotronics Inc Weslerville Ohio 07511 FIGURE 3 3 Model 817 Rear Panel lt J FIGURE 3 4 View of Model 817 and 818 6 a standard feature of the Model 817 and Model 818 is the capability to set two alarm trip points each activating a low power single pole double throw relay Refer to Figure 2 1 for proper pin out Table 1 1 for contact specifications and Table 3 2 for relay truth table Each alarm set point can be set from either the front panel keys or a remote computer Refer to programming instructions To set the alarm set point from the front panel use the following proceedure 1 Make sure the Set Point Disable jumper Key 12 is in place Refer to Figure 3 4 2 Press the alarm functi
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