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Service Information

6-14

Troubleshooting procedure

Table 6-4 summarizes relay-digital I/O card troubleshooting.

Table 6-4

Troubleshooting procedure

Step

Item/Component

Required Condition

Comments

GND pad

All voltages referenced to digital ground

(GND pad).

Q100, pin 2

+6VDC

Relay voltage.

U101, pin 16

+5VDC

Logic voltage.

R135

+15VDC

Relay bias voltage.

Q100, pin 3

+3.5VDC*

Regulated relay voltage.

U110, pin 6

IDCLK pulses

During power-up only.

U110, pin 5

IDDATA pulses

During power-up only.

U106, pin 7

STROBE pulse

End of relay update sequence.

U106, pin 2

CLK pulses

During relay update sequence only.

U106, pin 3

DATA pulses

During relay update sequence only.

U105-U109, pins 10-18

Low with relay energized; high

with relay de-energized.

Relay driver outputs.

*+3.5VDC present at +V pad under steady-state conditions. This voltage rises to +5.7VDC for about 100msec when relay configurat on is changed.

Содержание 7037

Страница 1: ...nual Contains Operating and Servicing Information Model 7037 Single Pole Relay Digital I O Card 7037 901 01 Rev A 5 97 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 TestEquip...

Страница 2: ...WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE THE REMEDIES PROVIDED HEREIN ARE BUYER S SOLE AND EXCLUSIVE REMEDIES NEITHER KEITHLEY INSTRUMENTS INC NOR ANY OF ITS EMPLOYEES SHALL BE LIAB...

Страница 3: ...Model 7037 Single Pole Relay Digital I O Card Instruction Manual 1997 Keithley Instruments Inc All rights reserved Cleveland Ohio U S A First Printing May 1997 Document Number 7037 901 01 Rev A...

Страница 4: ...orporate immediately into the manual Addenda are num bered sequentially When a new Revision is created all Addenda associated with the previous Revision of the manual are incorporated into the new Rev...

Страница 5: ...voltage is present in any unknown circuit before measuring Users of this product must be protected from electric shock at all times The responsible body must ensure that users are prevented access and...

Страница 6: ...result in personal injury or death Always read the associated infor mation very carefully before performing the indicated procedure The CAUTION heading in a manual explains hazards that could damage...

Страница 7: ......

Страница 8: ...spection for damage 1 2 Handling precautions 1 2 Shipping contents 1 2 Instruction manual 1 3 Repacking for shipment 1 3 Optional accessories 1 3 2 Relay Switch Configuration Introduction 2 1 Basic sw...

Страница 9: ...s 4 11 Input connection scheme 4 12 Model 7037 installation and removal 4 13 Card installation 4 13 Card removal 4 13 5 Operation Introduction 5 1 Power limits 5 1 Digital I O maximum signal levels 5...

Страница 10: ...ionality test 6 9 Special handling of static sensitive devices 6 9 Principles of operation 6 10 Block diagram 6 10 ID data circuits 6 11 Relay control 6 12 Relay power control 6 12 Digital I O output...

Страница 11: ...re 4 4 Digital I O output logic location 4 4 Figure 4 5 Digital I O output logic selection 4 4 Figure 4 6 Digital I O input pull up resistance selection 4 5 Figure 4 7 Multi pin connector card termina...

Страница 12: ...8 Figure 5 8 Voltage attenuation by path isolation resistance 5 8 Figure 5 9 Power line ground loops 5 9 Figure 5 10 Eliminating ground loops 5 9 6 Service Information Figure 6 1 Channel resistance te...

Страница 13: ...e 6 1 Verification equipment 6 2 Table 6 2 Channel to channel isolation tests 6 7 Table 6 3 Recommended troubleshooting equipment 6 13 Table 6 4 Troubleshooting procedure 6 14 7 Replaceable Parts Tabl...

Страница 14: ...packing and inspection Repacking for shipment Optional accessories Features The Model 7037 has 30 independent channels of single pole switching It also has ten independent inputs and outputs for digit...

Страница 15: ...sult in personal injury or death Always read the associated information very carefully before per forming the indicated procedure The CAUTION heading used in this manual explains haz ards that could d...

Страница 16: ...urn the Model 7037 for repair carefully pack the unit in its original packing carton or the equivalent and include the following information Advise as to the warranty status of the card Write ATTENTIO...

Страница 17: ...itch configuration SPST A simplified schematic of the Model 7037 relay switch con figuration is shown in Figure 2 1 The card has 30 indepen dent channels Each channel is made up of a single pole singl...

Страница 18: ...ntrolling pull up devices Typically the digital outputs are used to provide drive for rel atively high current devices such as solenoids relays and small motors The configurations for these applicatio...

Страница 19: ...up resistor R1 The pull up resistors can be pulled up to 5V or pulled down to ground depending on the positioning of the jumper on the input logic bank Refer to Section 4 for more information Figure...

Страница 20: ...ce of the card Digital I O connections Explains the voltage source jumpers pull up resistors output logic and input resis tance and how to configure them Multi pin mass termination connector card Cov...

Страница 21: ...nections Voltage source jumper Digital output high uses the internal 5V source as the high logic level If higher voltages are required a user supplied voltage can be used 42V maximum At the factory th...

Страница 22: ...nd Installation 4 3 Figure 4 2 Component locations connector board Figure 4 3 Voltage source jumper installation U203 U201 U202 J201 Vext 5V Jumper 5V VEXT A 5V Source Selected Jumper 5V VEXT B Extern...

Страница 23: ...ocation Figure 4 5 Digital I O output logic selection Configuring digital I O input pull up resistance Referring to Figure 4 4 for digital I O input pull up resis tance location perform the following...

Страница 24: ...s from the connector card to test instrumentation and DUTs devices under test In general these accessories which are summarized in Table 4 1 utilize a round cable assembly for connections Terminal ide...

Страница 25: ...4b 35 38 6b 36 40 8b 37 66 2c 38 68 4c 39 70 6c 40 72 8c 34 2b 2 2a Relay Channel 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Schematic Designator Schematic Connec...

Страница 26: ...b 7 35 Chan 6 IN OUT 14b 14a 46 14 Chan 22 IN OUT 25c 25b 89 57 DIG IN 5 DIG IN 6 5b 7b 37 39 Chan 7 IN OUT 15c 15b 79 47 Chan 23 IN OUT 24c 27a 88 27 DIG IN 7 DIG IN 8 1c 3c 65 67 Chan 8 IN OUT 14c 1...

Страница 27: ...r the Model 7037 is installed in the Model 7001 7002 mainframe and with the mainframe power off Installation is covered at the end of this section Round cable assemblies Figure 4 8 shows typical round...

Страница 28: ...uld be used for a second card In Figure 4 8C connections are accomplished using a custom built cable assembly that consists of a Model 7011 KIT R connector and a suitable round cable Hitachi cable par...

Страница 29: ...ices and power supplies The other end will mate to the Model 7037 card Connection details are provided in the Multi pin mass termination con nections paragraph If adding more Model 7037 cards to a sys...

Страница 30: ...his example assumes that an external 24V source is being used A solenoid is ener gized when the corresponding output channel is turned on closed Figure 4 12 Digital output solenoid control Motor contr...

Страница 31: ...by the internal input resistor As a result the input channel is high appears as a bar on the Model 7001 display or a lit LED on the Model 7002 When a switch is closed the corre sponding input channel...

Страница 32: ...f the card to secure the assembly Make sure to handle the cards by the edges and shields to prevent contamination 2 Facing the rear panel of the mainframe select the slot CARD 1 or CARD 2 that you wan...

Страница 33: ...Card Connections and Installation 4 14...

Страница 34: ...ds be sure to use voltage clamping and cur rent limiting as explained in the Reac tive loads paragraph Digital I O maximum signal levels Output channels Maximum user supplied pull up voltage 42V Maxim...

Страница 35: ...the Model 7037 card It assumes you are familiar with the operation of the Model 7001 7002 mainframe If you are not familiar with the operation of the mainframe it is recommended that you proceed to G...

Страница 36: ...igure 5 4 Organization of the channel status display for each slot is shown in Figure 5 5 The card contains 40 channels and is made up of 30 independent channels of one pole switching and ten digital...

Страница 37: ...ard are provided in Figure 5 6 Each channel assignment is made up of the slot designator 1 or 2 and the relay or digital output channel For the Model 7002 the slot designator can be from 1 to 10 since...

Страница 38: ...the instruction manual for the mainframe and for information on definin channel patterns Scanning channels Channels are scanned by creating a scan list and configurin the Model 7001 7002 to perform a...

Страница 39: ...pment Corpo ration IEEE interface and the HP style Universal Language Driver CECHP Refer to QuickBASIC 4 5 Programming in the mainframe manual for details on installing the Univer sal Language Driver...

Страница 40: ...put channels slot 3 SENSe5 DATA list Read input channels slot 4 SENSe6 DATA list Read input channels slot 5 SENSe7 DATA list Read input channels slot 6 SENSe8 DATA list Read input channels slot 7 SENS...

Страница 41: ...cy Thus it is often important that such capacitance be kept as low as possible Although the distributed capacitance of the card is generally fi ed by design there is one area where you do have control...

Страница 42: ...a specially constructed screen room may be required to sufficiently attenuate the troublesome signal Many instruments incorporate internal filtering that may help to reduce RFI effects in some situati...

Страница 43: ...su lators reducing their resistance Also contaminants present in the air can be deposited on the insulator surface To avoid these problems never touch the connector insulating mate rial In addition th...

Страница 44: ...ubleshooting tips for the card Handling and cleaning precautions Because of the high impedance circuits on the Model 7037 care should be taken when handling or servicing the card to prevent possible c...

Страница 45: ...s All verification measurements should be made at an ambient temperature between 18 and 28 C and at a relative humid ity of less than 70 Recommended equipment Table 6 1 summarizes the equipment necess...

Страница 46: ...quirements Channel resistance tests Referring to Figure 6 1 perform the following steps to verify that each contact of every relay is closing properly and that the resistance is within specification 1...

Страница 47: ...ero correct the instrument Leave zero correct enabled for the entire procedure 5 Turn on the Model 7001 7002 6 Program the Model 7001 7002 to close channel 1 1 7 On the Model 6517A disable zero check...

Страница 48: ...ment is the contact potential of the channel 8 Repeat the basic procedure in steps 1 through 7 to test the rest of the channels of the Model 7037 Channel to channel isolation tests These tests check t...

Страница 49: ...6517A voltage source 11 Turn off the Model 7001 7002 12 Disconnect the Model 6517A from channels 1 and 2 and in a similar manner reconnect it to channels 2 and 3 electrometer high to channel 2 and vol...

Страница 50: ...Channel 14 Channels 13 and 14 1 13 and 1 14 14 Channel 14 to Channel 15 Channels 14 and 15 1 14 and 1 15 15 Channel 15 to Channel 16 Channels 15 and 16 1 15 and 1 16 16 Channel 16 to Channel 17 Chann...

Страница 51: ...On the Model 6517A select the ohms function and choose the 2G range 5 On the Model 6517A set the voltage source for 100V Make sure the voltage source is still off 6 Place the Model 6517A in the R meas...

Страница 52: ...nd other high impedance devices are subject to pos sible static discharge damage because of the high impedance levels involved The following precautions pertain specifi cally to static sensitive devic...

Страница 53: ...drivers and relays digital I O output channel drivers and digital I O input channel registers These various elements are discussed in the following paragraphs Figure 6 7 Model 7037 block diagram To Ma...

Страница 54: ...e 6 8 2 The mainframe sends the ROM address location to be read over the IDDATA line The ROM then transmits an acknowledge signal back to the mainframe and it then transmits data at that location back...

Страница 55: ...information into the Q outputs of the output channel drivers Note that a channel driver output can go low or high when it is turned on closed depending on its logic configuration Digital I O input cha...

Страница 56: ...empt ing to remove a relay use an appropri ate de soldering tool such as a solder sucker to clear each mounting hole completely free of solder Each relay pin must be free to move in its mounting hole...

Страница 57: ...e 5 Q100 pin 3 3 5VDC Regulated relay voltage 6 U110 pin 6 IDCLK pulses During power up only 7 U110 pin 5 IDDATA pulses During power up only 8 U106 pin 7 STROBE pulse End of relay update sequence 9 U1...

Страница 58: ...Keithley part number Factory service If the card is to be returned to Keithley Instruments for repair perform the following 1 Complete the service form at the back of this manual and include it with...

Страница 59: ...28 J100 101 CONN BERG CS 339 J1002 1003 CONN 48 PIN 3 ROW CS 736 2 K100 129 RELAY ULTRA SMALL POLARIZED TF2E 5V RL 149 P2001 CONN 32 PIN 2 ROW CS 775 1 Q100 TRANS NPN PWR TIP31 T0 220AB TG 253 Q101 T...

Страница 60: ...7011 307 CONN JUMPER FOR J201 CS 476 SHIELD 7011 311A STANDOFF ST 203 1 C201 203 CAP 0 1 F 20 50V CERAMIC C 365 1 J201 CONN BERG CS 339 J202 203 CONNECTOR SHIM 7011 309A J1004 CONN 96 PIN 3 ROW CS 514...

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Страница 66: ...THLEY INSTRUMENTS INC KEITHLEY DO NOT SCALE THIS DRAWING APPR D R N SCALE DATE P G TITLE NO C DATE ENG REVISION ECA NO LTR 1 1 A B C D D C B A 4 3 2 4 3 2 CAB 1 6 97 1 1 COMPONENT LAYOUT CONNECTOR BOA...

Страница 67: ......

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Страница 69: ...I O connections 4 2 Digital I O input channel control 6 12 Digital I O maximum signal levels 5 1 Digital I O output channel control 6 12 Digital inputs 3 2 Digital outputs 3 1 E Environmental conditi...

Страница 70: ...ol 6 12 Relay switch maximum signal levels 5 1 Repacking for shipment 1 3 S Safety symbols and terms 1 2 Scanning channels 5 5 Shipping contents 1 2 Special handling of static sensitive devices 6 9 Sp...

Страница 71: ...nstable Will not read applied input Overload Calibration only Certificate of calibration require Data required attach any additional sheets as necessary Show a block diagram of your measurement system...

Страница 72: ...Keithley Instruments Inc 28775 Aurora Road Cleveland Ohio 44139 Printed in the U S A...

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