SWB-2816 Overview

SWB-2816 Pinout

Type A


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Table 1. Signal Descriptions
Signal Description
ABx Analog bus row connection
Cx Column connection
GND Safety interlock ground connection
INTRLK Safety interlock resistor connection
No connection

Type B


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Table 2. Signal Descriptions
Signal Description
Cx Column connection
GND Safety interlock ground connection
INTRLK Safety interlock resistor connection
No connection

SWB-2816 Topology

Multiple modules of the same type can be combined. The following table lists possible topologies.

Note You must connect pin 96 (INTERLOCK ENABLE) to pin 48 (GND) with a 500 Ω resistor (500 Ω ±20%, 1/10 W minimum) to allow connection to the analog bus. Refer to the NI SwitchBlock Safety Interlock topic for additional information about this safety feature.
Number of Modules Topology
1 1-Wire 8×46 Matrix
2 1-Wire 8×92 Matrix
3 1-Wire 8×138 Matrix
4 1-Wire 8×184 Matrix
5 1-Wire 8×230 Matrix
6 1-Wire 8×276 Matrix

1-Wire 86×4 Matrix

Module software name: Configured Topology (NISWITCH_TOPOLOGY_CONFIGURED_TOPOLOGY)

Hardware Diagram


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Making a Connection

The immediate operation, the niSwitch Connect Channels VI or the niSwitch_Connect function with parameters card1r1 and c1 result in the following connection:

  • signal connected to CARD1R1 is routed to C1

Relay Names

Refer to the following list for relay names of one module.

  • kCARD1AB0
  • kCARD1AB1
  • kCARD1AB2
  • kCARD1AB3
  • kCARD1AB4
  • kCARD1AB5
  • kCARD1AB6
  • kCARD1AB7
  • kCARD1R0C0...kCARD1R0C45
  • kCARD1R1C0...kCARD1R1C45
  • kCARD1R2C0...kCARD1R2C45
  • kCARD1R3C0...kCARD1R3C45
  • kCARD1R4C0...kCARD1R4C45
  • kCARD1R5C0...kCARD1R5C45
  • kCARD1R6C0...kCARD1R6C45
  • kCARD1R7C0...kCARD1R7C45

SWB-2816 Relay Replacement

The module uses reed relays.

Note The module uses a custom lead length to meet safety standards. Trim leads per rework instructions or use one of the custom relays from the relay kit.
Relay Relay Manufacturer Part Number
Matrix Coto 9117-0001
Safety (Reference Designators K18, K53, K168, and K283) Tyco Electronics 5-1462039-8
Relay Kit Part Number
National Instruments (10 matrix relays) 781451-10
National Instruments (10 safety relays) 781089-10

Complete the following sets of steps to locate and replace a failed relay.

Disassemble the Card

  1. Ground yourself using a grounding strap or a ground connected to your PXI chassis.
    Note Properly grounding yourself prevents damage to your module from electrostatic discharge.
  2. Locate the relay you want to replace. Refer to the following figure and table for relay locations.
    1378

    Note The insulator cover attaches to the two rightmost columns of matrix relays, outlined in bold on the relay map, and must be removed to replace these relays. You can replace these relays and the insulator cover by sending the card to National Instruments for a rework return material authorization (RMA) or by following the instructions in the relay replacement procedure.
    Note The relay names in the following table correspond to a single-card device.
    Relay NameReference DesignatorRelay NameReference DesignatorRelay NameReference DesignatorRelay NameReference Designator
    kcard1ab0K35kcard1r1c40K333kcard1r3c42K351kcard1r5c44K375
    kcard1ab1K17kcard1r1c41K334kcard1r3c43K352kcard1r5c45K376
    kcard1ab2K70kcard1r1c42K349kcard1r3c44K367kcard1r6c0K13
    kcard1ab3K52kcard1r1c43K350kcard1r3c45K368kcard1r6c1K14
    kcard1ab4K185kcard1r1c44K365kcard1r4c0K9kcard1r6c2K31
    kcard1ab5K167kcard1r1c45K366kcard1r4c1K10kcard1r6c3K32
    kcard1ab6K300kcard1r2c0K7kcard1r4c2K27kcard1r6c4K48
    kcard1ab7K282kcard1r2c1K8kcard1r4c3K28kcard1r6c5K49
    kcard1r0c0K5kcard1r2c2K25kcard1r4c4K44kcard1r6c6K66
    kcard1r0c1K6kcard1r2c3K26kcard1r4c5K45kcard1r6c7K67
    kcard1r0c2K23kcard1r2c4K42kcard1r4c6K62kcard1r6c8K83
    kcard1r0c3K24kcard1r2c5K43kcard1r4c7K63kcard1r6c9K84
    kcard1r0c4K40kcard1r2c6K60kcard1r4c8K79kcard1r6c10K99
    kcard1r0c5K41kcard1r2c7K61kcard1r4c9K80kcard1r6c11K100
    kcard1r0c6K58kcard1r2c8K77kcard1r4c10K95kcard1r6c12K115
    kcard1r0c7K59kcard1r2c9K78kcard1r4c11K96kcard1r6c13K116
    kcard1r0c8K75kcard1r2c10K93kcard1r4c12K111kcard1r6c14K131
    kcard1r0c9K76kcard1r2c11K94kcard1r4c13K112kcard1r6c15K132
    kcard1r0c10K91kcard1r2c12K109kcard1r4c14K127kcard1r6c16K147
    kcard1r0c11K92kcard1r2c13K110kcard1r4c15K128kcard1r6c17K148
    kcard1r0c12K107kcard1r2c14K125kcard1r4c16K143kcard1r6c18K163
    kcard1r0c13K108kcard1r2c15K126kcard1r4c17K144kcard1r6c19K164
    kcard1r0c14K123kcard1r2c16K141kcard1r4c18K159kcard1r6c20K181
    kcard1r0c15K124kcard1r2c17K142kcard1r4c19K160kcard1r6c21K182
    kcard1r0c16K139kcard1r2c18K157kcard1r4c20K177kcard1r6c22K198
    kcard1r0c17K140kcard1r2c19K158kcard1r4c21K178kcard1r6c23K199
    kcard1r0c18K155kcard1r2c20K175kcard1r4c22K194kcard1r6c24K214
    kcard1r0c19K156kcard1r2c21K176kcard1r4c23K195kcard1r6c25K215
    kcard1r0c20K173kcard1r2c22K192kcard1r4c24K210kcard1r6c26K230
    kcard1r0c21K174kcard1r2c23K193kcard1r4c25K211kcard1r6c27K231
    kcard1r0c22K190kcard1r2c24K208kcard1r4c26K226kcard1r6c28K246
    kcard1r0c23K191kcard1r2c25K209kcard1r4c27K227kcard1r6c29K247
    kcard1r0c24K206kcard1r2c26K224kcard1r4c28K242kcard1r6c30K262
    kcard1r0c25K207kcard1r2c27K225kcard1r4c29K243kcard1r6c31K263
    kcard1r0c26K222kcard1r2c28K240kcard1r4c30K258kcard1r6c32K278
    kcard1r0c27K223kcard1r2c29K241kcard1r4c31K259kcard1r6c33K279
    kcard1r0c28K238kcard1r2c30K256kcard1r4c32K274kcard1r6c34K296
    kcard1r0c29K239kcard1r2c31K257kcard1r4c33K275kcard1r6c35K297
    kcard1r0c30K254kcard1r2c32K272kcard1r4c34K292kcard1r6c36K313
    kcard1r0c31K255kcard1r2c33K273kcard1r4c35K293kcard1r6c37K314
    kcard1r0c32K270kcard1r2c34K290kcard1r4c36K309kcard1r6c38K329
    kcard1r0c33K271kcard1r2c35K291kcard1r4c37K310kcard1r6c39K330
    kcard1r0c34K288kcard1r2c36K307kcard1r4c38K325kcard1r6c40K345
    kcard1r0c35K289kcard1r2c37K308kcard1r4c39K326kcard1r6c41K346
    kcard1r0c36K305kcard1r2c38K323kcard1r4c40K341kcard1r6c42K361
    kcard1r0c37K306kcard1r2c39K324kcard1r4c41K342kcard1r6c43K362
    kcard1r0c38K321kcard1r2c40K339kcard1r4c42K357kcard1r6c44K377
    kcard1r0c39K322kcard1r2c41K340kcard1r4c43K358kcard1r6c45K378
    kcard1r0c40K337kcard1r2c42K355kcard1r4c44K373kcard1r7c0K16
    kcard1r0c41K338kcard1r2c43K356kcard1r4c45K374kcard1r7c1K15
    kcard1r0c42K353kcard1r2c44K371kcard1r5c0K11kcard1r7c2K34
    kcard1r0c43K354kcard1r2c45K372kcard1r5c1K12kcard1r7c3K33
    kcard1r0c44K369kcard1r3c0K3kcard1r5c2K29kcard1r7c4K51
    kcard1r0c45K370kcard1r3c1K4kcard1r5c3K30kcard1r7c5K50
    kcard1r1c0K1kcard1r3c2K21kcard1r5c4K46kcard1r7c6K69
    kcard1r1c1K2kcard1r3c3K22kcard1r5c5K47kcard1r7c7K68
    kcard1r1c2K19kcard1r3c4K38kcard1r5c6K64kcard1r7c8K86
    kcard1r1c3K20kcard1r3c5K39kcard1r5c7K65kcard1r7c19K85
    kcard1r1c4K36kcard1r3c6K56kcard1r5c8K81kcard1r7c10K102
    kcard1r1c5K37kcard1r3c7K57kcard1r5c9K82kcard1r7c11K101
    kcard1r1c6K54kcard1r3c8K73kcard1r5c10K97kcard1r7c12K118
    kcard1r1c7K55kcard1r3c9K74kcard1r5c11K98kcard1r7c13K117
    kcard1r1c8K71kcard1r3c10K89kcard1r5c12K113kcard1r7c14K134
    kcard1r1c9K72kcard1r3c11K90kcard1r5c13K114kcard1r7c15K133
    kcard1r1c10K87kcard1r3c12K105kcard1r5c14K129kcard1r7c16K150
    kcard1r1c11K88kcard1r3c13K106kcard1r5c15K130kcard1r7c17K149
    kcard1r1c12K103kcard1r3c14K121kcard1r5c16K145kcard1r7c18K165
    kcard1r1c13K104kcard1r3c15K122kcard1r5c17K146kcard1r7c19K166
    kcard1r1c14K119kcard1r3c16K137kcard1r5c18K161kcard1r7c20K183
    kcard1r1c15K120kcard1r3c17K138kcard1r5c19K162kcard1r7c21K184
    kcard1r1c16K135kcard1r3c18K153kcard1r5c20K179kcard1r7c22K200
    kcard1r1c17K136kcard1r3c19K154kcard1r5c21K180kcard1r7c23K201
    kcard1r1c18K151kcard1r3c20K171kcard1r5c22K196kcard1r7c24K216
    kcard1r1c19K152kcard1r3c21K172kcard1r5c23K197kcard1r7c25K217
    kcard1r1c20K169kcard1r3c22K188kcard1r5c24K212kcard1r7c26K232
    kcard1r1c21K170kcard1r3c23K189kcard1r5c25K213kcard1r7c27K233
    kcard1r1c22K186kcard1r3c24K204kcard1r5c26K228kcard1r7c28K249
    kcard1r1c23K187kcard1r3c25K205kcard1r5c27K229kcard1r7c29K248
    kcard1r1c24K202kcard1r3c26K220kcard1r5c28K244kcard1r7c30K264
    kcard1r1c25K203kcard1r3c27K221kcard1r5c29K245kcard1r7c31K265
    kcard1r1c26K218kcard1r3c28K236kcard1r5c30K260kcard1r7c32K281
    kcard1r1c27K219kcard1r3c29K237kcard1r5c31K261kcard1r7c33K280
    kcard1r1c28K234kcard1r3c30K252kcard1r5c32K276kcard1r7c34K299
    kcard1r1c29K235kcard1r3c31K253kcard1r5c33K277kcard1r7c35K298
    kcard1r1c30K250kcard1r3c32K268kcard1r5c34K294kcard1r7c36K315
    kcard1r1c31K251kcard1r3c33K269kcard1r5c35K295kcard1r7c37K316
    kcard1r1c32K266kcard1r3c34K286kcard1r5c36K311kcard1r7c38K331
    kcard1r1c33K267kcard1r3c35K287kcard1r5c37K312kcard1r7c39K332
    kcard1r1c34K284kcard1r3c36K303kcard1r5c38K327kcard1r7c40K347
    kcard1r1c35K285kcard1r3c37K304kcard1r5c39K328kcard1r7c41K348
    kcard1r1c36K301kcard1r3c38K319kcard1r5c40K343kcard1r7c42K363
    kcard1r1c37K302kcard1r3c39K320kcard1r5c41K344kcard1r7c43K364
    kcard1r1c38K317kcard1r3c40K335kcard1r5c42K359kcard1r7c44K379
    kcard1r1c39K318kcard1r3c41K336kcard1r5c43K360kcard1r7c45K380
  3. Remove the screws that hold one side of the insulator cover to the card.
    1378

    1 Switch Module 3 Screws
    2 Insulator Cover
  4. Lift the insulator cover to access the relays. To replace a relay in one of the two rightmost columns of matrix relays, carefully peel the adhesive strip of the insulator cover off of these two columns of relays.
    1378

    1 Switch Module
    2 Insulator Cover

Replace the Relay

The module uses lead-free assemblies.

Note NI recommends using lead-free solder for relay replacement on lead-free assemblies, and lead solder for relay replacement on lead assemblies.
Note Do not rework lead assemblies using a lead-free work station. Lead solder from the unit could contaminate the station.
Note If a lead-free assembly is reworked with lead solder, label the assembly to indicate this condition. This rework can prevent the same unit from being reworked later on a lead-free solder station, because it could contaminate the station.

Make sure that you have the following items:

  • Temperature-regulated soldering iron set to 371 °C (700 °F) for lead-free solder rework
  • 96.5/3.0/0.5 Tin/Silver/Copper solder (flux core) for lead-free solder rework
  • Solder wick
  • Fine pick
  • Isopropyl alcohol
  • Cotton swabs

Replace the relay as you would any other through-hole part. Trim the replaced relay leads to no more than 0.5 mm (0.02 inch) from the PCB.

Note You can use the Switch Soft Front Panel to reset the relay count after you have replaced a failed relay.

Reassemble the Card

Refer to one of the following procedures to reassemble your card after replacing any relays.

Reassembly If Insulator Cover Was Not Removed

If you only replaced relays outside of the two rightmost columns of matrix relays, and therefore did not remove the adhesive strip of the insulator cover, complete Disassemble the Card in reverse order to reassemble your card.

Reassembly If Insulator Cover Was Removed

If you removed the insulator cover, including the adhesive strip, to replace a relay in one of the two rightmost columns of matrix relays, complete the following steps to reassemble your card.

  1. Use screws to attach one side of the replacement insulator cover to the card.
    1378

    1 Switch Module 3 Screws
    2 Insulator Cover
  2. Lift the unattached side of the replacement insulator cover and remove the liner from the adhesive strip.
    1378

    1 Adhesive Strip3 Switch Module
    2 Insulator Cover
  3. Firmly press the adhesive strip on top of the two rightmost columns of matrix relays.
Note You can use the Switch Soft Front Panel to reset the relay count after you have replaced a failed relay. Refer to the Switch Soft Front Panel Help for more information.