SWB-2815 Overview
- Updated2023-02-20
- 8 minute(s) read
SWB-2815 Overview
SWB-2815 Pinout
Type A
| Signal | Description |
|---|---|
| ABx | Analog bus row connection |
| Cx | Column connection |
| GND | Safety interlock ground connection |
| INTRLK | Safety interlock resistor connection |
Type B
| Signal | Description |
|---|---|
| Cx | Column connection |
| GND | Safety interlock ground connection |
| INTRLK | Safety interlock resistor connection |
| — | No connection |
SWB-2015 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 4×86 Matrix |
| 2 | 1-Wire 4×172 Matrix |
| 3 | 1-Wire 4×258 Matrix |
| 4 | 1-Wire 4×344 Matrix |
| 5 | 1-Wire 4×430 Matrix |
| 6 | 1-Wire 4×516 Matrix |
1-Wire 4×86 Matrix
Module software name: Configured Topology (NISWITCH_TOPOLOGY_CONFIGURED_TOPOLOGY)
Hardware Diagram
Making a Connection
The immediate operation, the niSwitch Connect Channels VI or the niSwitch_Connect function with parameters card1r2 and c1 result in the following connection:
- signal connected to CARD1R2 is routed to C1
Relay Names
Refer to the following list for relay names of one module.
- kCARD1AB0
- kCARD1AB1
- kCARD1AB2
- kCARD1AB3
- kCARD1R0C0...kCARD1R0C85
- kCARD1R1C0...kCARD1R1C85
- kCARD1R2C0...kCARD1R2C85
- kCARD1R3C0...kCARD1R3C85
SWB-2815 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 and K53) | Tyco Electronics | 5-1462039-8 |
| Relay Kit | Part Number |
|---|---|
| National Instruments (10 matrix relays) | 781451-10 |
| National Instruments (10 safety relays) | 781089-10 |
Note The module has eight spare relays at locations K351 to K358 that can be used to
replace broken relays. Removing the spare relays does not change the functionality
of the module.
Complete the following sets of steps to locate and replace a failed relay.
Disassemble the Card
- 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.
- Locate the relay you want to replace. Refer to the following figure and table
for relay locations.
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 Name Reference Designator Relay Name Reference Designator Relay Name Reference Designator Relay Name Reference Designator kcard1ab0 K35 kcard1r0c83 K343 kcard1r1c84 K336 kcard1r2c85 K349 kcard1ab1 K17 kcard1r0c84 K335 kcard1r1c85 K348 kcard1r3c0 K4 kcard1ab2 K70 kcard1r0c85 K347 kcard1r2c0 K3 kcard1r3c1 K22 kcard1ab3 K52 kcard1r1c0 K2 kcard1r2c1 K21 kcard1r3c2 K8 kcard1r0c0 K1 kcard1r1c1 K20 kcard1r2c2 K7 kcard1r3c3 K26 kcard1r0c1 K19 kcard1r1c2 K6 kcard1r2c3 K25 kcard1r3c4 K12 kcard1r0c2 K5 kcard1r1c3 K24 kcard1r2c4 K11 kcard1r3c5 K30 kcard1r0c3 K23 kcard1r1c4 K10 kcard1r2c5 K29 kcard1r3c6 K16 kcard1r0c4 K9 kcard1r1c5 K28 kcard1r2c6 K15 kcard1r3c7 K34 kcard1r0c5 K27 kcard1r1c6 K14 kcard1r2c7 K33 kcard1r3c8 K39 kcard1r0c6 K13 kcard1r1c7 K32 kcard1r2c8 K38 kcard1r3c9 K57 kcard1r0c7 K31 kcard1r1c8 K37 kcard1r2c9 K56 kcard1r3c10 K43 kcard1r0c8 K36 kcard1r1c9 K55 kcard1r2c10 K42 kcard1r3c11 K61 kcard1r0c9 K54 kcard1r1c10 K41 kcard1r2c11 K60 kcard1r3c12 K47 kcard1r0c10 K40 kcard1r1c11 K59 kcard1r2c12 K46 kcard1r3c13 K65 kcard1r0c11 K58 kcard1r1c12 K45 kcard1r2c13 K64 kcard1r3c14 K51 kcard1r0c12 K44 kcard1r1c13 K63 kcard1r2c14 K50 kcard1r3c15 K69 kcard1r0c13 K62 kcard1r1c14 K49 kcard1r2c15 K68 kcard1r3c16 K74 kcard1r0c14 K48 kcard1r1c15 K67 kcard1r2c16 K73 kcard1r3c17 K90 kcard1r0c15 K66 kcard1r1c16 K72 kcard1r2c17 K89 kcard1r3c18 K78 kcard1r0c16 K71 kcard1r1c17 K88 kcard1r2c18 K77 kcard1r3c19 K94 kcard1r0c17 K87 kcard1r1c18 K76 kcard1r2c19 K93 kcard1r3c20 K82 kcard1r0c18 K75 kcard1r1c19 K92 kcard1r2c20 K81 kcard1r3c21 K98 kcard1r0c19 K91 kcard1r1c20 K80 kcard1r2c21 K97 kcard1r3c22 K86 kcard1r0c20 K79 kcard1r1c21 K96 kcard1r2c22 K85 kcard1r3c23 K102 kcard1r0c21 K95 kcard1r1c22 K84 kcard1r2c23 K101 kcard1r3c24 K106 kcard1r0c22 K83 kcard1r1c23 K100 kcard1r2c24 K105 kcard1r3c25 K122 kcard1r0c23 K99 kcard1r1c24 K104 kcard1r2c25 K121 kcard1r3c26 K110 kcard1r0c24 K103 kcard1r1c25 K120 kcard1r2c26 K109 kcard1r3c27 K126 kcard1r0c25 K119 kcard1r1c26 K108 kcard1r2c27 K125 kcard1r3c28 K114 kcard1r0c26 K107 kcard1r1c27 K124 kcard1r2c28 K113 kcard1r3c29 K130 kcard1r0c27 K123 kcard1r1c28 K112 kcard1r2c29 K129 kcard1r3c30 K118 kcard1r0c28 K111 kcard1r1c29 K128 kcard1r2c30 K117 kcard1r3c31 K134 kcard1r0c29 K127 kcard1r1c30 K116 kcard1r2c31 K133 kcard1r3c32 K138 kcard1r0c30 K115 kcard1r1c31 K132 kcard1r2c32 K137 kcard1r3c33 K154 kcard1r0c31 K131 kcard1r1c32 K136 kcard1r2c33 K153 kcard1r3c34 K142 kcard1r0c32 K135 kcard1r1c33 K152 kcard1r2c34 K141 kcard1r3c35 K158 kcard1r0c33 K151 kcard1r1c34 K140 kcard1r2c35 K157 kcard1r3c36 K146 kcard1r0c34 K139 kcard1r1c35 K156 kcard1r2c36 K145 kcard1r3c37 K162 kcard1r0c35 K155 kcard1r1c36 K144 kcard1r2c37 K161 kcard1r3c38 K150 kcard1r0c36 K143 kcard1r1c37 K160 kcard1r2c38 K149 kcard1r3c39 K166 kcard1r0c37 K159 kcard1r1c38 K148 kcard1r2c39 K165 kcard1r3c40 K170 kcard1r0c38 K147 kcard1r1c39 K164 kcard1r2c40 K169 kcard1r3c41 K186 kcard1r0c39 K163 kcard1r1c40 K168 kcard1r2c41 K185 kcard1r3c42 K174 kcard1r0c40 K167 kcard1r1c41 K184 kcard1r2c42 K173 kcard1r3c43 K190 kcard1r0c41 K183 kcard1r1c42 K172 kcard1r2c43 K189 kcard1r3c44 K178 kcard1r0c42 K171 kcard1r1c43 K188 kcard1r2c44 K177 kcard1r3c45 K194 kcard1r0c43 K187 kcard1r1c44 K176 kcard1r2c45 K193 kcard1r3c46 K182 kcard1r0c44 K175 kcard1r1c45 K192 kcard1r2c46 K181 kcard1r3c47 K198 kcard1r0c45 K191 kcard1r1c46 K180 kcard1r2c47 K197 kcard1r3c48 K202 kcard1r0c46 K179 kcard1r1c47 K196 kcard1r2c48 K201 kcard1r3c49 K218 kcard1r0c47 K195 kcard1r1c48 K200 kcard1r2c49 K217 kcard1r3c50 K206 kcard1r0c48 K199 kcard1r1c49 K216 kcard1r2c50 K205 kcard1r3c51 K222 kcard1r0c49 K215 kcard1r1c50 K204 kcard1r2c51 K221 kcard1r3c52 K210 kcard1r0c50 K203 kcard1r1c51 K220 kcard1r2c52 K209 kcard1r3c53 K226 kcard1r0c51 K219 kcard1r1c52 K208 kcard1r2c53 K225 kcard1r3c54 K214 kcard1r0c52 K207 kcard1r1c53 K224 kcard1r2c54 K213 kcard1r3c55 K230 kcard1r0c53 K223 kcard1r1c54 K212 kcard1r2c55 K229 kcard1r3c56 K234 kcard1r0c54 K211 kcard1r1c55 K228 kcard1r2c56 K233 kcard1r3c57 K250 kcard1r0c55 K227 kcard1r1c56 K232 kcard1r2c57 K249 kcard1r3c58 K238 kcard1r0c56 K231 kcard1r1c57 K248 kcard1r2c58 K237 kcard1r3c59 K254 kcard1r0c57 K247 kcard1r1c58 K236 kcard1r2c59 K253 kcard1r3c60 K242 kcard1r0c58 K235 kcard1r1c59 K252 kcard1r2c60 K241 kcard1r3c61 K258 kcard1r0c59 K251 kcard1r1c60 K240 kcard1r2c61 K257 kcard1r3c62 K246 kcard1r0c60 K239 kcard1r1c61 K256 kcard1r2c62 K245 kcard1r3c63 K262 kcard1r0c61 K255 kcard1r1c62 K244 kcard1r2c63 K261 kcard1r3c64 K266 kcard1r0c62 K243 kcard1r1c63 K260 kcard1r2c64 K265 kcard1r3c65 K282 kcard1r0c63 K259 kcard1r1c64 K264 kcard1r2c65 K281 kcard1r3c66 K270 kcard1r0c64 K263 kcard1r1c65 K280 kcard1r2c66 K269 kcard1r3c67 K286 kcard1r0c65 K279 kcard1r1c66 K268 kcard1r2c67 K285 kcard1r3c68 K274 kcard1r0c66 K267 kcard1r1c67 K284 kcard1r2c68 K273 kcard1r3c69 K290 kcard1r0c67 K283 kcard1r1c68 K272 kcard1r2c69 K289 kcard1r3c70 K278 kcard1r0c68 K271 kcard1r1c69 K288 kcard1r2c70 K277 kcard1r3c71 K294 kcard1r0c69 K287 kcard1r1c70 K276 kcard1r2c71 K293 kcard1r3c72 K298 kcard1r0c70 K275 kcard1r1c71 K292 kcard1r2c72 K297 kcard1r3c73 K314 kcard1r0c71 K291 kcard1r1c72 K296 kcard1r2c73 K313 kcard1r3c74 K302 kcard1r0c72 K295 kcard1r1c73 K312 kcard1r2c74 K301 kcard1r3c75 K318 kcard1r0c73 K311 kcard1r1c74 K300 kcard1r2c75 K317 kcard1r3c76 K306 kcard1r0c74 K299 kcard1r1c75 K316 kcard1r2c76 K305 kcard1r3c77 K322 kcard1r0c75 K315 kcard1r1c76 K304 kcard1r2c77 K321 kcard1r3c78 K310 kcard1r0c76 K303 kcard1r1c77 K320 kcard1r2c78 K309 kcard1r3c79 K326 kcard1r0c77 K319 kcard1r1c78 K308 kcard1r2c79 K325 kcard1r3c80 K330 kcard1r0c78 K307 kcard1r1c79 K324 kcard1r2c80 K329 kcard1r3c81 K342 kcard1r0c79 K323 kcard1r1c80 K328 kcard1r2c81 K341 kcard1r3c82 K334 kcard1r0c80 K327 kcard1r1c81 K340 kcard1r2c82 K333 kcard1r3c83 K346 kcard1r0c81 K339 kcard1r1c82 K332 kcard1r2c83 K345 kcard1r3c84 K338 kcard1r0c82 K331 kcard1r1c83 K344 kcard1r2c84 K337 kcard1r3c85 K350 - Remove the screws that hold one side of the insulator cover to the card.
1 Switch Module 3 Screws 2 Insulator Cover - 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.
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.
- Use screws to attach one side of the replacement insulator cover to the
card.
1 Switch Module 3 Screws 2 Insulator Cover - Lift the unattached side of the replacement insulator cover and remove the liner
from the adhesive strip.
1 Adhesive Strip 3 Switch Module 2 Insulator Cover - 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.