SWB-2814 Overview

SWB-2814 Pinout

Type A


1378

Table 1. Signal Descriptions
Signal Description
ABxW0 Wire 0 analog bus row connection
ABxW1 Wire 1 analog bus row connection
CxW0 Wire 0 column connection
CxW1 Wire 1 column connection
GND Safety interlock ground connection
INTRLK Safety interlock resistor connection
— No connection

Type B


1378

Table 2. Signal Descriptions
Signal Description
CxW0 Wire 0 column connection
CxW1 Wire 1 column connection
GND Safety interlock ground connection
INTRLK Safety interlock resistor connection
— No connection

SWB-2814 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 2-Wire 8×9 Matrix
2 2-Wire 8×18 Matrix
3 2-Wire 8×27 Matrix
4 2-Wire 8×36 Matrix
5 2-Wire 8×45 Matrix
6 2-Wire 8×54 Matrix

2-Wire 8×9 Matrix

Module software name: Configured Topology (NISWITCH_TOPOLOGY_CONFIGURED_TOPOLOGY)

Hardware Diagram


1378

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 CARD1R2W0 is routed to C1W0
  • signal connected to CARD1R2W1 is routed to C1W1

Relay Names

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

Note The relay names below do not designate the two wires as + and –. Instead they use W0 and W1 to designate wire 0 and wire 1.
  • kCARD1AB0W0...kCARD1AB7W0
  • kCARD1AB0W1...kCARD1AB7W1
  • kCARD1R0C0W0...kCARD1R0C8W0
  • kCARD1R0C0W1...kCARD1R0C8W1
  • kCARD1R1C0W0...kCARD1R1C8W0
  • kCARD1R1C0W1...kCARD1R1C8W1
  • kCARD1R2C0W0...kCARD1R2C8W0
  • kCARD1R2C0W1...kCARD1R2C8W1
  • kCARD1R3C0W0...kCARD1R3C8W0
  • kCARD1R3C0W1...kCARD1R3C8W1
  • kCARD1R4C0W0...kCARD1R4C8W0
  • kCARD1R4C0W1...kCARD1R4C8W1
  • kCARD1R5C0W0...kCARD1R5C8W0
  • kCARD1R5C0W1...kCARD1R5C8W1
  • kCARD1R6C0W0...kCARD1R6C8W0
  • kCARD1R6C0W1...kCARD1R6C8W1
  • kCARD1R7C0W0...kCARD1R7C8W0
  • kCARD1R7C0W1...kCARD1R7C8W1

SWB-2814 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 Meder MS05-BV50980
Safety (Reference Designators K15, K16, K45, K46, K74, K75, K104, and K105) Tyco Electronics 5-1462039-8
Relay Kit Part Number
National Instruments (10 matrix relays) 781450-10
National Instruments (10 safety relays) 781089-10

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

Locate the Relay

  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

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
kcard1ab0w0 K7 kcard1r1c3w0 K34 kcard1r3c5w0 K81 kcard1r5c7w0 K110
kcard1ab0w1 K14 kcard1r1c3w1 K41 kcard1r3c5w1 K88 kcard1r5c7w1 K117
kcard1ab1w0 K23 kcard1r1c4w0 K35 kcard1r3c6w0 K66 kcard1r5c8w0 K109
kcard1ab1w1 K30 kcard1r1c4w1 K42 kcard1r3c6w1 K72 kcard1r5c8w1 K116
kcard1ab2w0 K37 kcard1r1c5w0 K36 kcard1r3c7w0 K65 kcard1r6c0w0 K134
kcard1ab2w1 K44 kcard1r1c5w1 K43 kcard1r3c7w1 K71 kcard1r6c0w1 K141
kcard1ab3w0 K53 kcard1r1c6w0 K22 kcard1r3c8w0 K64 kcard1r6c1w0 K135
kcard1ab3w1 K60 kcard1r1c6w1 K29 kcard1r3c8w1 K70 kcard1r6c1w1 K142
kcard1ab4w0 K73 kcard1r1c7w0 K21 kcard1r4c0w0 K90 kcard1r6c2w0 K136
kcard1ab4w1 K82 kcard1r1c7w1 K28 kcard1r4c0w1 K97 kcard1r6c2w1 K143
kcard1ab5w0 K89 kcard1r1c8w0 K20 kcard1r4c1w0 K91 kcard1r6c3w0 K137
kcard1ab5w1 K96 kcard1r1c8w1 K27 kcard1r4c1w1 K98 kcard1r6c3w1 K144
kcard1ab6w0 K103 kcard1r2c0w0 K47 kcard1r4c2w0 K92 kcard1r6c4w0 K138
kcard1ab6w1 K112 kcard1r2c0w1 K54 kcard1r4c2w1 K99 kcard1r6c4w1 K145
kcard1ab7w0 K119 kcard1r2c1w0 K48 kcard1r4c3w0 K93 kcard1r6c5w0 K139
kcard1ab7w1 K126 kcard1r2c1w1 K55 kcard1r4c3w1 K100 kcard1r6c5w1 K146
kcard1r0c0w0 K1 kcard1r2c2w0 K49 kcard1r4c4w0 K94 kcard1r6c6w0 K148
kcard1r0c0w1 K8 kcard1r2c2w1 K56 kcard1r4c4w1 K101 kcard1r6c6w1 K155
kcard1r0c1w0 K2 kcard1r2c3w0 K50 kcard1r4c5w0 K95 kcard1r6c7w0 K149
kcard1r0c1w1 K9 kcard1r2c3w1 K57 kcard1r4c5w1 K102 kcard1r6c7w1 K156
kcard1r0c2w0 K3 kcard1r2c4w0 K51 kcard1r4c6w0 K106 kcard1r6c8w0 K150
kcard1r0c2w1 K10 kcard1r2c4w1 K58 kcard1r4c6w1 K113 kcard1r6c8w1 K157
kcard1r0c3w0 K4 kcard1r2c5w0 K52 kcard1r4c7w0 K107 kcard1r7c0w0 K162
kcard1r0c3w1 K11 kcard1r2c5w1 K59 kcard1r4c7w1 K114 kcard1r7c0w1 K163
kcard1r0c4w0 K5 kcard1r2c6w0 K61 kcard1r4c8w0 K108 kcard1r7c1w0 K164
kcard1r0c4w1 K12 kcard1r2c6w1 K67 kcard1r4c8w1 K115 kcard1r7c1w1 K165
kcard1r0c5w0 K6 kcard1r2c7w0 K62 kcard1r5c0w0 K120 kcard1r7c2w0 K166
kcard1r0c5w1 K13 kcard1r2c7w1 K68 kcard1r5c0w1 K127 kcard1r7c2w1 K167
kcard1r0c6w0 K17 kcard1r2c8w0 K63 kcard1r5c1w0 K121 kcard1r7c3w0 K161
kcard1r0c6w1 K24 kcard1r2c8w1 K69 kcard1r5c1w1 K128 kcard1r7c3w1 K168
kcard1r0c7w0 K18 kcard1r3c0w0 K76 kcard1r5c2w0 K122 kcard1r7c4w0 K147
kcard1r0c7w1 K25 kcard1r3c0w1 K83 kcard1r5c2w1 K129 kcard1r7c4w1 K154
kcard1r0c8w0 K19 kcard1r3c1w0 K77 kcard1r5c3w0 K123 kcard1r7c5w0 K133
kcard1r0c8w1 K26 kcard1r3c1w1 K84 kcard1r5c3w1 K130 kcard1r7c5w1 K140
kcard1r1c0w0 K31 kcard1r3c2w0 K78 kcard1r5c4w0 K124 kcard1r7c6w0 K153
kcard1r1c0w1 K38 kcard1r3c2w1 K85 kcard1r5c4w1 K131 kcard1r7c6w1 K160
kcard1r1c1w0 K32 kcard1r3c3w0 K79 kcard1r5c5w0 K125 kcard1r7c7w0 K152
kcard1r1c1w1 K39 kcard1r3c3w1 K86 kcard1r5c5w1 K132 kcard1r7c7w1 K159
kcard1r1c2w0 K33 kcard1r3c4w0 K80 kcard1r5c6w0 K111 kcard1r7c8w0 K151
kcard1r1c2w1 K40 kcard1r3c4w1 K87 kcard1r5c6w1 K118 kcard1r7c8w1 K158

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.