NI PXI-2571 Relay Replacement
- Updated2025-01-20
- 2 minute(s) read
The NI PXI-2571 uses electromechanical armature relays.
Refer to the following table for information about ordering replacement relays.
| Relay Manufacturer | Part Number |
|---|---|
| AXICOM (Tyco Electronics) | IM42PNS (7-1462039-8) |
| Relay Kit | Part Number |
|---|---|
| National Instruments (10 relays) | 781678-01 |
Complete the following steps to disassemble your module and replace a failed relay.
- 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. Relay names are labeled on the back of module.
The following table maps the relay names to the channel names.
Channel Name Relay Name Channel Name Relay Name Channel Name Relay Name Channel Name Relay Name CH0 K0 CH20 K20 CH40 K40 CH60 K60 CH1 K1 CH21 K21 CH41 K41 CH61 K61 CH2 K2 CH22 K22 CH42 K42 CH62 K62 CH3 K3 CH23 K23 CH43 K43 CH63 K63 CH4 K4 CH24 K24 CH44 K44 CH64 K64 CH5 K5 CH25 K25 CH45 K45 CH65 K65 CH6 K6 CH26 K26 CH46 K46 — — CH7 K7 CH27 K27 CH47 K47 — — CH8 K8 CH28 K28 CH48 K48 — — CH9 K9 CH29 K29 CH49 K49 — — CH10 K10 CH30 K30 CH50 K50 — — CH11 K11 CH31 K31 CH51 K51 — — CH12 K12 CH32 K32 CH52 K52 — — CH13 K13 CH33 K33 CH53 K53 — — CH14 K14 CH34 K34 CH54 K54 — — CH15 K15 CH35 K35 CH55 K55 — — CH16 K16 CH36 K36 CH56 K56 — — CH17 K17 CH37 K37 CH57 K57 — — CH18 K18 CH38 K38 CH58 K58 — — CH19 K19 CH39 K39 CH59 K59 — — - Replace the Relay
The NI PXI-2571 uses lead-free assemblies.
Note NI recommends using lead-free solder for relay replacement on lead-free assemblies and using lead solder for relay replacement on lead assemblies.Caution Do not rework lead assemblies using a lead-free work station. Lead solder from the unit could contaminate the station.Caution 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 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.
Tip In NI-SWITCH 3.1 or later, 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 about
resettling relay count.