125704-01 Bently Nevada 3500/34 TMR Relay I/O Module
125704-01
125704-01 is the exact legacy Bently Nevada 3500/34 TMR Relay I/O Module listed in manufacturer spares literature. 125704-01 contains 12 relays arranged as four channel groups of three to provide 2-out-of-3 relay voting. 125704-01 is the rear I/O module only; the two front relay modules, 3500 rack, field wiring, configured alarm logic and certification documents are separate.
Scope note: 125704-01 claims cover only the exact rear TMR Relay I/O Module, its relay arrangement, physical data and archived environmental limits. Alarm-drive logic, redundant front processing, rack operation, shutdown behavior and approvals depend on the complete configured 3500/34 assembly around 125704-01.
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+86 18150117685Legacy exact 3500/34 rear TMR Relay I/O component documented in manufacturer spares literature.
125704-01 appears by its complete part number as the 3500/34 TMR Relay I/O Module in Bently Nevada manufacturer spares tables.
125704-01 groups 12 relays into four three-relay channels whose archived OEM design provides 2-out-of-3 voting.
125704-01 does not include the two front relay modules, rack, field wiring or programmed alarm logic, and the spare number alone does not establish current hazardous-area certification.
| Manufacturer | Bently Nevada LLC |
|---|---|
| Part number | 125704-01 |
| OEM spare description | TMR Relay I/O Module |
| System family | 3500/34 TMR Relay Module |
| Relay count | 12 relays |
| Channel grouping | Four groups of three relays |
| Voting arrangement | 2-out-of-3 for each of four relay channels |
| Channel operation | Each relay channel is normally energized in the archived OEM design |
| Operating temperature | -30 to +65 deg C (-22 to +150 deg F) |
| Storage temperature | -40 to +85 deg C (-40 to +185 deg F) |
| Humidity | 95%, non-condensing |
| I/O module dimensions | 241 x 24.4 x 99.1 mm (9.50 x 0.96 x 3.90 in) |
| I/O module weight | 0.5 kg (1.0 lb) |
| Rack requirement | One full-height rear slot |
| Not included | Two front relay modules, 3500 rack, field wiring, alarm configuration and certification documents |
| Approval boundary | The exact spare number does not establish current certification; verify the installed nameplate and current certificate set |
Compatibility statements are limited to the cited manufacturer documentation. Availability, condition and substitution must be confirmed separately.
125704-01 is the exact legacy Bently Nevada 3500/34 TMR Relay I/O Module listed in manufacturer spares literature.
125704-01 contains 12 relays arranged as four groups of three relays.
125704-01 uses the archived 3500/34 design arrangement that provides 2-out-of-3 relay voting for each of four relay channels.
125704-01 occupies one full-height rear I/O slot in a compatible 3500/34 rack configuration.
125704-01 does not include the two half-height front relay modules; 125704-01 is the separate rear I/O module.
The archived OEM datasheet associates 125704-01 with -30 to +65 deg C operation, -40 to +85 deg C storage and 95% non-condensing humidity.
125704-01 alone does not prove current hazardous-area approval; verify the 125704-01 nameplate, installation drawing and current certificate set for the destination.
When replacing 125704-01, verify the full 125704-01 number, rear-slot fit, paired front modules, relay wiring, alarm logic, rack revision and required approval documentation.
Send the complete part number, installed-system details, quantity, destination and clear label photos. Availability and condition will be confirmed before quotation.
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