Bently Nevada 3500/32 125720-01 4-Channel Relay I/O Module

Bently Nevada 125720-01 3500/32 Machinery Protection Relay

Bently Nevada 125720-01 3500/32 Machinery Protection Relay

Availability: 10 left in stock

Bently Nevada 125720-01 3500/32 4-Channel Relay I/O Module Configured for alarm and machinery shutdown logic execution in Bently Nevada 3500...

SKU: 3500/32M 125720-01

Manufacturer: Bently Nevada
Product No.: 3500/32M 125720-01
Product Type: Machinery Protection Relays
Payment:T/T, Western Union
Weight: 400g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Bently Nevada 125720-01 3500/32 4-Channel Relay I/O Module

Configured for alarm and machinery shutdown logic execution in Bently Nevada 3500 Series Machinery Protection Systems, the Bently Nevada 125720-01 (3500/32 4-Channel Relay I/O Module) provides direct physical/electrical execution. The half-height component maps software-configured alert and danger states from adjacent rack monitors into four independent discrete dry contact outputs. These Form C physical contacts route hardware trip commands directly to emergency shutdown devices or plant control interfaces.

Hardware Specifications

Parameter	Specification
Model	125720-01
Brand	Bently Nevada
Origin	USA
Weight	0.4 kg
Dimensions	241 mm x 24.4 mm x 99.1 mm
Operating Temp	-30 to +65 deg C
Power Consumption	5.8 Watts (Maximum)
Module Type	4-Channel Relay I/O Module (Half-height)
Number of Channels	4 Independent Relays
Relay Type	Single-Pole, Double-Throw (SPDT) / Form C
Contact Ratings (Resistive)	5 A @ 24 VDC / 120 VAC
Maximum Switching Voltage	125 VDC / 250 VAC
Humidity	95% non-condensing

Machinery Monitoring and TSI Features

The module provides discrete execution paths linked directly to backplane rotor dynamics evaluation parameters. When dynamic monitors flags violations based on defined eddy-current probe scaling configurations, the relay logic processes the command within millisecond profiles. The internal circuit architecture applies continuous cross-talk suppression along the backplane traces to safeguard against accidental relay activation caused by transient spikes. This allows operators to configure safe voting logic parameters (such as 2oo4 configurations) relative to real-time gap voltage validation errors or speed measurements across the network.

Frequently Asked Questions

Q: How is the physical state of the relays determined for fail-safe configurations?

A: Technicians utilize the 3500 Rack Configuration Software to program each channel independently to either a normally energized or normally de-energized state, aligning with the specific plant protection philosophy.

Q: Can this module reside in the front slots of the 3500 chassis alongside monitoring modules?

A: No, the 125720-01 is an I/O hardware component designed specifically to install into the rear I/O slots located at the back of the 3500 machinery protection rack.

Field Installation Guidelines

Chassis Retention: Slide the I/O module into the designated rear slot of the 3500 chassis until the rear connector seats into the backplane. Tighten both thumbscrews to secure structural bonding and ground continuity.
Shield Terminal Routing: Route all discrete control wiring away from active power transmission paths. Terminate the overall field cable shield at the designated rack ground lug, keeping the machine-side shield ungrounded to prevent ground loops.
Inductive Load Suppression: When driving inductive field devices such as large interposing solenoids or contactors, connect external diode or RC snubber suppression circuits across the load to protect the relay contacts from electrical arcing.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.