Description

Product Overview

In the field of industrial rotating machinery health monitoring and protection, the Bently Nevada 3500/22M (part number 138607-01) plays a crucial role as the “actuator terminal.” It does not acquire sensor signals, but instead receives internal logic commands from other monitoring cards within the 3500 frame (such as the 3500/42M vibration card and the 3500/25 speed card), and outputs dry contact signals through its built-in electromechanical relays to trigger external safety actions.

This module is the final link in the “sensing-judgment-execution” closed-loop of the 3500 machinery protection system. For example, when the vibration value exceeds the preset “Danger” threshold, the 3500/42M card sends a command to the 3500/22M, which immediately closes its relay contacts, cutting off the motor power or closing the intake valve, thus preventing catastrophic equipment failure.

🔍 Model Explanation:

3500/22M: Indicates that this is the 22nd type of relay output module in the 3500 series, with “M” signifying its compatibility with 3500/XXM series monitoring cards (i.e., supporting “Monitor” mode, possessing more advanced diagnostic and communication capabilities).

138607-01: ABB/Bently official part number, used for global procurement and traceability. Technical Specifications

Table

Parameter | Specification

Manufacturer | Bently Nevada (now part of Emerson)

Module Type | Dual-Channel Relay Output Module

Number of Output Channels | 2 independent relays (each with normally open NO + normally closed NC contacts)

Contact Rating | 2 A @ 250 V AC or 30 V DC (resistive load)

Switching Voltage | Maximum 250 V AC / 30 V DC

Electrical Isolation | Isolation between relay coil and contacts ≥ 1500 V RMS

Response Time | ≤ 10 ms (typical)

Operating Temperature | 0°C to +65°C

Mounting Method | Plugs into 3500 system frame (requires 3500/15 power supply or 3500/20 frame interface module)

Status Indication | LED for each channel: Green (OK), Red (Alarm/Trip)

Redundancy Support | Configurable for redundant output (requires system-level settings)

Certifications | CE, UL, CSA, ATEX (depending on specific version)

Key Features and Benefits

* High-reliability electromechanical relays: Uses industrial-grade relays with long contact life and strong surge resistance, suitable for critical safety circuits.

* Dual-channel independent control: Each relay can be configured separately for Alert, Danger, or Trip output, meeting different protection level requirements.

* Real-time status feedback: Front panel LEDs clearly display module operating status and each channel’s output status for quick on-site diagnosis.

* Seamless integration with the 3500 system: Automatically obtains configuration parameters from the backplane bus without additional wiring; supports online monitoring and testing with System 1 software.

* Safety compliance: Complies with IEC 61508 functional safety principles (although not a SIL certified module, it is commonly used in the auxiliary output layer of SIL2/SIL3 systems).

Typical Application Scenarios

Power plant turbine generator sets: Outputs trip signals to the ETS (Emergency Trip System) to achieve emergency shutdown in case of overspeed or excessive shaft vibration.

Oil and gas compressor stations: Drives main motor shutdown relays or closes inlet/outlet valves. Chemical Process Pump Protection: When excessive shaft displacement occurs, an interlock triggers a pump shutdown to prevent seal damage and leakage.

Wind Turbine Gearbox Monitoring: Outputs alarm signals to the SCADA system, prompting maintenance personnel to check the bearing condition.

Installation and Configuration Highlights

Frame Compatibility: Must be installed in a 3500 standard frame, and the system requires a 3500/15 power supply module and a 3500/20 frame interface module (or a 3500/22 with built-in communication capabilities).

Relay Wiring: External wiring should use shielded cables, and contact load must not exceed the rated value; it is recommended to install surge suppressors across inductive loads (such as contactor coils).

Software Configuration: Use Rack Configuration Software (RCS) or the System 1 platform to assign a source to each channel (e.g., which alarm level from which monitoring card).

Testing Function: Supports “relay test” mode, allowing verification of contact operation without shutting down the system.

Lifecycle and Procurement Recommendations

As of 2026. the Bently Nevada 3500/22M 138607-01 is still in “Active” status and is one of the most commonly used output modules in existing 3500 systems worldwide.

New Projects: Emerson still recommends using this module in new 3500 systems.

Spare Parts Inventory: It is strongly recommended to stock at least one spare module for critical units, as it is the terminal execution component of the protection system, and failure will lead to protection function failure.

Authenticity Verification: Be aware of refurbished or counterfeit modules on the market. Genuine products have clear labels, verifiable serial numbers, and no signs of contact burning.

Shenzhen Changxin Commitment: We guarantee that all Bently Nevada 3500/22M 138607-01 modules supplied are brand new genuine Emerson products, with official channel certification. Each module undergoes power-on functional testing, relay action verification, and appearance quality inspection, and comes with a 12-month warranty and technical documentation support to ensure the reliable operation of your rotating machinery protection system. Technical Summary (English):

The Bently Nevada 3500/22M (138607-01) is a dual-channel relay output module for the 3500 Machinery Protection System. It converts internal alarm/trip logic from monitoring cards into dry contact outputs to interface with external safety systems such as PLCs, ESD, or motor control centers. Featuring two independent Form C relays (NO/NC), LED status indicators, and seamless integration with System 1 software, it delivers high reliability for critical machinery protection in power, oil & gas, and industrial applications.