Product Introduction
3500/04 136719-01 Internal Barrier Earthing I/O Module is used to achieve the grounding function within the system and supports the safe operation of the isolated internal system. As a well-known brand in the field of industrial equipment condition monitoring and protection worldwide, Bently Nevada's 3500 series mechanical protection system (3500 Series Machinery Protection System) has become the core guarantee platform for the safe operation of large rotating equipment in industries such as power generation, oil and gas, chemical engineering, and heavy industry manufacturing.
Technical Specifications
|
Manufacture |
BENTLY NEVADA |
|
Model |
3500/04 |
|
Part Number |
136719-01 |
|
Description |
Internal Barrier Earthing I/O Module |
| System compatibility | Bently Nevada 3500 series monitoring system |
| Installation method | The dedicated I/O slots installed in the 3500 series standard rack |
| Safety protection type | Internal Barriers - Safety Grounding |
|
Origin |
USA |
|
Dimension |
16*16*12cm |
|
Weight |
0.23kg |
Product Details
In the 3500 series system, certain built-in isolation modules (such as I/O modules with internal isolation barriers) require a secure method to bond the isolation barrier to the overall grounding reference point of the system. 3500/04 136719-01 provides this Intrinsic Safety (essentially safe) grounding point, which combines the safety barrier circuit of the internal isolation with the overall grounding network of the system, maintaining a low-energy, safe isolated connection between the field sensors and the control unit.
3500 Internal Barriers are intrinsically safe interfaces that provide explosion protection for transducer systems connected directly to the 3500 Machinery Protection System. The internal barriers are fully compatible with the 3500 System and provide a convenient and cost-effective solution for installing all types of transducer systems within a hazardous area.
We offer Bently Nevada transducer systems with comprehensive approvals for hazardous area installations. The transducer systems are matched to those of the 3500 Internal Barriers.
Each component complies with both the individual and, as part of a system safety requirements of North American and international standards. Hence, you don't have to reference individual certificates to verify the compatibility between components.
Standard and internal barrier monitors can reside within the same 3500 rack. You can upgrade standard monitors by replacing existing I/O modules with those that contain internal barriers.
3500/04 136719-01 I/O Module Positioning
Contact: info@htechplc.com

Internal barrier I/O modules have an increased depth over that of standard barrier I/O modules. Consider the rack position with respect to adjacent modules to ensure that you can easily access the I/O modules during maintenance.
Internal barrier I/O and IS Earthing modules can occupy any general-purpose rack position and can be adjacent to standard I/O module types without compromising the 50 mm (2 in) physical separation requirement between safe and hazardous area field wiring.
Follow these guidelines when positioning I/O modules:
- Group all internal barrier I/O modules in adjacent rack positions to simplify the installation.
- Place the IS Earthing Module in a rack position that provides easy access for routine online maintenance.
- Consider the IS Earthing Module's positioning relative to adjacent internal barrier I/O modules and cabinet bulkheads.
If you plan to install standard I/O modules or the IS Earthing Module between a pair of internal barrier I/O modules, allow a minimum of two rack positions so that you can easily access the standard I/O or IS Earthing Module online without disturbing the adjacent I/O modules.
What is the Earthing (Grounding) I/O Module
In industrial monitoring systems, the Earthing I/O Module (grounding I/O module) is a module specifically designed to handle grounding and isolation safety within the system. Its main function is not to collect signals or output control, but to provide a safe and stable intrinsically safe grounding point and shielding for the entire system and internal isolation modules.
In the 3500 series systems, modules with internal isolation (Internal Barriers) need to be combined with specific grounding modules to ensure that the overall explosion-proof or intrinsically safe level of the system meets the requirements of industrial sites. 3500/04 136719-01 is such a "grounding bridge module for internal isolation systems", which realizes the electrical connection between "safe grounding" and internal isolation barriers in the system.

Selection Guidance
| 3500/04-AA-BB | |
| A: I/O Module type: Earthing module | |
| 0 1 | Earthing I/O Module |
| B: Agency Approval | |
| 0 0 | None |
| 0 1 | North American Hazloc |
| 0 2 | Multi (CSA, ATEX, IECEx) |
| Spares | |
| 136719-01 | Earthing I/O Module |
| 138257-01 | Earthing Module Front Panel |
| 135473-01 | 3500/25 I/O Module with Internal Barriers and Internal Terminations |
| 135489-01 | 3500/42, /70, /72 I/O Module with Internal Barriers (4 prox/accel channels) and Internal Terminations |
| 135489-02 | 3500/42, /70 I/O Module with Internal Barriers (2 prox/accel + 2 Velomitor channels) and Internal Terminations |
| 135489-03 | 3500/42, /70 I/O Module with Internal Barriers (4 Velomotor channels) and Internal Terminations |
| 135489-04 | 3500/40 I/O Module with Internal Barriers and Internal Terminations |
| 136703-01 | 3500/50 I/O Module with Internal Barriers and Internal Terminations |
| 136711-01 | 3500/60 I/O Module with Internal Barriers and Internal Terminations |
| 136711-02 | 3500/61 I/O Module with Internal Barriers and Internal Terminations |
| 137110-01 | 3500/62 I/O Module with Internal Barriers and Internal Terminations |
Installation and Configuration Guide
The installation and configuration of 136719-01 involves system planning, rack layout, electrical wiring and safety considerations.
Rack space planning
136719-01 occupies a specific I/O slot position in the 3500 series rack. Since it provides internal isolation for the system's grounding, its location should be designed to ensure that operators can easily access it for maintenance and troubleshooting.
Connection and isolation requirements
For modules with Internal Barriers, they must be used in combination with the 136719-01 grounding module to ensure the integrity of the isolation circuit. The grounding wire should be laid in accordance with industrial electrical standards and follow the grounding wiring method specified by the site to avoid the formation of unnecessary ground loops.
Connect to the peripheral system
136719-01 Does not directly communicate with systems such as DCS or SCADA, but its grounding characteristics affect the stability of data acquisition and transmission within the overall system architecture. Therefore, in the design of the architecture, attention should be paid to the proper layout of isolation modules, grounding paths, and the control system.
Upgrade and Replacement Strategy
With the changing requirements of industrial site monitoring, it may sometimes be necessary to upgrade the isolation module or the entire system architecture. During the upgrade process, it is essential to ensure the compatibility of the 136719-01 module with the new components and to follow the latest installation specifications and safety guidelines provided by the manufacturer.












