Product Core Brief
- Model: 136719‑01
- Brand: BENTLY
- Series: 3500 Machinery Protection System
- Core Function: Acts as primary gateway, transferring rack monitoring and alarm data to DCS, SCADA and host diagnostic software.
- Product Type: 3500/04 System Communication Module
- Key Specs: 10/100/1000 Base‑T Ethernet | RS‑485 Modbus RTU | 1+1 redundant capable ⚠️ EOL — limited stock remaining

BENTLY 133442‑01
Product Introduction
BENTLY 136719‑01 serves as the external data gateway for a 3500 machinery protection rack. It converts proprietary backplane bus traffic into standard industrial protocols for plant‑wide control systems.
Unlike basic serial‑only communication cards, this unit supports gigabit Ethernet. Redundancy switch time sits at ≤10 ms for fault‑tolerant setups —though your mileage may vary under heavy burst data loads.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Protocols | Modbus TCP, Modbus RTU, OPC UA, SSH, HTTPS |
| Ethernet Interface | 10/100/1000 Base‑T |
| Serial Interface | RS‑485 (Modbus RTU) |
| Redundancy Mode | 1+1 hot‑standby, ≤10 ms switch time |
| Maximum Supported Rack Modules | 32 pieces of 3500 series cards |
| Operating Ambient Temperature | ‑20 °C to +70 °C |
| Power Requirement | 18‑30 V DC, ≤0.8 A per module |
| Hot‑Swap Support | Yes (3500 rack compliant) |
| Physical Weight | 0.44 kg |
| Country of Origin | United States |
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: Source traceability, serial number anti‑counterfeit check, visual inspection (no corrosion/scratches). Check edge connector pins for bending or wear.
- Live Functional Test: Power‑on self‑check, backplane comms handshake, continuous load run >24 hrs with temp logging. Capture LED status snapshots every two hours.
- Electrical Parameter Test: Insulation resistance (500 V Megger, >10 MΩ), ground continuity. Flag any resistance drift below threshold.
- Firmware Verification: Read/record firmware version, photograph DIP switch/jumper settings. Well, technically it supports OPC UA server, but only on firmware v6.1+.
- Final QC & Packaging: Anti‑static bag seal, QC Passed label with date. Matching terminal hardware bagged alongside the unit.

BENTLY 133442‑01
Replacement Pitfall Guide
❗ Firmware Mismatch: The unit will drop protocol connections if host rack firmware falls below minimum revision. Older 3500 releases cannot enable gigabit throughput.❗ DIP Switch / Jumper Misconfiguration: Factory defaults rarely match field settings. Pay close attention to RS‑485 bus termination jumpers on the first terminal block.❗ Terminal / Cable Incompatibility: Pin definitions shift across part revisions. Cross‑reference wiring drawings before connecting shield grounds for serial links.❗ Power Supply Mismatch: Recalculate total rack power with 20% headroom. Adding this module can push marginal power supplies over their continuous rating.❗ ESD Damage: Use anti‑static mat; caution in dry environments. Static discharge can degrade Ethernet port performance with no visible physical damage.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
- Scan cycle: 10 ms (simulated load, 24 active monitor channels)
- Comms throughput: 1000 Mbps (Gigabit Ethernet, Modbus TCP)






