Bently Nevada 3500/32M 125720-02 Spare 4-Channel Relay Output Module for Hazardous Area and Functional Safety Systems
A rear safety-system output module providing 4 relay outputs in the 3500/32M 4-Channel Relay Module platform.
Product Overview
3500/32M 125720-02 is the Bently Nevada spare 4-channel relay output module for hazardous area and functional safety systems for the 3500/32M 4-Channel Relay Module. It serves as the rear safety-system output module in the relay assembly.
Dedicated hazardous-area and functional-safety output variant. The complete part number must be matched with the correct companion module, channel configuration and field-wiring duty.
Performance
- 4 relay outputs.
- Restricted to 30 V maximum in hazardous-area and functional-safety service.
- Relay construction: Single-pole double-throw (SPDT) relay outputs.
- Power characteristic: Provided through the companion relay control module.
- Operating range of -30 to +65 °C with 95% non-condensing humidity.
Technical Details
| Manufacturer | Bently Nevada, a Baker Hughes business |
|---|---|
| Part Number | 3500/32M 125720-02 |
| Product Family | 3500/32M 4-Channel Relay Module |
| Exact Product Type | Spare 4-Channel Relay Output Module for Hazardous Area and Functional Safety Systems |
| Assembly Position | rear safety-system output module |
| Channels | 4 relay outputs |
| Power | Provided through the companion relay control module |
| Relay Architecture | Single-pole double-throw (SPDT) relay outputs |
| Operation | Restricted to 30 V maximum in hazardous-area and functional-safety service |
| Operating Temperature | -30 to +65 °C |
| Storage Temperature | -40 to +85 °C |
| Humidity | 95%, non-condensing |
| Integration | Use with 3500/32M 149986-02 and the applicable approved rack configuration |
System Integration
- Use with 3500/32M 149986-02 and the applicable approved rack configuration.
- Place 3500/32M 125720-02 in its documented rear safety-system output module rack position.
- Retain channel assignments, Alarm Drive Logic, voting rules and energized-state selections.
- Check field contact ratings and any hazardous-area or functional-safety voltage limits before energization.
Applications
- Machinery-protection alarm annunciation and shutdown logic.
- Programmable voting of alert, danger, Not-OK and measured-variable conditions.
- Relay interface between 3500 monitor logic and plant field circuits.
- Maintenance replacement in a documented Bently Nevada 3500 rack.
FAQ
Which applications require 3500/32M 125720-02?
3500/32M 125720-02 is the 4-channel relay output module intended for hazardous-area and functional-safety systems.
What voltage restriction applies to 3500/32M 125720-02?
3500/32M 125720-02 is limited to 30 V maximum switched voltage in the documented hazardous-area and functional-safety configuration.
Which control card is paired with 3500/32M 125720-02?
3500/32M 125720-02 is used with the 3500/32M 149986-02 front relay control module.
Can 3500/32M 125720-02 be treated as identical to 125720-01?
No. 3500/32M 125720-02 is the designated safety and hazardous-area output version, while 125720-01 is the standard output module.
How much rack space does 3500/32M 125720-02 require?
3500/32M 125720-02 occupies one full-height rear slot and has a documented weight of 0.4 kg.
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