Description
Bently 3500/32 125712-01
Technical Specifications
- Module Type: 4-Channel Relay I/O Module
- PWA Number: 125712-01
- Contact Type: SPDT (Single Pole Double Throw)
- Channels: 4 independent relays
Functional Features
- Electrical Isolation: Protects the 3500 rack from field transients and ground loops.
- Flexible Logic: Relays can be programmed for alarm, danger, or custom logic functions.
- Fail-Safe Design: Relays are normally energized; loss of power de-energizes them to a safe state.
Application Scenarios
Used to drive external alarms, indicator lights, PLC inputs, and non-critical shutdown devices.
Performance Parameters
- Operating Temperature: -30°C to +65°C
- Storage Temperature: -40°C to +85°C
- Humidity: 95% non-condensing
- Contact Rating: 2A at 24 Vdc / 1A at 120 Vac
Material Composition
Industrial-grade electromechanical relays with gold-plated contacts for reliable low-level switching.
Structural Characteristics
Full-height module with front-panel relay status LEDs.
Working Principle
Receives logic signals from the rack backplane and energizes/de-energizes relay coils to switch external contacts.
Installation Requirements
Install in any available monitor slot. Use appropriate wire gauge for external loads.
Usage Notes
Verify the PWA number matches the existing module. Suppress inductive loads with flyback diodes to prevent contact welding.
