125720-02 4-Channel Relay Output Module

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	125720-02
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 125720-02 4-Channel Relay Output Module is a full-height industrial automation module providing four independent SPDT relay outputs. Installed in one full-height front slot with a matching rear I/O slot, 125720-02 supports direct control of turbine trip circuits, compressor shutdown systems, and pump alarms. Each relay in 125720-02 can be programmed with AND/OR logic using Alert, Danger, Not-OK, or specific monitor channel inputs to perform precise alarm drive functions.

125720-02 relays are epoxy-sealed with a 250 Vrms arc suppressor, rated for 100,000 cycles at 5 A, 24 Vdc or 240 Vac. Maximum switched voltage is 125 Vdc or 250 Vac, and maximum switched current is 2 A AC and up to 2 A at 0–30 Vdc. Minimum switched current is 100 mA at 12 Vdc. LED indicators include OK, TX/RX communication, and CH ALARM, while operating temperature ranges from -30°C to +65°C and humidity tolerance is 95% non-condensing. Typical power consumption is 5.8 W. 125720-02 enables automation engineers to implement multi-channel relay control efficiently within 3500 monitoring racks.

Applications

Operate Turbine Trip Circuits

125720-02 relays switch turbine emergency trip solenoids rated for 5 A at 24 Vdc. Multiple channels allow assigning separate trip logic for vibration and overspeed inputs.

Activate Compressor Alarms

125720-02 channels can be connected to compressor fault indicators or sirens. Each channel handles 2 A at 0–30 Vdc, enabling direct alarm activation without additional relays.

Control Pump Shutdown

Using programmable logic in 125720-02, pumps can be stopped based on vibration or temperature thresholds. AND/OR logic ensures shutdown only occurs under defined multi-channel conditions.

Connect to Distributed Control Systems

Relay outputs from 125720-02 interface directly with DCS digital inputs. With maximum switched voltage of 125 Vdc/250 Vac, signals from 125720-02 communicate events from monitoring racks to plant-wide automation.

Specifications

Competitive Advantage

Integrate Four Relays in One Module

125720-02 provides four SPDT relays in one full-height slot, supporting up to 450 VA switched power. This reduces rack space requirements and consolidates multiple functions in a single module.

Directly Switch AC and DC Loads

125720-02 handles up to 2 A at 0–30 Vdc and 2 A AC at 250 Vac. This capability eliminates external interposing relays for most automation circuits.

Observe Status via Front Panel LEDs

OK, TX/RX, and CH ALARM LEDs on 125720-02 allow operators to verify communication and active alarms instantly, minimizing diagnostic time.

Function in High Temperature and High Humidity Environments

Operating between -30°C to +65°C and tolerating 95% non-condensing humidity, 125720-02 can be installed in turbine control rooms, compressor cabinets, and pump stations without additional cooling or protection.