API 1080G DC Input to Single Setpoint Alarm Trip - Field Configurable

The API 1080G DC Input Alarm Trip is a field-configurable signal monitoring module designed to provide reliable, real-time alarm indication and relay output when a process signal exceeds or falls below a defined threshold. Built for industrial automation and process control applications, the 1080G accepts a wide range of DC voltage or current inputs and activates a heavy-duty relay output based on a user-defined setpoint.

With flexible input selection, adjustable setpoint and deadband, and a robust DPDT relay output, the API 1080G provides a dependable solution for safeguarding equipment, improving process visibility, and ensuring safe operation.

Monitor Critical Process Signals with Confidence

The API 1080G continuously monitors an analog DC signal and triggers an alarm condition when the input crosses a defined setpoint. This enables operators to quickly identify and respond to abnormal conditions such as over-range, under-range, or out-of-tolerance signals.

Typical monitored signals include:

• 4–20 mA process signals

• 0–10 VDC control signals

• Low-level millivolt signals

• Sensor outputs from pressure, temperature, or level transmitters

This makes the 1080G ideal for use in process control systems where reliable alarm indication is critical.

Wide Range of Field-Selectable Inputs

The API 1080G supports a broad range of input signals, allowing it to be used with virtually any industrial sensor or transmitter.

• Voltage inputs: 0–50 mV up to ±10 VDC

• Current inputs: 0–1 mA up to 0–20 mA

Field-selectable input ranges are configured using external switches, enabling quick adaptation to different applications without requiring specialized tools.

Single Setpoint Alarm with Flexible Configuration

The API 1080G provides a single alarm setpoint that can be configured for multiple operating modes.

Alarm Configuration Options:

• High (HI) alarm or Low (LO) alarm

• Latching or non-latching operation

• Normal acting or reverse acting relay behavior

This flexibility allows the module to be tailored to a wide range of monitoring requirements, from simple limit alarms to more advanced safety interlocks.

Adjustable Setpoint and Deadband

The API 1080G allows precise control over when the alarm is triggered and reset.

• Setpoint adjustment: 0 to 100% of input span

• Deadband adjustment: 1% to 100% of span

The deadband feature helps prevent relay chatter in applications where the input signal fluctuates near the setpoint. By adjusting the deadband, users can create a stable operating window that minimizes false alarms.

Heavy-Duty DPDT Relay Output

The module features a robust double-pole, double-throw (DPDT) relay output capable of handling a wide range of loads.

• 7 A @ 240 VAC (resistive load)

• 3.5 A @ 240 VAC (inductive load)

• 8 A @ 30 VDC maximum

This allows the API 1080G to directly control:

• Alarms and warning systems

• Pumps and motors

• Valves and actuators

• Safety shutdown systems

The relay output provides both normally open (NO) and normally closed (NC) contacts for flexible system integration.

Built-In Loop Power Supply

The API 1080G includes an integrated loop power supply that can be used to power external loop-powered transmitters.

• 18 VDC nominal output

• Up to 25 mA capacity

This eliminates the need for an external power supply, simplifying wiring and reducing system complexity.

LoopTracker® and Alarm Status LEDs

The API 1080G includes visual indicators that provide real-time feedback on system status.

LoopTracker LED:

• Indicates input signal level

• Brightness varies with signal strength

• Helps identify wiring or signal issues

Bi-Color Alarm LED:

• Green = normal condition

• Red = alarm condition

These indicators provide immediate visual confirmation of both process conditions and alarm status.

Functional Test and Reset Capability

The module includes a front-accessible test/reset push button that allows operators to verify system operation without altering the input signal.

• Toggles relay output independently of input

• Verifies alarm and system functionality

• Resets latching alarms

This feature simplifies commissioning and troubleshooting.

Fast Response Time for Real-Time Protection

The API 1080G is designed to respond quickly to changing process conditions:

• Typical response time: 70 milliseconds

This ensures timely detection of critical events and rapid activation of alarm outputs.

Rugged Industrial Design

The API 1080G is built for reliable operation in demanding environments:

• Operating temperature: –10°C to +60°C

• Compact plug-in design

• DIN rail or panel mounting using standard 11-pin socket

• Conformal coating option available for moisture resistance

Its durable construction ensures long-term performance in industrial applications.

Typical Applications

The API 1080G is widely used in applications requiring reliable alarm monitoring:

• Process limit backup alarms

• Tank level monitoring

• Over-range and under-range detection

• Equipment protection systems

• Industrial automation and control

It is especially useful in systems where immediate notification of abnormal conditions is required.

Why Use a Setpoint Alarm Module?

Setpoint alarm modules provide a critical layer of protection in industrial systems by:

• Monitoring process variables continuously

• Providing immediate feedback when limits are exceeded

• Triggering automated responses or shutdowns

• Improving safety and system reliability

The API 1080G delivers these capabilities in a compact, easy-to-configure package.

Why Choose the API 1080G?

The API 1080G stands out as a reliable and flexible alarm solution due to its:

• Wide range of field-selectable input signals

• Configurable alarm modes (HI/LO, latching, reverse acting)

• Adjustable setpoint and deadband

• Heavy-duty DPDT relay output

• Built-in loop power supply

• Visual status indicators for easy monitoring

• Fast response time

• Rugged industrial design

A Reliable Solution for Process Alarm Monitoring

The API 1080G DC Input Alarm Trip provides a dependable way to monitor critical process signals and trigger alarms when necessary. Its combination of flexibility, performance, and ease of use makes it an essential component in industrial control systems.

Enhance Your Process Safety and Control

Whether you are protecting equipment, monitoring process limits, or improving system visibility, the API 1080G delivers the performance and reliability needed to ensure safe and efficient operation.

Contact us today to learn more or configure a solution tailored to your application.