OHR E810A-A-X-D 210526366 Product Description

Overview

OHR E810A-A-X-D 210526366 is an 8-channel flashing alarm annunciator manufactured by OHR Hongrun, 210526366 is the unique serial number of this unit. The OHR E810A-A-X-D receives contact or TTL level alarm signals from field instruments, and provides visual flashing indication and audible alarm for abnormal process status. This E810A flashing alarm annunciator serves as a reliable OHR E810 series alarm annunciator, widely used for process alarm monitoring in power, chemical, water treatment and metallurgy control rooms of the OHR E810 series alarm annunciator.

Features

This OHR E810A-A-X-D adopts opto-isolation for each input channel to suppress field interference for the OHR E810 series alarm annunciator. It supports open/closed contact and TTL level input modes, with alarm memory, mute and test functions. High-brightness indicator lamps flash when alarm triggers, accompanied by built-in buzzer sound alarm. It is equipped with relay contact output for interlock with other control equipment and optional RS485 Modbus communication for upper system data upload. The OHR E810A-A-X-D uses embedded panel mounting structure, simple wiring and front panel operation keys for local mute and test. It meets EMC electromagnetic compatibility requirements and runs stably in industrial control cabinet environments of the E810A flashing alarm annunciator.

Specs

The OHR E810A-A-X-D series: 8-channel flashing alarm annunciator. Input: contact open/closed or TTL level, 8 channels, opto-isolated. Output: relay alarm contact, buzzer sound alarm, flash indicator. Communication: RS485, Modbus RTU optional. Power supply: AC100-240V / DC24V optional. Power consumption: ≤3W. Mounting: panel embedded installation. Protection rating: front panel IP40, rear IP20. The OHR E810A-A-X-D complies with CE and industrial annunciator standards as a E810A flashing alarm annunciator.

Principle

OHR E810A-A-X-D 210526366 monitors the state of each field alarm input channel continuously. The OHR E810A-A-X-D internal circuit detects the change of contact or level signal, triggers flashing light and buzzer alarm once abnormal signal is received, and locks the alarm state with memory function until manual mute or signal reset. The relay contact changes state to transmit alarm signal to PLC or interlock loop. The isolated input structure of the OHR E810 series alarm annunciator prevents disturbance spread from field side to control side.

Applications

This OHR E810A-A-X-D is widely used in chemical plants, power stations, waterworks, sewage treatment plants and metallurgical workshops. It is applied for pressure, temperature, liquid level and equipment fault centralized alarm display in control rooms. It is used for spare replacement and retrofit of existing OHR alarm annunciator systems. The OHR E810A-A-X-D 210526366 delivers dependable multi-channel status alarm indication for industrial process monitoring as a proven E810A flashing alarm annunciator.