ESI Digital Status Detector
ESI Series
8-channel dry-contact switch inputs, precise status monitoring, correction algorithm + high-speed sampling, 1 relay output with linkage control.
Product Overview
The ESI Digital Status Monitor uses proprietary patented software algorithms and embedded programs, paired with industrial-grade measurement and control chips, to accurately deliver data processing, predictive analysis and more. Integrating “measurement, control, transmission and intelligence” in one device, it is widely used in military, petrochemical, construction, industrial parks, railways, ports, airports, agriculture, mining, equipment, meteorology, water utilities, environmental protection, new energy and other fields. With error-correction algorithms, high-speed sampling and other technologies, it thoroughly resolves existing problems such as “no alarm” and “false alarm”, making data “trustworthy” and “intelligently controllable”.
Core Monitoring Capabilities
8 channels of dry-contact digital input with independent configuration for accurate status monitoring. Error-correction algorithm + high-speed sampling for accurate, fast and stable data with early prediction. 1 relay output with linkage control support for rapid response to site applications. OLED display + physical buttons, RS485 communication, Modbus protocol, 36mm compact width. Product Features
Data Generated
Product Features
Accurate Data
The high-speed chip captures key parameters accurately, quickly and stably and enables early prediction, while discarding useless parameters such as current and voltage monitoring.
Enhanced Key Parameters
Split-core high-precision sensors run stably under strong electromagnetic interference.
All-Weather Sensors
Supports three channels of independent residual current monitoring, 2 DI inputs, 1 relay output and threshold setting, allowing more monitoring functions and channels to be added quickly based on site application characteristics.
Complete Data Acquisition
Supports linkage control; standard OLED display and physical buttons for convenient on-site query and setting; RS485 communication, Modbus protocol; 36mm compact width — easy to deploy even in the tightest spaces.
Compact, Flexible and Convenient
36mm compact width design with DIN rail mounting, adapting to all kinds of compact installation scenarios. Selection Guide
System Topology
Selection Guide
Model Naming Rules
ESI - 1 O 1 1 0 - R ESI Product Input monitoring module 1 Power supply 1=DC5V / 2=AC220V O Display O=OLED 1 Input channels 1=8 channels 1 Input mode 1=dry contact input, built-in power supply 0 Reserved 0=Reserved R Communication R=RS485 (Modbus) Model Power Supply Display Digital Input Relay Output RS485/MODBUS ESI-12110-R External 5V supply OLED 8 1 Supported ESI-22110-R 220V OLED 8 1 Supported Technical Parameters
| Model | Power Supply / Display / Digital Input / Relay Output / RS485/MODBUS |
| ESI-12110-R | External 5V supply / OLED / 8 / 1 / Supported |
| ESI-22110-R | 220V / OLED / 8 / 1 / Supported |
Technical Parameters
Basic Parameters
Operating voltage DC 4.75~5.25V (5V) or AC 180~250V (220V) Power consumption ≤2W Operating temperature -20℃~70℃ Operating humidity <95% Weight 150g Dimensions 36*110*69mm (L×W×H) Enclosure material Thermoplastic material UL94V0 Protection rating IP20 Mounting method Standard 35mm DIN rail Display OLED Communication RS485 Communication protocol Modbus protocol
| Operating voltage | DC 4.75~5.25V (5V) or AC 180~250V (220V) |
| Power consumption | ≤2W |
| Operating temperature | -20℃~70℃ |
| Operating humidity | <95% |
| Weight | 150g |
| Dimensions | 36*110*69mm (L×W×H) |
| Enclosure material | Thermoplastic material UL94V0 |
| Protection rating | IP20 |
| Mounting method | Standard 35mm DIN rail |
| Display | OLED |
| Communication | RS485 |
| Communication protocol | Modbus protocol |
Monitoring Functions
Digital input Dry contact input, built-in power supply Digital output Relay output; contact capacity: AC250V/3A, DC30V/3A; normally open contact Installation Instructions
| Digital input | Dry contact input, built-in power supply |
| Digital output | Relay output; contact capacity: AC250V/3A, DC30V/3A; normally open contact |
Installation Instructions
a
Installation Dimensions
36mm width 110mm height 69mm depth 35mm standard DIN rail b
Terminal Description
Wiring definition Terminal Definition L1 Live N Neutral 5V 5V DC power input GND 0V A RS485 A terminal B RS485 B terminal DO1 Output terminal (relay output, directionless) DO1' Output terminal' (relay output, directionless) DI1 Digital input 1 (connect the other end to GND, directionless) DI2 Digital input 2 (connect the other end to GND, directionless) DI3 Digital input 3 (connect the other end to GND, directionless) DI4 Digital input 4 (connect the other end to GND, directionless) DI5 Digital input 5 (connect the other end to GND, directionless) DI6 Digital input 6 (connect the other end to GND, directionless) DI7 Digital input 7 (connect the other end to GND, directionless) DI8 Digital input 8 (connect the other end to GND, directionless) Note: The 220V AC input and the 5V DC power input are mutually exclusive — connect only one.
| Terminal | Definition |
| L1 | Live |
| N | Neutral |
| 5V | 5V DC power input |
| GND | 0V |
| A | RS485 A terminal |
| B | RS485 B terminal |
| DO1 | Output terminal (relay output, directionless) |
| DO1' | Output terminal' (relay output, directionless) |
| DI1 | Digital input 1 (connect the other end to GND, directionless) |
| DI2 | Digital input 2 (connect the other end to GND, directionless) |
| DI3 | Digital input 3 (connect the other end to GND, directionless) |
| DI4 | Digital input 4 (connect the other end to GND, directionless) |
| DI5 | Digital input 5 (connect the other end to GND, directionless) |
| DI6 | Digital input 6 (connect the other end to GND, directionless) |
| DI7 | Digital input 7 (connect the other end to GND, directionless) |
| DI8 | Digital input 8 (connect the other end to GND, directionless) |
Key Points
Definition: The ESI Digital Status Monitor is a FEXLINK electrical monitoring device for switch/digital signal acquisition. Core capabilities: Supports multi-channel digital input acquisition, monitoring the switching states of circuit breakers, contactors, relays and more, with RS485 upload. Application scenarios: Suitable for digital signal monitoring scenarios such as circuit breaker status in distribution cabinets and equipment operating status. Related products: ESA electrical safety monitoring terminal, FG intelligent gateway, SFA multi-factor measurement and control unit.
FAQ
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