Product Details:
| Network Types | RS-485 Modbus RTU/ASCII, Ethernet, GSM-GPRS (SIM Card) |
| Model Number | EM-481 |
| Power Supply | 12V DC |
| Attributes | RS485 Modbus/ASCI to GSM/Ethernet conversion, Micro SD card |
| Compatible Brand | Any |
| Brand | NOVATEK ELECTRO |
| Application | Remote Monitoring/Control, IOT, Data Logging |
EM-481 provides data collection from connected MODBUS devices, data transfer to the server, data access via MODBUS TCP (GPRS, Ethernet) or SMS text messages (GSM), event tracking and response to events (sending SMS notifications, recording values to MODBUS devices).
EM-481 provides:
· Flexible options of connection (via wire or wireless communication, automatic method selection of communicating with a server, automatic or manual selection of GSM provider and communication parameters,
resetting of MAC-address and other Ethernet settings;
· Protection of access (password for setting mode, filter of IP-address for setting or connection to Modbus network, connection only to the selected server with automatic login, password for control via SMS);
· Different modes of data interchange via MODBUS network (RTU or ASCII, with checking of parity for even-odds or without checking, wide range of transmitting rate, adjustable delay);
· Programming the collection of data, events, and action for events (see Appendix С);
· Service functions (real time clock, firmware updating option).
The device provides control for MODBUS devices in RS-485 network via Ethernet interfaces or GPRS, or via SMS. The device also allows reading data of devices by MODBUS. The processor supports connection to cloud-based data collection server via Ethernet network with a help of microchip of physical interface of Ethernet (or via GPRS with a help of in-built GSM-modem, if connection via Ethernet is not available).
In addition, the device can be connected to Ethernet via MODBUS TCP Protocol to exchange data with MODBUS devices, or with EM-481. The controller receives and processes SMS with a password and command read/write for Modbus devices.
When inserting a memory card the device reads the internal memory for operational logic – program for data collection and tracking of events. The program runs in the background mode.
The device stores the network settings, safety parameters, the logic of action, the collected data log in the built-in memory.
Additional Information:
Technical Specifications:
Description | Value |
DC rated supply voltage, V | 12 |
Data exchange interface via wired network | 10Base-T/100Base-T |
Supported Ethernet protocols | UDP, ARP, TCP |
Data exchange interface via wireless network | GSM |
Supported standards of wireless network | SMS, GPRS |
Integrated servers | MODBUS TCP, HTTP |
Maximum number of connections via Modbus TCP protocol | 4 |
Data exchange interface via Modbus network | RS-485 |
Supported protocols of Modbus network MODBUS via RS-485 | MODBUS RTU, MODBUS ASCII |
Transmission speed in the MODBUS network via RS-485, bit/s | 75 – 921600 |
Maximal output voltage of driver RS-485, V | 3.3 |
Short circuit output voltage of driver RS-485 (maximum), mA | 250 |
Resistance of in-built terminator, Ohm | 70 – 1000 Ohm or disabled |
The recommended number of connected devices in Modbus network:
|
256 max. 32 max. |
Readiness time when power is applied, no more than, s | 15* |
The supply voltage at which the operability is maintained | 9 –30 |
Power consumption (under load), W, not more than | 6 |
Device service | Switchgear and control-gear |
Rated operating condition | Continuous |
Protection class rating | IP20 |
Electric shock protection class | II |
Climatic design version | UHL 3.1 |
Permissible contamination level | II |
Overvoltage category | II |
Rated voltage of insulation, V | 450 |
Rated impulse withstand voltage, kV | 2.5 |
Conductor cross-section for connecting to terminals, mm² | 0.5-3 |
Tightening torque of the terminal screws, N * m | 0.4 |
Weight, kg, maximum | 0.400 |
Overall dimensions (Fig. 1.1), H*B*L, mm
| 64.5*106.5*36 64.5*100*36 |
Installation (mounting) of the device is on standard 35 mm DIN-rail | |
The device remains operational capability in any position in space | |
Housing material – self-extinguishing plastic | |
Notes: * Connections in Ethernet networks/Internet can take more time. | |
EM-481 meets the requirements of the following:
