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The recommended number of connected devices in Modbus network
- at input voltage of receivers on bus RS-485 not more than 0,125 mA
- at input voltage of receivers on bus RS-485 not more than 1 mA
Readiness time at power switching on, sec, not more than
Precision measurements of voltage, mV, not more than
Precision measurements of current, A, not more than
Precision measurements of temperature, °C, not more than
Rated voltage direct current back supply , V
Voltage supply, at which operability is maintained:
- alternative current, V
- direct current, V
Back supply voltage at which operability is maintained, V
Power consumption (under pressure), W ,not more than
The maximum switched current of output pins, A
Universal inputs
Types of the connected gauges
- gauge with voltage output to 10 V
- gauge with current output to 20 mA
- 'dry contact'
- NTC temperature gauge
The maximum voltage on the universal input, V
The maximum current through the universal input, mА
The voltage of sensors power output, V
The maximum current of sensors power output, А
Programmable relay outputs with switching contacts, pcs.
Commutation service life of output contacts:
- electrical service life under load 16 A(cos φ = 1,0), times, not less
- mechanical service life, times, not less
Unit purpose
Nominal operation condition
The protection level
Climatic version
Permissible pollution density
Overvoltage category
Protection class against electrical shock
Rated insulation voltage, V
Rated impulse withstand voltage, kV
Cross section of wires of connection terminals, mm²
Maximal tightening torque of terminals external screws, N*m
Weight, kg, not more than
Overall dimensions, H*B*L, mm
- with installed antenna
- without antenna
Standard 35 mm DIN rail mounting
Operating position
Housing material - self-extinguishing plastic
Notes:
* Connections on the Ethernet networks/Internet can take more time.
4 DESIGN
EM-486 provides control for MODBUS devices in RS-485 network via Ethernet interfaces or GPRS, or via the
SMS. The unit also allows to read data from devices by MODBUS or from connected sensors.
The processor supports connection to the accumulating data cloud server via Ethernet network with a help of
micro chip of physical interface of Ethernet (or via GPRS with a help of inbuilt GSM-modem, if connection via
Ethernet is not available).
In addition, EM-486 can be connected to Ethernet via MODBUS TCP Protocol to exchange data with MODBUS
devices, or with the product. The controller receives and processes SMS with a password and command read/write for
Modbus devices.
When inserting a memory card the product reads the internal memory for operational logic – program for data
collection and tracking of events. The program runs in the background mode.
Product stores in the internal memory the network settings, parameters of inputs and outputs, the logic of action,
the collected data log.
NOVATEK-ELECTRO
~ 7 ~
Not more, 256
Not more, 32
15*
40
200
2
12
90 – 265
127 – 375
9 – 16
12
16
4
12
24
12
0.1
3
50 000
10 000 000
Communication equipment
continuous
IP20
NC3.1
II
II
II
450
2.5
0.5-3
0.4
0.750
157 х 112 х 56
157 x 99 x 56
arbitrary
EM-486
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