IMB222
Rev.4.05 May 2022
14
Power supply
(10÷30)
𝑉
𝐷𝐶
Baud rate
up to 115200 baud
Internal terminator resistance (optional)
120
Ω
Isolation:
Power supply/RS485-422
RS485-422/ RS485-422
2000Vac, 50Hz, 1min
2000Vac, 50Hz, 1min
Maximum distance / baud rate ratio (recommended)
3
1km @ 38400bps
Current consumption
35mA
TX/RX switching time (RS485)
150µs
Operating temperature
(-20 ÷ 60) °C
Storage temperature
(-40 ÷ 85) °C
Relative humidity without condensation
(0 ÷ 90) %
DIN rail compatible
Automatic baud rate adaptation
Serial connection mounting and removal contact
Order code: EVO005
7.2
Connection cables
A specifically designed optional cable for Modbus serial networks is available as an option. It
consists of two twisted cables (used for RS485 serial line) that allows greater noise rejection,
and of two power cables with larger diameter to sustain higher currents. The two pairs of
cables are shielded using an overall aluminum foil and a drain wire, allowing for an easy
connection with M12 connectors. An external PVC jacket is used for cable enclosure.
Cable characteristics are indicated in the following tables.
Conductors
Conductors nr.
4 + drain wire and shield
Features
1 twisted pair AWG26 [serial signal] (0.14 mm
2
)
1 pair AWG22 [power supply] (0.34 mm
2
)
Material
Copper
Color
1 twisted pair [serial]: white-light blue
Pair [power supply]: red-black
Shield foil
Material
Aluminum with drain wire
Outer jacket
Material
PUR 92ShA -40÷90°C (static), Halogen free
Color
Matte grey
Diameter
(5.1 ± 0.2)mm
Electrical and mechanical data
Cables for static application
Characteristic impedance at 1
MHz
(87 ± 10)
Ω
Maximum capacitance
58pF/m
Resistance at 20°C
Twisted pair[serial signal]: 154.6
Ω
/km
Pair [Power supply]: 64.2
Ω
/km
3
The maximum distance depends on the number of devices connected, type of cabling, noises, etc.