Product sheet

ZK EX Communication unit

Gallery

CTT EMAG · Katowice

Description

The ZK EX Communication Unit is designed for processing and data exchange between devices with different types of digital transmission. The unit was made in accordance with the requirements for group I, category M1 equipment.

It is designed for operation in spaces at risk of methane explosion and coal dust explosion.

The communication unit equipped with the MK2 communication module can use a network infrastructure based on fiber optics or UTP copper network cable. RS485 transmission circuits, fiber optic signals and network transmission circuits which have protection level "ia" are accessible outside the communication unit. The ZK EX Communication Unit allows conversion of communication standards in both hardware and software aspects by changing data exchange protocols between various devices and the master controller. The master controller is usually a PC, located in an explosion safe area. The default protocols are MODBUS RTU for RS485 links and MODBUS TCP for Ethernet links.

Specification

Type of Explosion-Proof Design		Associated apparatus intended for operation in explosive atmospheres
Special Marking of Explosion Protection		I M1 Ex ia op is I Ma
ATEX Certificate Number		OBAC 08 ATEX 017X
Supply Voltage (U_n)		11 – 17 VDC
Maximum Current Consumption (I_max)		690 mA
Communication Interfaces for Interfacing Devices
Interface Type A		RS485
Interface Type B		RS485
Wired Ethernet Interface		Twisted-pair cable UT5, 100 Mbit/s
Fiber Optic Ethernet Interface		Single-mode fiber, 100 Mbit/s, SC or FC connector
RS485 Interface Parameters
Transmission speed		115200 kb/s
Intrinsic safety level		“ia”
Number of devices on shared line		4
Maximum transmission range		1000 m
Ethernet Interface Parameters (Twisted Pair)
Number of ports		1
Connector type		RJ45
Transmission speed		100 Mbit/s
Maximum range		100 m
Safety level		“op is”
Ethernet Interface Parameters (Fiber Optic)
Number of ports		1
Connector type		SC, FC
Fiber type		Single-mode
Transmission speed		100 Mbit/s
Maximum range		20 km
Safety level		“op is”
Power Input		Uᵢ = 17 V, Lᵢ ≈ 0 µH, Cᵢ ≈ 0 µF
Power Outputs (+12 VDC, GND)		Intrinsically safe circuits at the safety level guaranteed by the power supply: U_o = Output voltage of the power supply I_o = Output current of the power supply L_o = Inductance of power supply – cable inductance (L_c) C_o = Capacitance of power supply – cable capacitance (C_c)
Approval According to Certificate		The ZK EX Communication Unit is intended for use in underground workings of mining facilities in areas endangered by methane and coal dust explosions.
Maximum Cross-Section of Connected Cable		1.5 mm²
Number/Type of Cable Glands		6 pcs / WKM-M24 Φzk (9–15)
Dimensions Without Cable Glands and Power Supply (W × H × D)		380 × 250 × 160 mm
Overall Dimensions (W × H × D)		380 × 358 × 160 mm
Net Weight		Approx. 13.5 kg
Enclosure Protection Rating		IP65
Environmental Conditions for Fiber Optic Ethernet Interface
Ambient temperature		+5 to +40°C
Relative humidity (non-condensing)		< 95% at 40°C
Atmospheric pressure		700–1060 hPa
Operating position		Any