WHS-TAI08 series 8-channel analog input module

NegotiableUpdate on 09/22

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Overview

WHS-TAI08 series 8-channel analog input module

Product Details

1.1 Overview

WHS-TAI08 is10M/100M adaptive network type 8Channel analog input (AI) module. The internal circuit of the module is isolated from the on-site analog input signal using optocouplers. The principle diagram is shown in Figure 1.1:

Figure 1.1WHS-TAI08 Principle Block Diagram

WHS-TAI08 has 4 branch models, each supporting 0-5V input（WHS-TAI08-V), 0~10V input（WHS-TAI08-U), 4-20mA input（WHS-TAI08-I), 0-20mA input（WHS-TAI08-X）。WHS-TAI08It has the function of actively uploading analog status (when the active upload mode is enabled, it can support 5 MODBUS TCP client connections; When the active upload mode is turned off, it can support 6 MODBUS TCP client connections; In the case of static IP addresses, it can support 7 MODBUS TCP client connections, etc；WHS-TAIThe resolution of 08 is 12 bits; AI has wire breakage detection function; The analog signal amplification sampling circuit is isolated from the main circuit, effectively suppressing on-site interference;Cortex-M3High speed processing chips with strong data processing capabilities; Watchdog circuit design, capable of automatic reset in case of accidentsWHS-TAI08， ESD、 Overvoltage and overcurrent protection design ensures long-term stable and reliable operation of the system.

Meanwhile, for industrial applications,WHS-TAI08 adopts isolationEthernet RJ45Communication interface design to avoid signal interference in industrial sitesWHS-TAIThe impact of communication interface 08;Has good scalability, network parameters can be freely configured on-site as static fixed IP or dynamic DHCP to automatically obtain IP;Standard ModbusTCPCommunication protocol,Support multiple commonly used function codes,Enable users to easily access a wide range of SCADA software, HMI devices, and support ModbusTCPIntegration and application of PLC and other devices and systems in the protocol；Equipped with communication timeout detection function; And we provide free protocols and sample code to make your secondary development more flexible, convenient, and efficient.

Product Features:

(1) 8-channel analog input, with four types: 0~5V, 0~10V, 0~20mA, and 4~20mA (please specify the specific input type when ordering);

(2) Analog input is completely isolated from the system;

(3) 12 bit resolution, 0.2% measurement error;

(4) AI input has a disconnection detection function;

(5) Modbus TCP communication protocol, supporting 3, 4, 6, and 16 function codes;

(6) Support static fixed IP and DHCP dynamic IP acquisition;

(7) Support active upload mode, which can be configured as two working modes: analog status change upload and timed upload;

(8) Support multiple TCP client connections for communication, up to 7 upper computers can collect data simultaneously;

(9) The power supply has non-polar input function;

(10) Has good overcurrent, overvoltage, and reverse connection protection functions;

(11) Support the function of forcibly initializing module IP addresses and other parameter settings under any network parameters within the broadcast domain.

Application fields:

（1）Development of medical and industrial products;

（2）Remote communication for industrial control teaching applications;

（3）Monitoring of power environment in the computer room; Mobile data collection station;

（4）Intelligent building control data, security engineering and other application systems;

（5）Industries such as machinery, fire protection, petrochemicals, construction, electricity, transportation, etcEthernet Modbus TCP protocolIndustrial automation control system.

1.2 Technical Specifications

analog quantity input interface （AI）	Branch model	WHS-TAI08-V	WHS-TAI08-U	WHS-TAI08-I	WHS-TAI08-X
	inputscope	0-5V	0-10V	4-20mA	0-20mA
	number of channels	8（System isolation voltage 1500VDC）
	input impedance①	10MΩ	20kΩ	250 Ω
	input protection	60VDC		——②
	ADC resolution	12 digits
	measurement error	0.2%(25 ℃, full range)
	temperature drift	Less than 50ppm/℃
	Register refresh rate	100Hz/channel (sampling frequency 1000Hz/channel)
network communication parameters	interface type	RJ45 Ethernet port
	rate	10/100M adaptive
	communication protocol	Modbus TCP / Modbus UDP
	Embedded Protocol	ARP，ICMP，IP，TCP，UDP，DHCP，DNS
	Setting method	set up programs
Ethernet portprotect	esd protection	15KV
	Isolation Voltage	1500VDC
	surge protection	600W
Power parameters	Power Specifications	12～24V DC，Non-polar access
	power consumption	<2.5W（24VDC：Imax=100mA）
	surge protection	600W
	Power overvoltage and overcurrent	60V，800mA
working environment	Operating Temperature	-25～75℃
	Storage temperature	- 40～125℃
	relative humidity	5～95%RH， Not condensing
other	size	124.5mm72.0mm43.5mm(including terminals and card slot boards)
	Shell material	ABS engineering plastic
	Installation method	standardAINRail installation or screw installation
	warranty	1year warranty

The number of supported MODBUS TCP connections is shown in the following table:

	Automatically obtain IP address	Fixed IP address
Enable active upload	5 of them	6 of them
Prohibit active uploading	6 of them	7 of them

Note ①Due to the use of active input impedance technology in this product, it is incorrect to use a multimeter to test the input impedance of a voltage input module when power is off. The correct way to measure the input impedance is to connect the measured signal source in series with a resistor of about 500K and then connect it to this device. After powering on, test the voltage at both ends of the connected resistor. According to Ohm's law, the input impedance can be measured.

Note 2For current type input devices, do not use analog input terminals（AI+TheAI-）Access greater than40mADo not use the current source directlyAI+TheAI-Up merge greater than10VVoltage source, as this can cause a decrease in equipment accuracy and even damage to the equipment.