ICP DAS tM-AD2 User Manual

Features

2-channel Single-ended Inputs

Voltage Inputs and Current Inputs

120 VDC Overvoltage Protection

Resolution: 14/12 bits

Adjustable Sampling Rate

4 kV ESD and EFT Protecton

3 kV Surge Protection

Dual Watchdog

2500 VDC Intra-module Isolation

Cost-eff ective

tM-AD2

2-channel Isolated Analog Input Module

Introduction

The tM-AD2 is an analog input module that includes 2 single-ended analog input channels and provides a
programmable input range on all analog inputs (0 ~ 500 mV, 0 ~ 1 V, 0 ~ 2.5 V, 0 ~ 5 V, 0 ~ 10 V, 0 ~ 20
mA, 4 ~ 20 mA). It provides a high overvoltage protection of 120 VDC. The sampling rate of the tM-AD2 is
adjustable and is available in either fast or normal mode and It also provides 4 KV ESD protection as well as
2500 VDC intra-module isolation.

CPU Module

Watchdog Timer

Isolation

Intra-module Isolation 2500 V

EMS Protection

EFT (IEC 61000-4-4) ±4 kV for Power

EFT (IEC 61000-4-2)

LED Indicators

Status 1 x Power and Communication

COM Ports

Ports 1 x RS-485

Baud Rate 1200 ~ 115200 bps

Data Format (N, 8, 1), (N, 8, 2), (O, 8, 1), (E, 8, 1)

Protocol DCON, Modbus/RTU, Modbus/ASCII

Power

Reverse Polarity Protection Yes

C

onsumption 0.7 W Max.

Powered from Terminal Block

Mechanical

Dimensions (W x L x H) 52 mm x 98 mm x 27 mm

Installation DIN-Rail Mounting

Environmental

Operating Temperature -25 ~ +75 °C

Storage Temperature -30 ~ +75 °C

Humidity 10 ~ 95% RH, Non-condensing

Yes, Module (2.3 seconds), Communication
(Programmable)

DC

±4 kV Contact for Each Terminal
±8 kV Air for Random Point

Yes, 10 ~ 30 V

DC

Applications System Specifications

• Industrial Automation

• Industrial Machinery

• Building Automation

• Food and Beverage Systems

• Semiconductor Fabrication

• Control Systems

I/O Specifications

Analog Input

Channels 2 Single-ended

Type

Range

Resolution

Accuracy

Sampling Rate

Input Impedance

Overvoltage Protection 120 VDC

Overcurrent Protection Yes, 50 mA at 110 V

Individual Channel Confi guration Yes

Open Wire Detection Yes

Zero Drift ±20 μV/°C

Span Drift ±25 ppm/°C

Voltage
Current
0 ~ 500 mV, 0 ~ 1 V, 0 ~ 2.5 V, 0 ~ 5 V,
0 ~ 10 V, 0 ~ 20 mA, 4 ~ 20 mA
Normal Mode: 14-bit
Fast Mode: 12-bit
Normal Mode: ±0.1%
Fast Mode: ±0.5%
Normal Mode: 10 Hz
Fast Mode: 200 Hz
Voltage: 10 MΩ
Current: 125 Ω

DC

ICP DAS CO., LTD Website: http://www.icpdas.com Vol.

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Internal I/O Structure

Pin Assignments

DATA+

DATA-

+Vs

GND

Frame

Ground

INIT

EEPROM

Embedded

Controller

RS-485

Interface

Power

Regulator

+5V

Isolation

ADC

MUX

Vin0

Vin1

Iin0

Iin1

AGND

N/A

N/A

N/A

N/A

DATA+

DATA-

DATA+

AGND

DATA-

Iin1

+Vs

Vin1

GND

AGND

F. G .

Iin0

Vin0

Wire Connections

Voltage Input (Single-ended Mode)

+

V

mV/V

-

Current Input (Single-ended Mode)

+

mA

-

Vin+

AGND

Vinx

Iinx

AGND

Dimensions (Units: mm)

27

10.2

19

35.4

23

6.6

Left Side View Front View

98

52

77.4

Ordering Information

tM-AD2 CR 2-channel Isolated Analog Input Module with High Voltage Protection (RoHS)

ICP DAS CO., LTD Website: http://www.icpdas.com Vol.

2021.3

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