I-87018W-G
8-ch Thermocouple Input Module
Features
• 8-channel Analog Input
• Current Input, Voltage Input and Thermocouple Input
• High Resolution: 16-bit
• 240 Vrms Overvoltage Protection
Introduction
The I-87018W is an 8-channel analog input module that provides current input and voltage input, as well as thermocouple input. The I-87018RW is an upgraded version of I-87018W with an extremely highquality protection mechanism where the overvoltage protection can be as high as 240 Vrms. The input type can be set to either current or voltage, as well as thermocouple. The only difference between the two modules is that the I-87018RW is more suitable for critically harsh environments. Moreover, the newly-added open thermocouple detection feature makes the I-87018RW more attractive than ever. Both the I-87018W and the I-87018RW also features 4 kV ESD protection and 3000 VDC intra-module isolation.
Applications
• Building Automation
• Factory Automation
• Machine Automation
• Remote Maintenance
• Remote Diagnosis
• Testing Equipment
Ordering Information
| PRODUCT SERIES | DESCRIPTION | QNT. | INQUIRY |
|---|---|---|---|
This combination include other products.
Similar Products
| CPU Module | |
|---|---|
| Watchdog Timer | Yes, Module (1.6 Seconds), Communication (Programmable) |
| Isolation | |
|---|---|
| Intra-module Isolation | 3000 VDC |
| EMS Protection | |
|---|---|
| ESD (IEC 61000-4-2) | ± 4 kV Contact for Each Terminal ±8 kV Air for Random Point |
| LED Indicators | |
|---|---|
| Status | 1 x Power and Communication |
| Analog Input | |
|---|---|
| Channels | 8 |
| Type | Voltage、Current、Thermocouple |
| Sensor Type | (J, K, T, E, R, S, B, N, C, L, M, LDIN43710 |
| Range | ±15 mV, ±50 mV, ±100 mV, ±500 mV, ±1 VDC, ±2.5 VDC -20 mA ~ +20 mA (Requires Optional External 125 Ω Resistor) Thermocouple (J, K, T, E, R, S, B, N, C, L, M, LDIN43710) |
| Resolution | 16-bit |
| Accuracy | ±0.1% of FSR |
| Sampling Rate | 10 Hz (Total) |
| Bandwidth | 15.7 Hz |
| Input Impedance | >400 kΩ |
| Common Mode Rejection | 150 dB |
| Normal Mode Rejection | 100 dB |
| Overvoltage Protection | -35 VDC ~ +35 VDC |
| Zero Drift | ±0.5 μV/°C |
| Span Drift | ±25 ppm/°C |
| COM Ports | |
|---|---|
| Ports | 1 x RS-485 |
| Baud Rate | 1200 to 115200 bps |
| Data Format | N, 8, 1 |
| Protocol | DCON |
| Power | |
|---|---|
| Consumption | 0.8 W Max. |
| Mechanical | |
|---|---|
| Dimensions (mm) | 30 x 102 x 115 (W x L x H) |
| Environment | |
|---|---|
| Operating Temperature | -25 ~ +75 °C |
| Storage Temperature | -40 ~ +85 °C |
| Humidity | 10 ~ 95% RH, Non-condensing |
Specification Memo
Note: ICPDAS recommends selecting the I-87018ZW module for high accurate thermocouple measurement that features automatic cold-junction compensation for each channel to ensure temperature output consistency and stable temperature output in the field.
