I-87018W/I-87018RW
8-channel Thermocouple Input Module |
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| Model: I-87018W |
Model: I-87018RW |
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- 8-channel Analog Input
- Current Input, Voltage Input and Thermocouple Input
- High Resolution: 16-bit
- 3000 VDC Intra-module Isolation
- Open Thermocouple Detection
- 240 Vrms Overvoltage Protection
- 4 kV ESD Protection
- RoHS Compliant
- Wide Operating Temperature Range: -25 to +75°C
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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. |
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- Building Automation
- Factory Automation
- Machine Automation
- Remote Maintenance
- Remote Diagnosis
- Testing Equipment
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| Model |
I-87018W |
I-87018RW |
| Analog Input |
| Channels |
8 |
| Wiring |
Differential |
| Sensor Type |
±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) |
| -3dB Bandwidth |
15.7 Hz |
| Zero Drift |
±0.5 μV/°C |
±10 μV/°C |
| Span Drift |
±25 ppm/°C |
| Analog Output Response Time |
10 ms per channel |
| Common Mode Rejection |
150 dB |
| Normal Mode Rejection |
100 dB |
| Input Impedance |
>400 kΩ |
| Open Wire Detection |
- |
Yes (Thermocouple) |
| Overvoltage Protection |
-35 VDC ~ +35 VDC |
240 Vrms |
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| 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. |
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| Model |
I-87018W |
I-87018RW |
| Communication |
| Interface |
RS-485 |
| Format |
N, 8, 1 |
| Baud Rate |
1200 ~ 115200 bps |
| Protocol |
DCON |
| Dual Watchdog |
Yes, Module (1.6 Seconds), Communication (Programmable) |
| LED Indicators/Display |
| System LED Indicator |
1 LED as Power/Communication Indicator |
| I/O LED Indicator |
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16 LEDs as High/Low Alarm Signals |
| Isolation |
| Intra-module Isolation, Field-to-Logic |
3000 VDC |
| EMS Protection |
| ESD (IEC 61000-4-2) |
±4 kV Contact for each Terminal |
| ±8 kV Air for Random Point |
| Power |
| Power Consumption |
0.8 W Max. |
0.6 W Max. |
| Mechanical |
| Dimensions (W x L x H) |
30 mm x 102 mm x 115 mm |
| Environment |
| Operating Temperature |
-25 ~ +75°C |
| Storage Temperature |
-40 ~ +85°C |
| Humidity |
10 ~ 95% RH, Non-condensing |
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| I-87018W-G CR |
8-channel Thermocouple Input Module (Gray Cover) (RoHS) |
| I-87018RW-G CR |
8-channel Thermocouple Input Module with High Overvoltage Protection (Gray Cover) (RoHS) |
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| 125Ω, 0.1% DIP Resistors |
Resistor used for Current Type I-87017/I-87018 Series Modules |
| SG-770 CR |
7-channel Differential or 14-channel Single-ended Surge Protector (RoHS) |
| SG-3000 series |
Signal Conditioning Modules for Thermocouple, RTD, DC Voltage, DC Current and Power Input |
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