Advantech Adam - 4021, User Manual, Page: 38 / 286

ADAM-4000 Series User Manual 26
3.3 ADAM-4017/4017+/4018+ 8-channel Analog
Input Modules
3.3.1 ADAM-4017 8-channel Analog Input Module
The ADAM-4017 is a 16-bit, 8-channel analog input module that provides program -
mable input ranges on all channels. This module is an extremely cost-effective solu -
tion for industrial measurement and monitoring applications. Its opto-isolated inputs
provide 3000 V
DC
of isolation between the analog input and the module, and protect
the module and peripherals from damage due to high input-line voltages.
The ADAM-4017 offers signal conditioning, A/D conversion, ranging and RS-485 dig
-
ital communication functions. The module protects your equipment from power
surges at the ground terminal by providing opto-isolation of A/D input and up to 3000
V
DC
transformer based isolation.
The ADAM-4017 uses a 24-bit microprocessor-controlled sigma-delta A/D converter
to convert sensor voltage or current into digital data. The digital data are then trans -
lated into engineering units. When prompted by the host computer, the module sends
the data to the host through a standard RS-485 interface.
3.3.2 ADAM-4017+ 8-channel Differential Analog Input Module
Similar to its counterpart, ADAM-4017+ enables eight differential channels with multi -
ple input ranges. This multi-channel/multi-range structure allows channels with differ -
ent input ranges at the same time. It provides a solution to the demand for more
analog input channels.
For example, channel 1 can have the range ± 5V meanwhile the others are ± 10V
and ± 20 mA.
Instead of leaving two single-ended channels in ADAM-4017 module due to the limit
number of pins, ADAM-4017+ uses a switch to switch AGND and INIT* to Vin6- and
Vin7- respectively to allow 8- channel input. Moreover, the ADAM-4017+ has been
expanded to accept 4 ~ 20 mA, so the user can employ it in various applications
3.3.3 ADAM-4018+ 8-channel Thermocouple Input Module
ADAM-4018+ enables eight differential channels with multiple input types. This multi -
channel/ multi-type structure allows synchronizing channels with different types of
input. For example, channel 1 has K type of input meanwhile the others have R and S
types. It provides a solution to the demand for more thermocouple input channels.
ADAM-4018+ is an 8-channel T/C input module. Compared with the universal analog
input module ADAM-4019, it is more dedicated to T/C and 4 ~ 20 mA inputs for those
with special requests. It improves ADAM-4018 with the traditional design of six differ -
ential and two single-ended channels. It also enhances the steadiness and reliability
of the wiring. Normally, broken external wires will lead to an inaccurate current value.
ADAM-4018+, however, provides burnt-out detection that allows users to fix the prob -
lems easily. ADAM 4018+ has build in shunt resistor.