I/O Modules
3-2 ADAM 4000 Series User's Manual
3.1 ADAM-4011/4011D/4012/4013/4015 Analog Input
Modules
Analog input modules use a microprocessor-controlled integrating A/D
converter to convert sensor voltage, current, thermocouple, or RTD signals
into digital data. The digital data is then translated into either engineering
units, twos complement hexadecimal format or percentage of full-scale range
(FSR) according to the module’s configuration. When prompted by the host
computer, the data is sent through a standard RS-485 interface.
The Analog Input Modules offer signal conditioning, A/D conversion,
ranging, and RS-485 digital communication functions. They protect your
equipment from ground loops and power surges by providing opto-
isolation of the A/D input and transformer based isolation up to 3000 V
DC
.
(ADAM-4011 has transformer-based isolation up to 500 V
DC
)
Open Thermocouple Detection and Input Surge Protection
(ADAM-4011D only)
The ADAM-4011D provides an open thermocouple detection function.
Users can use a simple command to detect whether the thermocouple is
open or closed. The module also provides surge protection on its input
channel. Internal high speed transient suppressor on its input channel
protects the module from dangerous spikes and voltages.
Front Panel LED Indicator (ADAM-4011D only)
The 4½ digit LED display on the back of the ADAM-4011D lets you
monitor process readings right at their source. The module displays
readings in a wide variety of formats as well as high-low alarm messages.
The ADAM-4011D offers flexibility, ease of installation and direct availabili-
ty of process data. For critical process monitoring, this module is the ideal
choice.
Digital Inputs/Outputs (Except ADAM-4013)
Analog input modules also contain two digital outputs and one digital
input. Outputs are open-collector transistor switches that may be controlled
by the host computer. They can control solid-state relays which in turn may
control heaters, pumps, and other electrical powered equipment. The digital
inputs may be read by the host computer and used to sense the state of a
remote digital signal.
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