Filter
Top Products
Chapter 3
Chapter 3 I/O Modules
3-3
3.1 ADAM-4011/4011D Thermocouple Input Modules
The ADAM-4011/4011D Thermocouple Input Modules use a
microprocessor-controlled integrating A/D converter to convert sensor
voltage, current or thermocouple signal into digital data. The digital
data is then translated into either two’s 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 ADAM-4011/4011D Thermocouple Input Modules offer signal
conditioning, A/D conversion, ranging, and RS-485 digital
communication functions. They protect your equipment from power
surges at the ground terminal 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 opened 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 digits LED display on the back of the ADAM-4011D lets
you monitor the 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, easy installation, and
direct availability of process data. For critical process monitoring, this
module is the ideal choice.
Digital Input/Output
The ADAM-4011/4011D Thermocouple 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 may be used to 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.