SCM9B-D100: DIN Rail Mount Sensor-to-Computer Modules. Dataforth

Specialists in data acquisition, signal conditioning and data communication

English

The SCM9B-D100 Sensor to Computer Modules are a family of data acquisition modules that convert analog input signals to digital data and transmit via RS-485 to a controller which may be a computer or other processor-based equipment. The modules can measure temperature, pressure, voltage, current, digital input or digital output signals. The modules provide direct connection to a wide variety of sensors and perform all signal conditioning, scaling, linearization and conversion to either linearized ASCII data values or Modbus RTU data values.

Features such as address, data rate, parity, echo, etc., are selectable using simple commands over the RS-485 port. The selections are stored in nonvolatile EEPROM which maintains data even after power is removed.

Data is acquired on a per channel basis so you only buy as many channels as you need. The modules can be mixed and matched to fit your application. They can be placed remote from the host and from each other. You can string up to 247 modules on a twisted pair of wires by using RS-485 with repeaters.

All modules are supplied with screw terminal plug connectors. The connectors allow system expansion, reconfiguration or repair without disturbing field wiring.

Utility software is available from Dataforth to make the D100 easier to learn and use. The software is provided at no charge on request with a purchase order and is not copy protected.

Complete Sensor to RS-485 Interface
500Vrms Analog Input Isolation
15 Bit Measurement Resolution
Continuous Self-Calibration; No Adjustments of Any Kind
Programmable Digital Filter
Requires +5VDC Supply
Transient Suppression on RS-485 Communications Lines
Screw Terminal Plug Connectors Supplied
CE Compliant

DIN Rail Mount Sensor-to-Computer Modules

SCM9B-D11x Voltage Inputs

Part Number	Input Range	Output Range	Bandwidth	Mechanical Format	Isolation Voltage
SCM9B-D110 Order Now	-10 to +10 mV	RS-485	programmable	DIN rail	500 Vrms
SCM9B-D111 Order Now	-100 to +100 mV	RS-485	programmable	DIN rail	500 Vrms
SCM9B-D112 Order Now	-1 to +1 V	RS-485	programmable	DIN rail	500 Vrms
SCM9B-D113 Order Now	-5 to +5 V	RS-485	programmable	DIN rail	500 Vrms
SCM9B-D114 Order Now	-10 to +10 V	RS-485	programmable	DIN rail	500 Vrms
SCM9B-D115 Order Now	-100 to +100 V	RS-485	programmable	DIN rail	500 Vrms

SCM9B-D125 Current Inputs

Part Number	Input Range	Output Range	Mechanical Format	Internal Power Supply	Isolation Voltage	Isolation Type	Accuracy	Supply Voltage
SCM9B-D125 Order Now	4 to 20 mA	RS-485	DIN rail	N/A	500 Vrms	Transformer / Optical 2-way	0.04% of FS	+5VDC ±5%

SCM9B-D13x Thermocouple Inputs

Part Number	Thermocouple Type	Output Range	Input Temperature Range	Mechanical Format	Isolation Voltage	Isolation Type	Accuracy
SCM9B-D131 Order Now	J	RS-485	-200 to 760 °C	DIN rail	500 Vrms	Transformer / Optical 2-way	±1C Max
SCM9B-D132 ² Order Now	K	RS-485	-150 to 1250 °C	DIN rail	500 Vrms	Transformer / Optical 2-way	±1C Max
SCM9B-D133 Order Now	T	RS-485	-200 to 400 °C	DIN rail	500 Vrms	Transformer / Optical 2-way	±1C Max
SCM9B-D134 Order Now	E	RS-485	-100 to 1000 °C	DIN rail	500 Vrms	Transformer / Optical 2-way	±1C Max
SCM9B-D135 Order Now	R	RS-485	0 to 1750 °C	DIN rail	500 Vrms	Transformer / Optical 2-way	±2.5C Max
SCM9B-D136 Order Now	S	RS-485	0 to 1750 °C	DIN rail	500 Vrms	Transformer / Optical 2-way	±2.5C Max
SCM9B-D137 Order Now	B	RS-485	0 to 1820 °C	DIN rail	500 Vrms	Transformer / Optical 2-way	±2.5C Max
SCM9B-D138 Order Now	C	RS-485	0 to 2315 °C	DIN rail	500 Vrms	Transformer / Optical 2-way	±2.5C Max

² ... Discontinued

SCM9B-D14x Thermistor Inputs

Part Number	Type	Output	Input Temp. Range	Resolution	Mechanical Format	Isolation Voltage	Isolation Type	Accuracy
SCM9B-D145 Order Now	2252 Ohm at 25°C	RS-485	0 to 100 (°C)	0.01°C or F	DIN rail	500 Vrms	Transformer / Optical 2-way	±0.1°C
SCM9B-D146 Order Now	TD Series	RS-485	-40 to 150 (°C)	0.1°C or F	DIN rail	500 Vrms	Transformer / Optical 2-way	±0.2°C

SCM9B-D15x

Part Number	Excitation Voltage	Input Range	Output Range
SCM9B-D151 Order Now	5.0 V	0 to +30 mV	RS-485
SCM9B-D152 Order Now	10.0 V	0 to +30 mV	RS-485
SCM9B-D153 Order Now	5.0 V	0 to +100 mV	RS-485
SCM9B-D154 Order Now	10.0 V	0 to +100 mV	RS-485

SCM9B-D161 Timer/Frequency Inputs

Part Number	Input Range	Output Range	Zero Crossing Hysterisis	Mechanical Format	Isolation Voltage	Isolation Type
SCM9B-D161 Order Now	1 to 20 kHz	RS-485	adjustable 10mV - 1.0V	DIN rail	500 Vrms	Transformer / Optical 2-way

SCM9B-D17x Digital Input/Outputs

Part Number	Description
SCM9B-D171 Order Now	6 Digital Inputs/RS-485 Output
SCM9B-D172 Order Now	6 Digital Outputs/RS-485 Output

Frequently Asked Questions

Can Dataforth provide calibration reports for modules I purchased?

Yes we can provide calibration reports for the modules that you purchased.

You can either
a) visit https://www.dataforth.com/TestDataReport.aspx to search for Test Report Datasheets by Serial Number or
b) you can send us a list of model numbers and their serial numbers to support@dataforth.com

Analog Devices announced a last time buy and discontinuance of their signal conditioning modules. Can I replace them with Dataforth signal conditioning modules?

Yes, in general, Dataforth signal conditioning modules are a direct replacement for all Analog Devices signal conditioning modules. e.g. "SCM5B35-xx: Linearized 4-Wire RTD Input Modules" will replace Analog Devices "5B35: Isolated 4 Wire RTD Input Signal Conditioning Module".

Please note that Dataforth signal conditioning modules are RoHS II compliant.

How does the load resistance of a module affect the noise at the output?

Noise at the output of a module is independent of load resistance.

If the input range of my signal conditioner is -1V to +1V and the output range is 0 to 10V, does this mean that it ignores polarity?

A signal conditioner with these I/O ranges does not mean that the module ignores the polarity of your voltage input. The output of voltage input modules are scaled linearly, meaning an input of -1V would correspond to an output of 0V, an input of 0V would correspond to an output of 5V, an input of +1V would correspond to an output of 10V, and so on.

How do I convert an RMS voltage to its corresponding peak voltage?

To convert an RMS voltage to its corresponding peak voltage, you simply take the RMS voltage value and multiply it by the square root of 2, or roughly 1.414.

For example, 1500Vrms corresponds to a peak voltage of 1500 * 1.414 = 2121 Vp

Due to resource constraints on my computer, I'm unable to open the three dimensional CAD models provided on your website. Does Dataforth provide two demensional CAD models for download as well?

Two dimensional CAD models can be generated upon customer request. Please contact Customer Service for assistance.

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Dataforth offers a wide range of custom modules for those instances when our standard commercial off-the-shelf (COTS) solutions don't quite meet your specific application needs. Contact Customer Service and Application Support to discuss design guidelines and design feasibility. Customer Service and Application Support can be reached at sales@dataforth.com or +1-800-444-7644.

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