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SCM5B40

Analog Voltage Input Signal Conditioners, Bandwidth 10 kHz

Each SCM5B40 wide bandwidth voltage input module provides a single channel of analog input which is amplified, isolated, and converted to a high-level analog voltage output. This voltage output is logic-switch controlled, allowing these modules to share a common analog bus without the requirement of external multiplexers.

The SCM5B modules are designed with a completely isolated computer side circuit which can be floated to ± 50 V from Power Common, pin 16. This complete isolation means that no connection is required between I/O Common and Power Common for proper operation of the output switch. If desired, the output switch can be turned on continuously by simply connecting pin 22, the Read-Enable pin, to I/O Common, pin 19.

The input signal is processed through a wide bandwidth pre-amplifier on the field side of the isolation barrier. After amplification, the input signal is chopped by a proprietary chopper circuit. Isolation is provided by transformer coupling, again using a proprietary technique to suppress transmission of common mode spikes or surges.
The module is powered from + 5 VDC, ± 5%.

A special input circuit on the SCM5B40 modules provides protection against accidental connection of power-line voltages up to 240 VAC.

Circuit diagram Dataforth SCM5B40

Block Diagram SCM5B40



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7 Modules for Type SCM5B40:

ModuleInputDescription
SCM5B40-01 -10 to +10 mV SCM5B40 Isolated Analog Voltage Input Module, Wide Bandwidth, with Voltage-Output
SCM5B40-02 -50 to +50 mV SCM5B40 Isolated Analog Voltage Input Module, Wide Bandwidth, with Voltage-Output
SCM5B40-03 -100 to +100 mV SCM5B40 Isolated Analog Voltage Input Module, Wide Bandwidth, with Voltage-Output
SCM5B40-04 -10 to +10 mV SCM5B40 Isolated Analog Voltage Input Module, Wide Bandwidth, with Voltage-Output
SCM5B40-05 -50 to +50 mV SCM5B40 Isolated Analog Voltage Input Module, Wide Bandwidth, with Voltage-Output
SCM5B40-06 -100 to +100 mV SCM5B40 Isolated Analog Voltage Input Module, Wide Bandwidth, with Voltage-Output
SCM5B40-07 -1 to +1 V SCM5B40 Isolated Analog Voltage Input Module, Wide Bandwidth, with Voltage-Output

Specifications

top
  • Input: mV-Signal
  • Output: 0V…+5V / 0V…+10V / -5V…+5V / -10V…+10V
  • Bandwidth 10 kHz
  • Isolation 1500 Vrms
  • Input protection 240 Vrms
  • Input Resistance 200 MOhm
  • Accuracy ± 0.03%
  • Linearity ± 0.01%
  • ANSI/IEEE C37.90.1 Input protection
  • CMR 100dB
  • True 3-way isolation
  • NMR: 120dB / Decade > 10 kHz
  • Power Supply +5 VDC
  • Operating Temperature Range -40°C … +85°C
  • Mix and Match Types on Backpanels possible
  • Dimensions 58 x 57 x 15 mm
  • Optional DIN Rail Mounting
  • CSA certified, CE and ATEX compliant
  • Wide range of accessories
  • Special Solutions on request