Product Brief - Model M1431B MX 8 VC ISO

Maxiflex 8 Channel Isolated VC Input

picarrow 8 Channels of Voltage/Current input
arrow High Inter-channel Isolation
arrow Individual Channel Input Calibration
arrow Four setpoints for each channel


Maxiflex 8 channel ISO VC input module. Inputs may be mixed i.e V or I, current inputs require an external sense resistor. Each channel can have 4 Setpoints High, High High, Low, Low Low and deadband set in config download.


The M1431 8VC ISO module provides 8 voltage or current inputs. The inputs are individually galvanically isolated. This intelligent module is software configurable, and allows each input to be configured for a different input type and range.

The input value can be read as either a scaled percentage value to 2 decimal places, or the actual voltage/current input value as a signed integer to 3 decimal places. eg 0.00% to 100.00% or 1.000 to 5.000V. Over-range and under-range inputs are read as -32768 and 32767 respectively.

Current inputs are converted to voltage using an external resistor placed across the input terminals. This allows the plug-in inpute terminals to be removed without breaking the current loop. The value of resistor used to configurable in the range 50Ω to 500Ω.

Each input has four software settable alarm/trip setpoints and a deadband value. The status of the alarm/trip signals is available as derived digital inputs from the module.

With the aid of an accurate DC voltage source and the M1431A calibration software, the module can be field calibrated by the user if required.

The module may be inserted into any I/O slot in a Maxiflex system.

Inputs are terminated on plug-in screw terminals.

The module can be inserted or removed while the system is powered.

Auto-detection capability allows the CPU to recognise the presence of this module in the system.

All configuration and dynamic data are made available to the system CPU through a module Data Interchange Table. The module is configured by writing the appropriate values to this table, and the dynamic values are read by reading from this table.

Further Literature 
Datasheet
Full specifications and Order Information
Installation Guide
Details of installation requirements and further specifications.
Declaration of Conformity
Compliance Specifications
RoHS Compliance Certificate
RoHS Compliance Certificate with a list of RoHS Compliant Products
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