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PROBUS – I/O Modules

PB6AIIS – 6 Current Input Module Fully Isolated

The PB6AIIS is a six channel 16 bit 0(4)-20mA input module. The inputs are fully isolated from input to logic and between inputs. This module is ideal for monitoring existing 4-20mA current loops which are isolated from each other and cannot be connected to a common point of reference.

The standard setting for the PB6AIIS module is 0 - 20mA input current which represents an output value of 0 - 4095 (12 bits) in the corresponding Modbus register. To obtain an output value of 0 to 4095 for an input signal of 4 to 20mA the input type must be programmed into the Modbus registers. This module can also be configured for a 0 – 20.000mA input range or +/- 20.000mA input. The module also supports 16 bit ranges.


Analog Inputs 6
Type Differential
Current 0-20mAdc
Resolution 16 bit
Sample rate No. of inputs enabled X 180ms
Input Impedance 22 Ohms
Isolation (Inter Channel) 350VAC (Pk-Pk)
Drift 100 ppm/deg.C typ.
Accuracy 0.2 % of span
Isolation (Field & Logic) 1500VAC RMS




PT8AIIS – 8 Current Input Module Fully Isolated
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