Similar to the digital I/O modules, analog modules are the main interface between the control process and the MELSEC iQ-R Series automation system. The main differences are that they have been designed to interface with sensors that process varying voltage and current signals instead of digital binary signals, and convert those signals into binary data that the control system can use. The MELSEC iQ-R Series range of analog modules includes features such as high-speed sampling (5 µs/4CH) coupled with 16 bit high-resolution (1/32,000) digital output signals, simultaneous multi-channel conversion (no. of channels increased with inter-modular synchronization), galvanic channel isolation and disconnection detection, and HART® communication with field devices, thereby enabling highly precise and stable analog signal processing.
Channel input or output error threshold values are easily settable within GX Works3 ensuring the detection of disconnected channel(s), reducing downtime and saving on maintenance costs.
The "-G" suffix modules include internal galvanic channel isolation that can improve noise interference capabilities without requiring an additional signal converter as well as protecting the internal module components from a short circuit.