How to quickly design and deploy IIoT-ready machines
phase loss, phase sequence, asymmetry, undervoltage, overvoltage, under-frequency, and over-frequency. Using the NFC app, designers can use AND, OR, and NOT logic to form custom monitoring combinations for the two individually configurable relay outputs. For simpler machines that only need overvoltage monitoring, designers can turn to the RM22UA21MR (Figure 4). This
Figure 3: This Modicon M262 PLC supplies IIoT-ready machine-to-cloud and machine-to-plant Ethernet connectivity. (Image source: DigiKey)
The TM4 bus on the Modicon M262 family supports up to 3 communication expansion modules. Profibus DP (TM4PDPS1) and Ethernet (TM4ES4) expansion modules can be used in various combinations to a maximum of three modules.
current, voltage, phase, frequency, speed, temperature, pump control, and even liquid level. Quick and accurate identification of abnormalities can increase uptime and reduce the need for unscheduled maintenance in applications like pumping, water processing, hoists and lifts, packaging systems, and textile machines. Harmony Control Relays are available with a wide range of functions to suit specific application needs. Model RMNF22TB30 is a three- phase relay with integrated near- field communications (NFC). It can monitor seven parameters:
Nixing abnormalities
Sometimes, machines, including IIoT-ready machines, must be protected from abnormal conditions. That’s where Harmony Control Relays come in. They can monitor both electrical and mechanical conditions and identify abnormalities related to
Figure 4: Single-phase overvoltage control relay with a switching capacity of 2 kVA. (Image source: DigiKey)
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