ABB RMDE-01, Product Manual

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Operation principle and hardware
description
What this chapter contains
This chapter describes the operation principle and construction of the RMDE-01 reliability
monitoring device.
RMDE-01 reliability monitoring device
The RMDE-01 reliability monitoring device collects operation and fault data from the drive
control units and the environmental sensors. The device sends the data to ABB Ability cloud
or customer data center.
The RMDE-01 enclosure contains NETA-21 modules (remote monitoring tool) and NEXA-21
modules (extension unit for the remote monitoring tool). The modules set a gateway that
converts drive communication protocols into Modbus/TCP and conveys the data to a cellular
modem and antenna for mobile data transfer to the server.
The number of the NETA and NEXA modules vary from two to four depending on the
customer order:
• a two-module version contains two NETA-21 and two NEXA-21 modules
• a four-module version contains four NETA-21 and four NEXA-21 modules.
The sensors are connected to the NEXA modules via a USB link. Drives must be connected
to NETA modules via the Ethernet link or using a DDCS fibre optic link.
A node is a control unit of the drive. In large drives, there are several control units: one for
the supply unit, and one for each inverter units.
The RMDE-01 delivery includes antenna, ambient temperature and humidity sensors. These
must be installed and connected by the user on site.
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