Introduction - Cortalk RMU5 Generic Installation And Configuration Manual

1 Introduction

The RMU5 is a powerful remote monitoring unit with an optional precision GPS interruption controller for use with
cathodic protection rectifiers. Precise timing accuracy and repeatability is attained with GPS and microprocessor
technology. A small physical size and wide operating temperature range make this device ideally suited for use in a
variety of rectifier cabinets.
The basic RMU5 has the following feature set:

High-performance 200MHz ARM9-based processing platform

64MB RAM

32MB Flash storage for OS and applications

Windows Embedded CE 6.0 operating system

Integral health monitoring of internal voltages and temperature

20x4 character wide-temperature range LCD screen for local status monitoring with no additional equipment

10/100Base-T Ethernet for communications backhaul over various data networks

RS-232 MODBUS interface port for attachment to other SCADA RTUs

USB peripheral with RNDIS characteristics for configuration from a PC

USB host for additional USB flash drive or communications expansion

One digital input capable of dry contact or voltage input (optically isolated)

One ground switched digital output with 750mA sinking capability and 12V power

Four galvanically isolated bi-polar analog input channels configurable for +/-158mV, +/-7.5V, and +/-
150VDC ranges

24VAC/DC main power input, used with external Class 2 power transformer or external DC-DC converter

Battery backup allowing up to 8 hours of operation during main power fail conditions

Easy configuration through a PC-based graphical user interface

Remote configuration through available communications channels

Remote firmware updates over appropriate communications channels

Scheduler for future rectifier interruption cycles

Scheduler for input datalogging

Programmable alarm window capability on all input channels

NEMA 4X, IEC529 Type IP65 enclosure for harsh environments

CSA and UL approvals

°
Operation in -40 C to +60
The base product can be augmented through the following optional components:

Optional GPS time synchronized rectifier interruption

Internal Flash drive for datalogging storage (128MB to 8GB, factory installed)

Bluetooth communications for configuration and data retrieval

RS-232 communications expansion interface (same physical connector as MODBUS interface listed above)
o
Iridium SBD satellite modem
o
Skywave Inmarsat D satellite modem
o
V.34 PSTN modem
o
1200/2400 MSK VHF/UHF terrestrial radio modem
o
Third-party radio modems

Sensor expansion bus
o
Galvanically isolated 4 channel analog input module
o
Galvanically isolated 4 channel input + 4 channel output module
o
Isolated DC current sensor
o
High voltage 500V AC analog input module
o
External temperature sensor
o
High impedance analog inputs for reference half-cell measurements
o
Additional modules added in the future as required
This document details the installation and operation of the Mobiltex
MOBILTEX® DATA LTD.
Calgary, Alberta
°
C ambient temperatures
TITLE:
RMU5 Generic Installation and Configuration Guide
DOCUMENT NO.: SHEET:
RMU5-MAN-001
®
RMU5 remote monitoring unit product.
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