5 The RMC

5.1 Introduction

The eSite RMC (see figure 5.1) is the complete hybrid site controller for smart control and online monitoring of any eSite Modular site, whether Off/Bad/Good/On-grid. It controls the Converter Units, genset operation and all power-related functions on site, including customer load management and monitoring of the batteries. Together with the incorporated RMS system eSite Tools, site data is analyzed and presented to the user. The RMC readily stays up-to-date by remote software updates and is capable of forwarding site data and reports to other selected platforms.

Figure 5.1. The eSite RMC unit.

The RMC has extensive communication possibilities, enabling communication with other equipment too, e.g. a Li-ion BMS and site specific sensors. The RMC is seamlessly integrated with the eSite Converter Units and associated systems on site.

The RMC can also be independently installed on a site with existing converters of any brand, and will then act as a generic hybrid site controller.

5.2 Remote Communication

The RMC acts as a gateway for storage and configuration of all site data, e.g. fuel level sensors, battery and cabinet temperature, BMS data, etc. It makes sure that data is available to the user via the eSite Tools RMS system, or by API for data extraction to any other RMS system, either via local site connection or via server-to-server connection. The RMC supports communication interfaces through RS485, CAN, WLAN, USB, Digital/Analogue IO and Modem connections. Detailed information to the user is provided in eSite Tools interface, accessible from anywhere when Internet connection is provided as intended. New functions and software updates can be loaded remotely without the need for a site visit. In case of interrupted communication to eSite Tools, data is buffered and automatically uploaded when communication is restored to have seamless data presentations.

There is also a user-friendly local web interface, accessed via Ethernet or the built-in WLAN access point, where Site Commissioning is performed. Furthermore, the front of the RMC has six LEDs for indication of the operational status for informational purpose when on site.

5.3 Technical specifications

The following table outlines the technical specifications for the RMC unit.

General
Mounting	1 U Height, 19” Rack System
Height x Width x Depth (mm)	45 x 485 x 190 mm
Weight (kg)	1,7 kg
Data storage/capacity	400 MB
FOTA	Support For Firmware Over the Air Update

DC Supply
Operational Range	-42 to -60 V DC
Typical Current Consumption (mA)	100 mA
DC Output
12 V DC Supply CAN 1 Sensors Back Maximum Current	500 mA
12 V DC Supply CAN 2 Sensors Front Maximum Current	200 mA (C2:9)
12 V DC Supply General on Front	500 mA (C3:9, C4:9 and C7:4)
24 V DC Supply Maximum Current	200 mA (C1:1)
48 V DC Load Disconnect Control Current Maximum	500 mA For Both Outputs, Short Circuit Protected

Communication Ports
I/O	20 Digital In, Freely Configurable, 10 Digital Out, Freely Configurable, 4 Analog In, 2 Analogue Out, 2 Temperature Inputs for NTC 10 kOhm, Configurable Beta Value, 2 High Precision Voltage Measurement Inputs
External Bus	2 x CAN, RS485, Ethernet
WLAN	Wi-Fi Access Point for Service
Radio Modem	4G: LTE-FDDB1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28/B66 LTE-TDD B34/B38/B39/B40/B41 3G: WCDMA B1/B2/B4/B5/B6/ B8/B19 GSM: GSM 850/900/1800/1900MHz
Antenna Connector	SMA Female on Front
SIM	Standard (2FF) Located on Right Side
Service Port	Ethernet, USB, Wi-Fi
Load Disconnect Control	High and Low Priority Contactor PWM Controlled
Digital Inputs Thresholds	Up to 24 V DC Input, Threshold Digital In 1:>= 8 V, 0:<=5 V
Driving Capability Digital Outputs	1 A / 30 V DC
Analog Input and Output Range	Differential Inputs +/- 10 V, Differential Outputs 0 – 10 V
High Precision Voltage Measurement Input Range	Differential Inputs 0 to 65 V
LED	6 LEDs on Front for Indication of Status