Alco Controls - Grobelny
Alco Controls - Grobelny
Alco Controls - Grobelny
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Electronic Controllers with Network Communication<br />
8<br />
Display Case and Temperature Controllers are for<br />
temperature and defrost control in display cases with<br />
conventional Thermo-Expansion valves.<br />
Controllers with Network Communication<br />
The <strong>Alco</strong> EC Series of drivers and controllers utilise<br />
the very latest in communication technology which<br />
is setting new standards in the refrigeration industry.<br />
Energy saving algorithms are incorporated into many<br />
of the controllers including: Adaptive superheat<br />
and thermostat modulation, defrost on demand &<br />
suction and discharge setpoint shift.<br />
All EC2 or EC3 controllers are available in two<br />
communication protocols TCP/IP Ethernet and<br />
LON.<br />
TCP/IP Ethernet:<br />
The controllers are Ethernet based enabling them<br />
to be connected directly to any computer via the<br />
Ethernet port (RJ45 connector). The controllers act as<br />
web server enabling the engineer to pick-up standard<br />
configuration pages directly from the controllers<br />
without the need of any additional hardware or<br />
software. Each controller can be connected to the PC<br />
using a crossover cable however, the most convenient<br />
way to connect a controller to the PC is to use a router<br />
that will automatically assign a TCP/IP address. Either<br />
way, the engineer can access the monitoring and<br />
parameter configuration pages by entering the TCP/<br />
IP number into the address line of an Internet browser<br />
such as Mozilla or Microsoft Internet Explorer. User<br />
name and password protection is provided to protect<br />
the controller from unauthorized access.<br />
The TCP/IP based Controllers offer a practical<br />
solution particularly for smaller installations that<br />
require communication for monitoring purposes<br />
without the need for customized visualization. For<br />
many installations, an additional monitoring server<br />
is not required.<br />
Other functions:<br />
- Monitoring of system temperatures and pressures<br />
as well as relay status information.<br />
- Read/write of EC2 & EC3 control parameters<br />
- Real time graphical visualization<br />
- Log function of up to one months data directly<br />
on the controller<br />
- Log function of data to a PC *<br />
- Storage and retrieval of system parameter *<br />
- Local alarms via email *<br />
- Remote alarms via email **<br />
* Controller must be connected to the PC<br />
** Router must be connected to an external<br />
telephone line and / or the Internet via an<br />
Internet Service Provider (ISP).<br />
LON Protocol:<br />
An identical range of free-topology LON FTT 0 based<br />
controllers is available and compliments the TCP/IP<br />
controller series. LON is an open system protocol<br />
created by Echelon and therefore benefits from not<br />
being tied to a restrictive third party protocol.<br />
LON based controllers can be connected to each<br />
other to form simple networks for applications<br />
requiring master / slave or synchronized defrosting.<br />
However, they can also be connected to an AMS<br />
Monitoring Server to fulfill the most sophisticated<br />
system requirements.<br />
The AMS acts as an interface from the LON network<br />
containing EC2 and EC3 to the outside world. Remote<br />
access can be made using standard telephone line;<br />
analog or digital ISDN. Alternatively, data can be<br />
transmitted via the Internet or a dedicated company<br />
Intranet using TCP/IP. Either way, visualization may<br />
be made using an industry standard Internet web<br />
browser.<br />
By transmitting the system status information as<br />
temperatures or pressures, used to control the<br />
refrigeration circuit in each subsystem, together with<br />
other vital system data, the system administrator<br />
can potentially identify system failures before they<br />
become an expensive stock loss situation. Should a<br />
system failure occur, the controllers automatically<br />
transfer to an emergency-operating mode whilst<br />
sending a system error message to the monitoring<br />
server.<br />
The benefit of a centralized data acquisition system<br />
is that it can dramatically reduce the costs associated<br />
with food, which cannot be sold as a result of<br />
failing to meet the criteria set by the food hygiene<br />
regulations.<br />
The monitoring server is typically connected to a<br />
analog or digital phone line and can communicate<br />
a system alarm to a remote location via fax, email or<br />
SMS. In a similar way to the TCP/IP controllers, the<br />
engineer can visualize the system without the need<br />
of any additional hardware or software. The system<br />
can be visualized by entering the TCP/IP address of<br />
the AMS Monitoring server into the address line of<br />
the Internet web browser. In fact, the advancement<br />
of telecommunication systems are such that a<br />
maintenance engineer equipped with a laptop<br />
computer and mobile telephone can interact with<br />
the system from any location.<br />
A2.5. /0604/E