KAPPA V ECHOS AC IOM.pdf - Industrial Air
KAPPA V ECHOS AC IOM.pdf - Industrial Air
KAPPA V ECHOS AC IOM.pdf - Industrial Air
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6.15.3 Potential free contacts<br />
The following potential free contacts are available:<br />
- 1 potential free contact for general alarm (terminals 100 - 101 - 102)<br />
- 1 potential free contact for each compressor (option)<br />
- 1 contact for each pair of fans (option)<br />
- 1 contact for each pump (option - ST models)<br />
6.15.4 Circulating pump electrical connections<br />
The external interlocks of unit must close for the unit to operate. The normally open external water circulating<br />
pump contactor terminals must be wired in series with terminals 1 and 2, on the unit control panel, to ensure that<br />
the chiller can only start after the pump is in operation.<br />
In ST units external enabling contacts 1-2 must be jumpered (unless they are required for system functions).<br />
6.15.5 Microprocessor controllers<br />
Chillers and heat pumps <strong>KAPPA</strong> V <strong>ECHOS</strong> are equipped with the pCO 2 microprocessor controller.<br />
The pCO 2 electronic microprocessor controller with the DBBB0*P20Z program is designed to manage chiller and<br />
heat pump units, with control of 2 compressors having 2 capacity steps each.<br />
The program configuretion manages the total control of the air-cooled unit with plate exchangers including<br />
compressor start/stop times, safety devices and other auxiliary functions such as condensation control in cooling<br />
mode, evaporation control in heat pump mode, free-cooling, heat recovery and other functions described later in<br />
this manual.<br />
The necessary hardware is optimised to obtain the maximum advantage from the available inputs and outputs;<br />
the connection between various circuit boards and the user interface terminal is achieved via the pLANE using the<br />
dedicated RS485 serial connector for network connections.<br />
Each unit can also be connected to remote supervision and/or telediagnostics systems by means of an RS485<br />
serial line.<br />
Detailed information on the operation of the above systems is provided in the specific controller manual supplied<br />
with the unit.<br />
6.15.6 RS485 serial interface (optional)<br />
Turn on the pump before the unit starts and stop it after the unit has<br />
stopped (recommended time delay: 60 sec.).<br />
All <strong>KAPPA</strong> V <strong>ECHOS</strong> units can be equipped with a serial interface board for supervision or<br />
remote diagnostics functions by means of a computer.<br />
The serial interface board plugs into a dedicated slot on the connection board.<br />
Connection to the supervision or remote diagnostics serial line is executed in compliance with standard RS485<br />
and is achieved by means of the serial interface boards.<br />
When the serial interface board is inserted the following communications protocols are available: Carel and<br />
Modbus. If a connection is to be made with networks that utilise the LonWorks protocol, a dedicated serial<br />
Echelon board must be installed. In this case, a conversion gateway is not required.<br />
Blue Box 35