2. General description The XC706M controller is thought to manage compressors in a system such as a pack. The compressors can be simple, multistage or with different capacities. Control is by means of a neutral zone or proportional band and is based on the pressure or temperature sensed in the LP suction (compressors) circuits.
It scrolls the parameter codes or increases the value of the displayed variable. Holding it pressed will increase the speed. Down It scrolls the parameter codes or decreases the value of the displayed variable. Holding it pressed will increase the speed. rel. 1.0 1592011000 XC706M GB 31-08-2001 Pa. 4 / 23...
“R” led blinks). To exit: press the “SET” key till the “N” and “R” LED’s are turned off or wait for the Exit time out (30 s). rel. 1.0 1592011000 XC706M GB 31-08-2001 Pa. 5 / 23...
= output disabled for compressor with more steps the LED’s linked to the compressor (red) and the valves (green) blink together. Select the output by pressing the UP key. rel. 1.0 1592011000 XC706M GB 31-08-2001 Pa. 6 / 23...
Hold pressed the CLEAR key (alarm section) till the display shows zero. Repeat the operation for other loads TO EXIT: press the HRS key or wait for 30 sec without pressing any key. Alarm section 3.7.1 User interface &/($5 rel. 1.0 1592011000 XC706M GB 31-08-2001 Pa. 7 / 23...
“doL” message is blinking. At the end the “End” message will be displayed and after 10 seconds the instrument will restart working with the new parameters. Remove the “Hot Key”. rel. 1.0 1592011000 XC706M GB 31-08-2001 Pa. 8 / 23...
PC1 ..PC6 Power of compressor 1...6: for setting the power of single compressors. Available only if CtyP=0. The power is identified by a value (range 1÷255) proportional to the capacity of single compressor. rel. 1.0 1592011000 XC706M GB 31-08-2001 Pa. 9 / 23...
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0=valve enabled with open contact; 1= valve enabled with closed contact. 5.1.4 Security code PSc: Security code to access the configurations parameters. (0÷255). With “0” the security code is disabled rel. 1.0 1592011000 XC706M GB 31-08-2001 Pa. 10 / 23...
FdLy: “don” delay enabled also for the first call. If enabled the triggering of the step is delayed for a “don” value, respect to the call. (no = “don” not enabled; yES=”don” enabled) rel. 1.0 1592011000 XC706M GB 31-08-2001 Pa. 11 / 23...
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PEI: Pressure-switch interventions time (0÷15 min) Interval, linked to the Pen parameter, for counting interventions of the low pressure-switch.. CPP: compressor management with faulty probe (A01C) 0 = maintaining the resource entered at the moment of the failure rel. 1.0 1592011000 XC706M GB 31-08-2001 Pa. 12 / 23...
1 step for each compressors. The safety times onon, oFon and donF are not considered. In the real regulation the a load is entered or turned off only if these times are over. rel. 1.0 1592011000 XC706M GB 31-08-2001 Pa. 13 / 23...
(temperature) is lower than the regulation band all the compressors are off. Naturally also for this regulations all the delays (don and doF) safety times (onon, oFon and donF) are valid. rel. 1.0 1592011000 XC706M GB 31-08-2001 Pa. 14 / 23...
The ambient operating temperature range is between 0÷55°C. Avoid locations subject to heavy vibration, corrosive gases or excessive dirt. The same applies to the probes. Ensure ventilation around the instrument. rel. 1.0 1592011000 XC706M GB 31-08-2001 Pa. 15 / 23...
Operating temperature: 0÷55°C Storage temperature: -30÷85 °C Resolution: 1/100 Bar for suction , 1/10 Bar for condensing Accuracy: better than 1% of F.S. RTC back up battery: up to 48h rel. 1.0 1592011000 XC706M GB 31-08-2001 Pa. 16 / 23...
1 =entering the resources established by means of SPr or PoPr parameters. SPr: number of steps engaged with faulty probe. (0÷CpnU) It’s used only if CtyP=1. PoPr: capacity engaged with faulty probe (0÷255) It’s used only if CtyP=0. rel. 1.0 1592011000 XC706M GB 31-08-2001 Pa. 17 / 23...
1 - 2: ALARM RELAY: normally open, it’s close when alarm happens or the instrument is switched OFF. 3 - 4: Safety relay: normally open, it’s close when the instrument looses the control or is switched OFF rel. 1.0 1592011000 XC706M GB 31-08-2001 Pa. 19 / 23...
· QR VHFXULW\ FRGH (compressors) 2SHUDWLYHSDUDPHWHUVFRPSUHVVRUVVHFWLRQ Minutes · Hours +R8U · Day of month · Day of week QG$< 6XQ 6XQGD\ 0RQ 0RQGD\ WX( 7XHVGD\ 8HG :HGQHVGD\ WKX 7KXUVGD\ )UG )ULGD\ 6$W 6DWXUGD\ rel. 1.0 1592011000 XC706M GB 31-08-2001 Pa. 21 / 23...
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·+6( ZLWK 3E& 17& Maximum set point (compressors) /6(·3$ ZLWK 3E& &XU /6(· ZLWK 3E& 17& Reduced set point start time 6WU6 ·K Reduced set point stop time 63U6 ·K rel. 1.0 1592011000 XC706M GB 31-08-2001 Pa. 22 / 23...
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