1592001530 XC15-35CX EN r1.2 11.04.2017 XC15-35CX 31/40
16.4 PROPORTIONAL BAND REGULATION
This kind of regulation is available only for ON-OFF compressors (oA1=CP1 and oA2=CP2)
and if par. rtY=Pbr
The activation of compressors follows this chart:
16.4.1 COMPRESSOR ROTATION
This function is available in case of compressors of equal power and if CPo=SPo.
By using this function (par. roC=YES) is possible to equalize the compressor working hours.
16.5 VENTILATOR REGULATION
This device is able to manage the following type of ventilators:
- ON-OFF (standard by using par. oA1=Fn1 or par. oA2=Fn2)
- ON-OFF in phase-cut mode (by using the internal TRIAC, oA3=PCF)
- Electronic type (driven by a voltage command signal, 0-10Vdc type)
The regulation probe is the one set in par. FPb.
If a couple of ventilator outputs are set, it is possible to enable the rotation function (par.
roF=YES) in order to equalize the ventilator working hours.
16.5.1 ON-OFF VENTILATORS
It is possible to drive a max number of 2 ON-OFF ventilators by setting par. oA1=Fn1 and
oA2=Fn2.
When only one ventilator is set, then:
- It is activated when VAL > St2+HY2
- It is deactivated when VAL < St2
If two ON-OFF ventilators are set (oA1=Fn1 and oA2=Fn2) then:
- If VAL < St2-0.5*HY2 both ventilators are deactivated
- If St2-0.5*HY2 < VAL < St2+0.5*HY2 then only a ventilator is activated (depending
on the par. roF)
- If VAL > St2+0.5*HY2 then both ventilators are activated
16.5.2 PHASE-CUT CONTROL FOR VENTILATORS
It is possible to modulate the ventilator speed by using a phase-cut mode control. This
functionality is enabled when par. oA3=PCF. The regulation will be proportional to the
regulation band and by using the value from probe FPb. The max number of managed
ventilators depends on the maximum issued current which is 2.2A@230VAC.
The parameters involved are:
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