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© STULZ Gmbh – all rights reserved EN/02.2018/G17F
cyberlab original inSTrUcTionS
View Co08
Set the control period on 30 seconds. This means the following: If 30 seconds
after the compressor start, the hot gas pressure is less than the adjusted 0,3
bar higher than the value before the start, the compressor will be stopped and
the alarm message „Start failure alarm“ will appear.
The alarm will be automatically reset 5 times and the compressor will be restar-
ted 30 seconds after the stop. After the fifth failed attempt the alarm „Com-
pressor start failure - Check motor wiring“ is displayed and there is no other
start attempt.
In the
view C014
the operation range of the compressor (Zone 1c) can be
extended.
Set the maximum admitted speed on 120 rps.
In
view Co15
you can adjust, how the control with a low pressure ratio shall
function.
1. by closing the expansion valve.
2. by increasing the compressor speed.
Set both parameters to "Yes".
View Co04
Set the limit value for minimum suction pressure
on 3,0 bar.
Set the delay for low pressure alarm
(Min. Suction Compr Start Delay on 180s.
View Co05
Here you adjust the admitted maximum pressure difference between hot gas
and suction gas to allow the compressor start. A higher pressure difference
would overcharge the inverter with reference to the current and leads to an
alarm message.
Set 7,0 bar.
The configuration is now finished.
• De-energize the µPC.
• Pull the telephone connector of the PGD1 from block J7.
• Re-establish the 0V connection to terminal ID7.
• Put the connector of the ModBus® connection onto J8.
• Switch on again the µPC.