EVCO EC6708 - Manual (Page 8)

Every Control S.r.l.
Via Mezzaterra 6, 32036 Sedico Belluno ITALY • Phone 0039-0437-852468 (a.r.) • Fax 0039-0437-83648 • [email protected] • www.everycontrol.it 8
BEFORE THE USE
Settings to execute before the use
SETTINGS TO EXECUTE BEFORE THE USE
To adjust the instrument to the power plant characteristics, it is impor-
tant to execute some settings before the use:
a) after supplied the instrument verify if the instrument is in the
status STAND-BY (during the status STAND-BY the display and
the LED are turned off, except the ON STAND-BY LED)
b) if the instrument is in the status ON keep pushed for two
seconds at least the ON STAND-BY key (passed two seconds
the instrument moves to the status STAND-BY)
c) set the working setpoint value (the working setpoint estab-
lishes the suction pressure associated to the compressors; see
the chapter Working setpoint on the page 24)
d) set the parameters tyP1 ... 8 value (the parameters tyP1 ... 8
establish the users to associate to the outputs K1 ... 8)
e) set the parameters Po 1 ... 8 value (the parameters Po 1 ... 8
establish a proportion among the compressors powers)
the parameters tyP1 ... 8 and Po 1 ... 8 belong to the Configurator
Menu; see the chapter Configurator Menu on the page 25
f) set the parameters /A6 and /A7 value (the parameters /A6 and
/A7 establish the lower and the upper end of scale for 4-20 mA
input of the suction transducer)
g) set the parameter /5P value (the parameter /5P establishes
where to display the decimal point)
h) set the parameter /bE value (the parameter /bE establishes
the kind of condensing probe that the instrument must recog-
nize)
i) if the condensing probe is a 2 wires 4-20 mA pressure trans-
ducer set the parameters /b6 and /b7 value (the parameters
/b6 and /b7 establish the lower and the upper end of scale for
4-20 mA input of the condensing transducer)
j) if the condensing probe is a PTC probe set the parameter / t
value (the parameter / t establishes the unit of measure with
which the temperature gets displayed)
k) set the parameter r 0 value (the parameter r 0 establishes the
“neutral zone” value of the suction pressure regulator)
l) if a compressor at least is choked set the parameter r C value
(the parameter r C establishes the kind of choking valve that
the instrument must manage)
m) set the parameter F 0 value (the parameter F 0 establishes the
proportional band width of the condenser fans regulator)
n) set the parameter F 1 value (the parameter F 1 establishes the
condensing quantity value to which the instrument activates
the condenser fans)
o) set the parameter F A value (the parameter F A establishes the
condenser fans functioning)
the parameters /A6, /A7, /5P, /bE, /b6, /b7, / t, r 0, r C, F 0, F 1 and
F A belong to the User Menu; see the chapter User Menu on the page
32.