Idex LIQUID CONTROLS HML210, Руководство по установке и эксплуатации

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29
Programming Functions
6-OUTPUTS (continued)
Duty cycle1=% is the duty cycle for Out1 . This defines
the ratio between the ON and OFF states. When Out1
is set to one of the three “ #1 FREQ ” options, a value of
50% indicates the ON phase will be the same as the
OFF phase; 60% indicates the phase ON will be 60%
and phase OFF will be 40% of the total cycle time.
When Out1 is set to one of the three “ #1 IMP ” options,
the duty cycle indicates the OFF phase because the ON
phase it’s already set with the function Tpul1 set in the
2-SCALES menu. Set the duty cycle by calculating the
minimum time of the OFF phase and the time of total
cycle using the following formulas:
T.total cycle = 100 x (pulse duration in ms)÷(duty cycle)
T.OFF phase = T. total cycle - pulse duration.
NOTE: If Duty cycle1=% is set to “ 0 ”, the pulses are
synchronized with the flow rate, therefore, when
frequency is selected, do not set to “
0 ”. This is the
recommended setting for short run applications such as
dosing.
Duty cycle2=% is the duty cycle for Out2 . It is defined
and set the same as Duty cycle1=% .
Out mA1= is the setting for the current output range for
Fs1 . The current output setting for Fs1 is optional. There
are three fields to modify for this function:
•
Scale zero: 0 or 4 mA
• Full scale: 20 or 22 mA
• Field: + = positive, - = negative, ± = both, or
-0+ =central zero scale
The values corresponding to the scale points are shown
in the chart to the right.
In hardware alarm conditions ( HARDW AL. ) the current
value is programmed by the function mA v.fault in the 4-
ALARMS menu and it is expressed as percentage of a
fixed current range, where: 0% = 0mA and 110% = 22mA.
Out mA2= is set up the same way as Out mA1= . It is
only available with optional modules ME202 or ME204.
Current values in mA associate to the
% value of full scale
Reverse Flow Zero Direct Flow
Value Value
Possible Field <-100% -100% 0% +100% >+100%
OutmA1= 0-20+ 0 0 0 20 20
OutmA1= 0-22+ 0 0 0 20 22
OutmA1= 4-20+ 4 4 4 20 20
OutmA1= 4-22+ 4 4 4 20 22
OutmA1= 0-20- 20 20 0 0 0
OutmA1= 0-22- 22 20 0 0 0
OutmA1= 4-20- 20 20 4 4 4
OutmA1= 4-22- 22 20 4 4 4
OutmA1= 0-20± 20 20 0 20 20
OutmA1= 0-22± 22 20 0 20 22
OutmA1= 4-20± 20 20 4 20 20
OutmA1= 4-22± 22 20 4 20 22
OutmA1= 0-20-0+ 0 0 10 20 20
OutmA1= 0-22-0+ 0 1 11 21 22
OutmA1= 4-20-0+ 4 4 12 20 20
OutmA1= 4-22-0+ 4 4.8 12.8 20.8 22
Graph of 4-20-0+ Graph of 4-22+