Liquid Controls HML110 IOM User Manual
Page 25
HML 110
25
110_EN_LC_5_3_6X.doc
The NAMUR NE43 recommendations requires alarms signaling value for a current output lower than
3.6 mA (<18%) or greater than 21 mA (>105%). It is preferable to set the value of this function at
10%, so that the current value in cases of a.m. would be 2 mA, allowing the following diagnostics:
current < 2 mA - 5%: line interrupted, power supply failure or faulty converter;
2 mA -5%
≤ current ≤ 2 mA + 5%: hardware alarm;
4 mA
≤ current ≤ 20 mA: normal working range;
20 mA < current
≤ 22 mA: out of range, measure above 100% full scale (f.s.).
(POS. 4.6) Frequency output value in case of failure
[Hz v.fault=% XXX]
To set the frequency value assigned to the on/off output in one or more of the following cases:
Empty pipe; Coils interrupted ; ADC error
Allowable range from 0 to 125% of the frequency full scale value.
Although there are no specific rules regulating cases such as these, it would be convenient to use the
failure information as follows:
0% Hz
≤ frequency ≤ 100% f.s.: normal working range;
100% f.s. < frequency
≤ 110% f.s.: overflow, measure above the 100% of the f.s.;
115% f.s.
≤ frequency ≤ 125% f.s.: hardware alarm condition.
MENU 5. INPUT
( POS. 5.1-5.2-5.3-5.4) Enable reset partial/total totalizers [T+-/P+- reset= ON/OFF]
When this function is active, the totalizers may be reset applying a voltage on the on/off input or
from keyboard.
(POS.5.7) Autozero” calibration external command enable
[Calibration=ON/OFF]
This function enables/disables the automatic zero calibration system. When this function is active,
applying a voltage on the meter’s on/off input terminals performs an autozero calibration cycle.
ATTENTION: if the voltage pulse is less 1 sec., the meter performs an Auto calibration cycle to
compensate for possible thermal drifts. If the voltage pulse is more 1 sec, the meter performs a
Autozero calibration of measure.
MENU 6 - OUTPUTS
(POS. 6.1) Choice of the function corresponding to on/off output 1
[Out1=XXXXXX]
Function choice corresponding to digital Output 1. The functions are listed in the table below.
(POS. 6.2) Choice of the function corresponding to on/off output 2
[Out2=XXXXXX]
Function choice corresponding to digital Output 2. The functions are listed in the table below.
FUNCTION FOR OUTPUT 1, 2.
OFF: DISABLED
#1PULS+: PULSE ON CHANNEL 1 FOR POSITIVE FLOW RATE
#1PULS-: PULSE ON CHANNEL 1 FOR NEGATIVE FLOW RATE
#1PULS±: PULSE ON CHANNEL 1 FOR POSITIVE AND NEGATIVE FLOW RATE
#2PULS+: PULSE ON CHANNEL 2 FOR POSITIVE FLOW RATE
#2PULS-: PULSE ON CHANNEL 2 FOR NEGATIVE FLOW RATE
#2PULS±: PULSE ON CHANNEL 2 FOR POSITIVE AND NEGATIVE FLOW RATE
#1FREQ+: FREQUENCY CHANNEL 1 FOR POSITIVE FLOW RATE
#1FREQ-: FREQUENCY CHANNEL 1 FOR NEGATIVE FLOW RATE
#1FREQ±: FREQUENCY CHANNEL 1 FOR POSITIVE AND NEGATIVE FLOW RATE
#2FREQ+: FREQUENCY CHANNEL 2 FOR POSITIVE FLOW RATE
#2FREQ-: FREQUENCY CHANNEL 2 FOR NEGATIVE FLOW RATE
#2FREQ±: FREQUENCY CHANNEL 2 FOR POSITIVE AND NEGATIVE FLOW RATE
SIGN: FLOW DIRECTION OUTPUT (ENERGISED = -)
RANGE: RANGE INDICATION OUTPUT (ENERGISED = SCALE 2)
MAX AL: MAX FLOW RATE OUTPUT(ENERGISED = AL. OFF)
MIN AL: MIN FLOW RATE OUTPUT(ENERGISED = AL. OFF)
MAX+MIN: MAX AND MIN FLOW RATE ALARM OUTPUT (ENERGISED = AL. OFF)
EMPTY PIPE: EMPTY PIPE ALARM OUTPUT (ENERGISED = FULL PIPE)
OVERFLOW.: OUT OF RANGE ALARM OUTPUT (ENERGISED = FLOW RATE OK)
HW ALARM: CUMULATIVE ALARM OUT interrupt coils, empty pipe, measure error (ENERGISED=NO ALARMS)