ZFC
page 22
ZFC K03/0522
A
ANALOG OUTPUT
A6 tune-max
The 20mA value can be tuned precisely with this setting. The initial maximum
analog output value is 20mA. However, this value might differ slightly due to
ambient influences such as temperature for example.
Before tuning the signal, make sure that the analog signal is idle (not used)
for any application!
After pressing PROG, the current will be about 20mA. The current can be
increased / decreased with the arrow keys and is directly active. Press ENTER to
store the new value.
If required, you can program the analog output 'up-side-down'. The
4mA or
represents the maximum flow rate and the 20mA represents the minimum flow
rate.
A7 filter
This setting is used to stabilize the output signal. With the help of this
digital filter a more stable but less actual representation of the flow rate
can be obtained.
The filter principal is based on three input values: the filter level (01-99),
the last calculated flow rate and the last average value. The higher the
filter level, the longer the response time on a value change will be.
filter value
R
ESPONSE TIME ON STEP CHANGE OF ANALOG VALUE
. T
IME IN SECONDS
influence
50%
75%
90%
99%
01 filter
disabled
filter disabled
filter disabled filter
disabled
02 0.1
sec
0.2 sec
0.4 sec 0.7
sec
03 0.2
sec
0.4 sec
0.6 sec 1.2
sec
05 0.4
sec
0.7 sec
1.1 sec 2.1
sec
10 0.7
sec
1.4 sec
2.2 sec 4.4
sec
20 1.4
sec
2.8 sec
4.5 sec 9.0
sec
30 2.1
sec
4.0 sec
7.0 sec 14
sec
50 3.5
sec
7.0 sec
11 sec 23
sec
75 5.2
sec
10 sec
17 sec 34
sec
99 6.9
sec
14 sec
23 sec 45
sec
7.1.12
EXPLANATION OF SETUP-MENU B - PULSE
B
PULSE
B1 mode
signed
not negative
The unit has three scaled pulse output modes. This functionality drives two pulse
outputs which, depending on the mode, can be used as follows:
On pulse output R1 a pulse will be send when the total has increased or
decreased with the set quantity (SETUP B4). Pulse output R2 will send a 0 for
increase or 1 for decrease.
On pulse output R1 a pulse will be sent when the total has increased with the set
quantity (SETUP B4). On pulse output R2 the sign of the flow rate will be send
(positive=0, negative=1).
separated On pulse output R1 a pulse will be sent when the total has increased with the set
quantity (SETUP B4). On pulse output R2 a pulse will be sent when the total has
decreased with the set quantity (SETUP B4).
