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• amplitude: 24 V max
• duty cycle range: from 25% to 75%
• corresponding to a pump speed from 1100Hz
to 1350Hz (see the following diagram).
1400
1350
1300
1250
1200
1150
1100
1050
20
30
40
Duty Cycle [%]
PROGRAMMABLE ANALOG SIGNAL: this out-
put signal is a voltage (from 0 to 10 Vdc) propor-
tional to a reference quantity (frequency or power
or Temperature or Pressure) set by the user. The
default setting is the frequency (see the following
example diagram).
Output: Frequency setting
1350
1200
1050
900
750
600
450
300
150
0
0
1
2
3
4
Output: Power setting
100
90
80
70
60
50
40
30
20
10
0
0
1
2
3
4
50
60
70
5
6
7
8
9
10
Voltage (V)
5
6
7
8
9
10
Voltage (V)
100
90
80
70
60
50
40
30
20
10
0
0
1
80
1,0E-01
1,0E-02
1,0E-03
1,0E-04
1,0E-05
1,0E-06
1,0E-07
1,0E-08
1,0E-09
0
1
FAULT: this open collector output signal is ON
when a system fault condition is detected.
PROGRAMMABLE SET POINT: this open collec-
tor output signal is enabled when the reference
quantity chosen (frequency, power or time or pres-
sure or normal) is higher than the set threshold.
The signal can be "high level active" (that is the
output is normally OFF and becomes ON when ac-
tivated), or "low level active" (that is the output is
normally ON and becomes OFF when activated).
Moreover, if the reference quantity is the frequency
or the power or pressure drawn, it is possible to
set the hysteresis (in % of the threshold value) to
avoid bouncing.
For example:
− reference quantity: frequency
− threshold: 867 Hz
− hysteresis: 2%
− activation type: "high level"
65/74
TECHNICAL INFORMATION
Output: Temperature setting
2
3
4
5
6
7
Voltage (V)
Output: Pressure setting
2
3
4
5
6
7
Voltage (V)
87-901-010-01
8
9
10
8
9
10
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