FW_F113POS_v1901_02_EN (addendum).docx
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Terminal 03-05; Flowmeter input
:
Three basic types of flowmeter signals can be connected to the unit: pulse, active pulse or coil. The
screen of the signal wire must be connected to the common ground terminal 03 (unless earthed at
the sensor itself). The maximum input frequency is approximately 10 kHz (depending on the type of
signal). The input signal type has to be selected with the correct SETUP-function (read par. 3.2.3.)
Coil-signal
:
The F113-P-OS is suitable for use with flowmeters which have a coil output signal. Two sensitivity
levels can be selected with the SETUP-function:
COIL LO: sensitivity from about 120mVp-p.
COIL HI: sensitivity from about 20mVp-p.
Type ZF offers for setting COIL HI : sensitivity from about 10mVp-p.
Type ZG offers for setting COIL HI : sensitivity from about 5mVp-p.
Pulse-signal NPN / NPN-LP:
The F113-P-OS is suitable for use with flowmeters which have a NPN output signal. For reliable
pulse detection, the pulse amplitude has to go below 1.2V. Signal setting NPN-LP employs a low-
pass signal noise filter, which limits the maximum input frequency - read par. 3.2.3.
Pulse-signal PNP / PNP-LP:
The F113-P-OS is suitable for use with flowmeters which have a PNP output signal. 3.2V is offered
on terminal 5 which has to be switched by the sensor to terminal 4 (SIGNAL). For a reliable pulse
detection, the pulse amplitude has to go above 1.2V. Signal setting PNP-LP employs a low-pass
signal noise filter, which limits the maximum input frequency - read par. 3.2.3.
A sensor supply voltage of 8.2, 12 or 24V DC can be provided as well (see sensor supply).
INTERNAL
EXTERNAL
Coil signal input
5
4
COIL
Common ground unit
COIL
3
GND
Input
sensitivity
selectable:
coil high / low
+
V ref.
1.2V DC
shielding
INTERNAL
EXTERNAL
NPN signal input
4
Common ground unit
SIGNAL
3
GND
shielding
NPN
+ 3.2V DC
100K
low-pass filter
selection NPN-LP
