User Manual
E115-P
Page 48
FW_E115-P_M_v0301-01_EN
● For better noise immunity and if no high sensor input frequencies are expected, select signal
setting PNP-LP (low-pass signal noise filter) which limits the maximum input frequency to avoid
pulse bounce (see Menu_Flowmeter_Signal_me1).
Power supply type PD provides a sensor supply voltage of 8.2, 12, or 24 VDC.
S1
S2
S3
P3
↓
+
J1-J2
8.2 ; 12V; 24V
V
Common system ground
PNP-LP*
R
3V
↓
+
┴
MEM
Fig. 32:
Terminals S1-S3 and P3: Pulse signal input PNP
Reed switch
The unit can be used with flowmeters which have a reed switch. To avoid pulse bounce from the
reed switch, it is advised to select REED LP – low-pass noise filter, which limits the maximum input
frequency (see Menu_Flowmeter_Signal_me1). Make sure the contact resistance of the reed switch
is less than 1V@2uA=500 kOhm.
S2
Common system ground
S3
REED-LP*
┴
R
3V
S1
MEM
Fig. 33:
Terminals S1-S2: Reed switch input
