Fluidwell E115-P, User Manual

Page: 26 / 72

User Manual E115-P
Page 26 FW_E115-P_M_v0301-01_EN
6 FLOWMETER
6.1 SIGNAL A Selects the type of flowmeter pickup / signal. The unit can process several
types of input signal. The settings with LP are used to apply a built-in low-
pass filter. Also see
Section 6.4.10: Terminals S1-S3 Signal A and S4-S6
Signal B: Flowmeter input [»46]
for more information.
The selections “Active pulse input” offer a pulse detection level of about
50% of the selected active pulse voltage.
FLOWMETER SELECTION CHARACTERISTICS
TYPE OF SIGNAL EXPLANATION RESISTANCE FREQ / mVpp REMARKS
NPN NPN input 100 kΩ pull-up max. 6 kHz. (open collector)
NPN - LP
NPN input
with low pass filter
100 kΩ pull-up max. 2.2 kHz.
(open collector)
less sensitive
REED Reed-switch input 1 MΩ pull-up max. 1.2k Hz
REED - LP
Reed-switch input
with low pass filter
1 MΩ pull-up max. 120 Hz Less sensitive
PNP PNP input 51 kΩ pull-down max. 6 kHz
PNP - LP
PNP input
with low pass filter
51 kΩ pull-down max. 700 Hz Less sensitive
NAMUR NAMUR input 820 Ω pull-down max. 4 kHz
External sensor
power required
COIL HI
Coil input
high sensitivity
-
min. 20 mVpp
Sensitive for
interference!
Type ZF min. 10 mVpp
Type ZG min. 5 mVpp
COIL LO
Coil input
low sensitivity
- min. 90 mVpp Normal sensitivity
8-1 DC
Active pulse input
detection level
3.9 Vdc
3k9 Ω pull-down max. 10 kHz
External power
required
24 DC
Active pulse input
detection level 11 Vdc
3 k Ω pull-down max. 10 kHz
External power
required
6.2 SIGNAL B The secondary signal B is used to detect the direction of flow. In most
applications, the type of signal for input B will be the same type as the main
signal A. For signal selection, refer to
6.1: FLOWMETER > SIGNAL A
.
6.3 BI-DIRECTIONAL The secondary pulse input B of the E115-P can be set to:
●
disable : input B will be ignored, the unit will act as a normal flowrate /
totalizer.
●
90° : the phase difference between flow A and flow B is 90° and is used
to detect the flow-direction in the flowmeter.
●
270° : the phase difference between flow A and flow B is 270° and is
used to detect the flow-direction in the flowmeter.