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D-160TS-7-E
42
No.
Name
Measurement points
Standard
Remarks
①
Converter
supply voltage
Converter output terminal
block
+・・・・・・
POWER
-・・・・・・
COMMON
22.0 to 34.0V
If
①
is missing, check
receiving instrument power
supply.
Voltage measurement
※
Use a digital voltmeter or tester for measurement.
No.
Name
Measurement points
Standard
Remarks
②
Pulse
output circuit
Display test pin
+・・・・・・
TP6
-・・・・・・
TP5
0 to 3.3V
See Fig.19.4 for waveform.
②
and
③
are of opposite logic.
③
Output pulse
(Open drain)
Converter output terminal
block
+・・・・・・
PULSE
-・・・・・・
COMMON
Depends on the
specification
of receiving
instrument
See Fig.19.5 for waveform.
If
②
appears but
③
is
missing, converter or receiving
instrument is at fault.
Pulse waveform observation
※
Use an oscilloscope for measurement.
Fig. 19.5 Waveform of output pulse
Fig. 19.4 Waveform of pulse output circuit
3600× Mf
Q
T
=
T
:
Period (ms)
Q
:
Flowrate (m
3
/h)
Mf
:
Meter Factor (L/P)
T
W
3.3V
0V
T
VH
2V MAX.
W
W
:
Pulse width (ms)
0.2ms or 1.0ms (set via parameter)
VH
:
Depends on the specification of receiving
instrument
T
W
3.3V
0V
T
VH
2V MAX.
W