Installation & Operation Manual
7 – PULSE OUTPUT
One transistor or mechanical pulse output is available as scaled pulse output according to the Accumulated Total.
PERIOD TIME PULSE OUTPUT
71
The period time determines the time that the transistor or relay will be switched—the pulse
length. The minimum time between the pulses is as long as the selected period time.
One period is approximately 7.8 msec. If the value selected is “zero”, the pulse output is
disabled. The maximum value is 255 periods.
OTE:N If the frequency goes out of range—when the flow rate increases, for example—an
internal buffer stores the missed pulses. As soon as the flow rate reduces again, the
buffer empties.
Pulses may be missed due to a buffer overflow. Make sure to program this setting within its
range.
For the ER-420-DC and ER-420-AC, reduce the maximum output frequency to 0.5 Hz to
prolong the life of the product.
Number of Periods Period Time Max. Frequency
0 Disabled Disabled
1 0.0078 secs 64 Hz.
2 0.0156 secs 32 Hz.
3 0.0234 secs 21 Hz.
64 0.5000 secs 1 Hz.
255 1.9922 secs 0.25 Hz.
PULSE PER 72 According to the measurement unit settings for Total, a pulse will be generated every
X-quantity. Enter this quantity here while taking the displayed decimal position and
measuring unit into account.
THE MULTIPLICATION FACTOR SETUP 15 APPLIES ALSO ON THE DISPLAYED VALUE
“PULSE PER”. IF THE FACTOR IS 100X AND THE DISPLAYED VALUE IS 10 GAL, IT MUST BE
READ AS ONE PULSE PER 1000 GAL.
8 – COMMUNICATION (DOES NOT APPLY TO THIS UNIT)
Page 19 March 2013
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