© 2008 Siemens Energy & Automation, Inc. All Rights Reserved.
ACCESS 9340 and 9360 Meters PMCM-9340D-0208
Chapter 5—Input/Output Capabilities 2/2008
EN–66
Solid-state KY Pulse Output
This section describes the pulse output capabilities of the meter. For
instructions on wiring the KY pulse output, see “Wiring the Solid-State
KY Output” in Chapter 5—Wiring of the installation manual.
The meter units are equipped with one onboard, solid-state KY pulse
output. This solid-state relay provides the extremely long life—billions
of operations—required for pulse initiator applications.
The KY output is a Form-A contact with a maximum rating of 100 mA.
Because most pulse initiator applications feed solid-state receivers
with low burdens, this 100 mA rating is adequate for most
applications.
To set the kilowatthour-per-pulse value, use ION Setup or the display.
When setting the kWh/pulse value, set the value based on a 2-wire
pulse output. For instructions on calculating the correct value, see
“Calculating the Kilowatthour-Per-Pulse Value” on page 67 in this
chapter.
The KY pulse output can be configured to operate in one of 11
operating modes. See “Relay Output Operating Modes” on page 62
for a description of the modes.
2-wire Pulse Initiator
Figure 5–3 shows a pulse train from a 2-wire pulse initiator
application.
In Figure 5–3, the transitions are marked as 1 and 2. Each transition
represents the time when the relay contact closes. Each time the
relay transitions, the receiver counts a pulse. The meter can deliver
up to 12 pulses per second in a 2-wire application.
Figure 5–3: Two-wire pulse train
KY
Y
K
12
ΔT
3
PLSD110122
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