© 2008 Siemens Energy & Automation, Inc. All Rights Reserved.
ACCESS 9340 and 9360 Meters PMCM-9340D-0208
Chapter 5—Input/Output Capabilities 2/2008
EN–62
Relay Output Operating Modes
The relay output defaults to external control, but you can choose
whether the relay is set to external or internal control:
• Remote (external) control—the relay is controlled either from a
PC using WINPM.NET or a programmable logic controller using
commands via communications.
• Meter (internal) control—the relay is controlled by the meter in
response to a set-point controlled alarm condition, or as a pulse
initiator output. Once you’ve set up a relay for meter control, you
can no longer operate the relay remotely. However, you can
temporarily override the relay, using WinPM.Net.
NOTE: If any basic setup parameters or I/O setup parameters are
modified, all relay outputs will be de-energized.
The 11 relay operating modes are as follows:
• Normal
— Remotely Controlled: Energize the relay by issuing a
command from a remote
PC or programmable controller. The
relay remains energized until a command to de-energize is
issued from the remote
PC or programmable controller, or until
the meter loses control power. When control power is
restored, the relay is not automatically re-energized.
— Meter Controlled: When an alarm condition assigned to the
relay occurs, the relay is energized. The relay is not de-
energized until all alarm conditions assigned to the relay have
dropped out, the meter loses control power, or the alarms are
Figure 5–2: Demand synch pulse timing
PLSD110140
Normal Demand Mode External Synch Pulse Demand Timing
Billing Meter
Demand Timing
Meter Demand
Timing
Billing Meter
Demand Timing
Meter Demand
Timing (Slave to
Master)
Utility Meter
Synch Pulse
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