Schneider Electric PM870 Manual De Usuario
© 2011 Schneider Electric. All Rights Reserved.
PowerLogic
TM
Series 800 Power Meter
63230-500-225A2
Chapter 5—Input/Output Capabilities
3/2011
42
•
kWh Out Pulse
This mode assigns the relay to operate as a pulse initiator with a user-defined number
of kWh per pulse. In this mode, only the kWh flowing out of the load is considered.
This mode assigns the relay to operate as a pulse initiator with a user-defined number
of kWh per pulse. In this mode, only the kWh flowing out of the load is considered.
•
kVARh Out Pulse
This mode assigns the relay to operate as a pulse initiator with a user-defined number
of kVARh per pulse. In this mode, only the kVARh flowing out of the load is considered.
This mode assigns the relay to operate as a pulse initiator with a user-defined number
of kVARh per pulse. In this mode, only the kVARh flowing out of the load is considered.
The last seven modes in the list above are for pulse initiator applications. All Series 800
Power Meters are equipped with one solid-state
Power Meters are equipped with one solid-state
KY
pulse output rated at 100 mA. The
solid-state
KY
output provides the long life—billions of operations—required for pulse
initiator applications.
The KY output is factory configured with Name = KY, Mode = Normal, and Control =
External. To set up custom values, press SETUP >
External. To set up custom values, press SETUP >
I/O
. For detailed instructions, see “I/O
(Input/Output) Setup” on page 18. Then using PowerLogic software, you must define the
following values for each mechanical relay output:
following values for each mechanical relay output:
•
Name—A 16-character label used to identify the digital output.
•
Mode—Select one of the operating modes listed above.
•
Pulse Weight—You must set the pulse weight, the multiplier of the unit being
measured, if you select any of the pulse modes (last 7 listed above).
measured, if you select any of the pulse modes (last 7 listed above).
•
Timer—You must set the timer if you select the timed mode or end of power demand
interval mode (in seconds).
interval mode (in seconds).
•
Control—You must set the relay to be controlled either remotely or internally (from the
power meter) if you select the normal, latched, or timed mode.
power meter) if you select the normal, latched, or timed mode.
For instructions on setting up digital
I/Os using software, see your software documentation
or help file.
Solid-state KY Pulse Output
This section describes the pulse output capabilities of the power meter. For instructions on
wiring the KY pulse output, see “Wiring the Solid-State KY Output” in the installation guide.
wiring the KY pulse output, see “Wiring the Solid-State KY Output” in the installation guide.
The power meter’s digital output is generated by a solid-state device that can be used as a
KY pulse output. This solid-state relay provides the extremely long life—billions of
operations—required for pulse initiator applications.
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.
initiator applications feed solid-state receivers with low burdens, this 100 mA rating is
adequate for most applications.
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 43 in this chapter.
instructions on calculating the correct value, see “Calculating the Kilowatthour-Per-Pulse
Value” on page 43 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 40 for a description of the modes.
“Relay Output Operating Modes” on page 40 for a description of the modes.
2-wire Pulse Initiator
Figure 5–3 shows a pulse train from a 2-wire pulse initiator application.
Figure 5–3: Two-wire pulse train
KY
Y
K
1
2
ΔT
3
P
LS
D
1101
22