Schneider Electric PM870, PM820 Solid-state KY Pulse Output, Wire Pulse Initiator, KWh Out Pulse

PowerLogicTM Series 800 Power Meter	63230-500-225A2
Chapter 5—Input/Output Capabilities	3/2011
•	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.
•	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.

The last seven modes in the list above are for pulse initiator applications. All Series 800 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 > 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:

•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).

•Timer—You must set the timer if you select the timed mode or end of power demand 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.

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.

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.

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.

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.

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.

2-wire Pulse Initiator

Figure 5–3shows a pulse train from a 2-wire pulse initiator application.

Figure 5–3: Two-wire pulse train

Y

K

PLSD110122

123

KY

ΔT

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