Schneider Electric HRB1684301-01 user manual Input metering

Chapter 8—Input / OutputPowerLogic™ PM5500 series user manual

Digital input setup parameters available through the front panel

Parameter	Values	Description
Label	—	This can be modified only through software. Use this
		field to assign names to the digital inputs (S1 to S4).
		Debounce is the time delay that compensates for
Debounce Time		mechanical contact bounce. Use this field to set how
	0 to 1000	long (in milliseconds) the external signal must remain in
(ms)		a certain state to be considered a valid state change.
		Allowable values are increments of 10 (i.e., 10, 20, 30,
		etc., up to 1000 ms).
		This field displays how the digital input functions.
		• Normal: the digital input is either associated with a
		digital input alarm, or it is not associated with
		another meter function. The meter counts and
		records the number of incoming pulses normally.
		• Demand Sync: the digital input is associated with
		one of the input sync demand functions. The meter
Control Mode	Normal, Demand Sync, Input	uses the incoming pulse to synchronize its demand
	Metering, Multi-Tariff	period with the external source.
		• Input Metering: the digital input is associated with
		one of the input metering channels. The meter
		counts and records the number of incoming pulses
		and related consumption data associated with the
		pulses.
		• Multi-Tariff: the digital input is associated with the
		multi-tariff function. See “Input mode overview” on
		page 105.

7.Move the cursor to point to the next parameter you want to modify, press Edit, make your changes, then press OK.

8.Press to exit. Press Yes to save your changes.

Related topics

•See “Synchronized demand” on page 112 for information on using an external source to synchronize meter demand periods.

•See “Input metering setup” on page 73 for details on associating a digital input for input metering applications.

Input metering

Your meter’s digital inputs can be used to count pulses from transducers and convert the pulses to energy measurements.

Your meter’s input metering channels count pulses received from the digital inputs assigned to that channel. The incoming pulses are used in calculating and measuring consumption data (e.g., BTU, kWh, L, kg). Each channel must have the following values configured to match the pulse data:

•Pulse Weight: the pulses per unit value.

•Unit Code: the unit of measure associated with the monitored value.

•Demand Code: for time-based values (such as kWh), this provides the associated demand units (kW) for demand calculations; for other values (such as kg), this can be configured to provide rate information (kg/h or kg/s).

•Mode: Whether pulse counting based on full pulses or transitions.

For example, if each complete pulse represents 125 Wh, you can configure for Wh pulsing as follows:

•Pulse Weight = pulses/Wh = 1/125 = 0.008

•Unit Code = Wh

•Demand Code = kW (this is automatically set)

•Mode = pulse

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