Digital Inputs (PAS600L, PAS600LWD, PAS800L)

Presentation

The two embedded digital inputs on Panel Server Universal PAS600L and Advanced PAS800L are used to monitor the state of an external contact or as a pulse counter.

When configured as a pulse counter, the falling edge of the pulse is counted. Modbus registers are refreshed every 60 seconds.

Availability

This function is available on Panel Server Universal PAS600L, PAS600LWD, and Advanced PAS800L.

Digital Input Types

There are two types of digital input:

Standard digital inputs, used to record the state of a normally open or normally closed external contact.
Pulse digital inputs, used to count pulses delivered by a WAGES (Water, Air, Gas, Electricity, Steam) metering device compliant with standard IEC 62052-11 (minimum pulse width of 30 ms). Pulse digital inputs support up to 16 pulses/second, as per the requirements of the standard.

Each digital input can be individually configured as either standard or pulse.

Pulse Digital Input Parameters

The pulse weight and pulse unit of each pulse input can be configured using EcoStruxure Power Commission software or Panel Server webpages. A pulse counter is activated when the corresponding digital input is configured as a pulse input.

The pulse weight must be calculated according to the characteristics of the pulses delivered by the meter, and the meter element unit. For the Panel Server, the pulse weight is the pulse value expressed in the meter element unit. The following table shows some examples:

Examples:

WAGES pulse value	Meter element unit	Pulse value in meter element unit	Pulse weight in webpages
125 liters	m³	1 pulse = 0.125 m³	0.125
1 liter	m³	1 pulse = 0.001 m³	0.001
10 Wh	Wh	1 pulse = 10 Wh	10
1 kWh	Wh	1 pulse = 1000 Wh	1000

Setting the Parameters

The digital inputs are set as follows:

With EcoStruxure Power Commission software
On the Panel Server webpages, at Settings > Embedded Input Management

Digital Input Settings

The following table describes the settings of the digital inputs:

Embedded input 1 (DI01)
Embedded input 2 (DI02)

Parameter	Description
Connected device	Used to select the type of each digital input (Embedded input 1 (DI01)/Embedded input 2 (DI02)): Not connected Pulse counter Standard I/O

Parameter

Description

Connected device

Used to select the type of each digital input (Embedded input 1 (DI01)/Embedded input 2 (DI02)):

Not connected
Pulse counter
Standard I/O

Standard Input Settings

The following table describes the settings of Embedded input 1 (DI01) or Embedded input 2 (DI02) when the digital input is set to Standard I/O:

Type of parameter	Parameter	Description
Identification	Name	Enter the input name.
Identification	Label	Enter the input label.
Configuration	Type	Displays the type of connected device NOTE: Setting not editable.
Status settings	I/O Contextualization	Select the contextualization from the list
	Status name	If you select Custom as contextualization option, then enter the custom name for the device.
	Meaning of input = 0	Displays a value depending on the I/O contextualization selected. Enter your custom values if you select Custom as contextualization option.
	Meaning of input = 1	Displays a value depending on the I/O contextualization selected. Enter your custom values if you select Custom as contextualization option.
Contextualization data	Commodity	Select the commodity type in the list, as contextualization data.
Contextualization data	Usage	Select the usage in the list, as contextualization data.

Pulse Counter Settings

The following table describes the settings of Embedded input 1 (DI01) or Embedded input 2 (DI02) when the digital input is set to Pulse counter:

Type of parameter	Parameter	Description
Identification	Name	Enter the input name of the device.
Identification	Label	Enter the input label as per the name plate in the network.
Configuration	Type	Displays the type of digital input NOTE: Setting not editable.
Pulse settings	Meter element	Select either a pre-defined meter element or Custom in the list. NOTE: If a meter element is selected, the meter unit, flow element, and flow unit are displayed.
	Meter element name	Enter the name of the custom meter element. NOTE: Displayed when Custom is selected.
	Meter unit	Displays the consumption unit of the meter element. NOTE: Editable when Custom is selected.
	Flow element	Displays the name of the flow the meter element is intended for. NOTE: Editable when Custom is selected.
	Flow unit	Displays the unit of the meter element flow . NOTE: Editable when Custom is selected. Flow results for a custom element is calculated as flow per hour.
	Pulse weight	Enter the pulse weight (pulse value expressed in meter element unit). NOTE: Depending on the language of your browser, to add a decimal value, for example 1.125, you may need to copy and paste the value into the field.
	Preset meter consumption value	Allows you to set a value for consumption prior to starting metering through the current Panel Server, for example, when the metering device is replaced.
Contextualization data	Commodity	Select the commodity type in the list, as contextualization data.
Contextualization data	Usage	Select the usage in the list, as contextualization data.

Consumption and Flow Calculation for Pulse Counter

When a digital input is configured as a pulse counter, the following information is available through Modbus registers and is displayed in the Monitoring & Control webpage:

Consumption: total consumption since monitoring began
Flow: instantaneous value calculated between the last two pulses

The data is calculated and stored in Modbus registers every 60 seconds.

NOTE: The Panel Server counts the pulse on the falling edge.

Consumption is calculated as (number of pulses x pulse weight) + preset meter consumption value (if any).

Example with pulse weight = 0.125: (20 pulses x 0.125 m³) + 0 = 2.5 m³.

Flow is calculated as the consumption between the last two pulses/ time between last two pulses (t) in seconds. As the consumption between the last two pulses is always equal to the pulse weight, this can be simplified as Pulse weight/ t

Example: with pulse weight = 0.125 and one pulse every 3 minutes 0.125/180 = 0.00069 m³/s

The average power data (or average flow) between two pulses is reset to 0 after a duration d = (3 x t), where t is the time in seconds between the last two pulses received. If (3 x t) is less than 5 seconds, the duration d is five seconds.

Meter values are saved each time the value changes. Cumulative pulse count values are stored to memory after each change. The meter parameter setting dates are saved instantly to memory.