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40 AS302P Single Phase Smart Meter

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24.2. Auxiliary Load Control Switch Calendar

The meter contains an ALCS / HCALCS Switching Calendar that defines the state, open or closed, for up to five ALCS /

HCALCS.

The calendar specifies which Day Profile is to be used. Up to 20 Special Days can be specified, if one of these is not

specified then the Day Profile is taken from the Week Profile information. The Switching Table (stored in UTC) contains

60 switching rules across all Day Profiles.

Under certain circumstances no action will be taken:

- If the switch has already received a command with a fixed time, then this takes precedence

- If the Main Contactor is open or armed, then the Auxiliary Switch will not close

24.2.1. Randomisation Offset

A Random Time Offset is applied to the switching times of the ALCS or HCALCS. This is defined as the Randomisation

Offset. The Randomisation Offset is the product of the following numbers (rounded to the nearest second):

• Randomisation Offset Number, this is a number between 0 & 1 generated automatically during the manufacturing

process.

• Randomisation Offset Limit, this is a configurable value between 0 and 1799

24.3. Auxiliary Load Control Commands

The following Commands are available to control the state of the ALCS / HCALCS. All Commands can be set to control

any of the available switches.

User Commands

• A User Interface Command, to test the ALCS / HCALCS, this will change its state of the ALCS / HCALCS for 5

mins and then it reverts back to the Switching Calendar

DCC Commands

• A command from DCC that defines:

- To Open for a specified period

- To Close for a specified period

- Reset (this reverts to the switching table)

• When executing the command the meter records the command and the outcome in the ALCS Event log.

HCALCS Command

• A command asking the meter to send information relating the current state of the HCALCS

• A command to control the state of the HCALCS, in accordance with the rules of the ALCS Switching Calendar,

this will contain the remaining time until the next Switching Event (taking into account the Randomised Offset).

Honeywell AS302P User Manual

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