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EASTRON SDM320Y User Manual
06-2018 V1.0
2018 EASTRON Electronic. All Rights Reserved. www.eastron.com.cn
3.2 Prepaid Function Description
This function needs to be used in conjunction with the company's prepaid management system
software (see the detailed software operation instructions of the prepaid management system software).
Description of alarm threshold and emergency amount:
The meter has a two-level balance alarm threshold, called the first-level alarm threshold and second-
level alarm threshold. In which the first-level alarm threshold value is higher than the second-level alarm
threshold value. That is, the first-level alarm value is triggered first when the balance is insufficient.
The meter has the function of emergency amount. When the emergency amount is set to a value higher
than 0, the emergency function is activated, means, the user is allowed to overdraw a certain amount of
expenses. If the user has used the emergency amount, and when the user buy electricity, the used
emergency amount will be deducted first, and the remaining electricity charge will be charged to the meter.
Turn off this function when the emergency amount is set to 0.
3.2.1 Electricity Purchase
：
The user goes to the administrative department of selling electricity to deal with the electricity
purchase business.
3.2.2 Electricity Use
：
When the remaining amount of the meter is less than the first alarm value, the buzzer is on and the
alarm indicator starts flashing. If the user presses any button, the buzzer is turned off, but the alarm indicator
remains flashing. If the user does not press any button, the buzzer alarm will automatically shut down after
10 minutes. The function reminds users that the amount is insufficient and needs to be topped up.
If the value is not charged at this time, when the remaining amount of the meter is less than the
second-level alarm value, the relay will open and the buzzer will be turned on at the same time. In the mean
while, the alarm indicator light becomes normally on; If the user presses any button, the relay is switched
on and the buzzer is turned off. The alarm indicator remains on. If the user does not press any key, the
buzzer alarm will automatically shut down after 10 minutes, but the relay clock will remain open until the
user presses any key. This function alerts the user that need to recharge immediately.
3.2.3 Meet an Emergency
：
When the remaining amount of the meter goes to 0, the relay will be automatically disconnected and
cut off. If the emergency amount function is not turned on, the relay is always disconnected. If the
emergency amount function is turned on, the meter will be automatically connected to the relay after the
user presses any key, and the relay will be automatically disconnected after the user has consumed the
emergency amount.
3.3 Measurement Parameters
It can be viewed by pressing the button
：
Balance
→
Accumulated Used Amount
→
Accumulated Used Electricity
→
Total Active Power
→
recharge amount
→
Communication Address
→
Communication Baud Rate
→
Communication Parity
Bit
→
Pulse Constant
→
Software Version
Page
Display
Description
