PM9605AP 查看數據表（PDF） - South African Micro Electronic Systems

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PM9605AP

THREE PHASE POWER/ENERGY METERING MODULE FOR SPI BUS AND PULSE OUTPUT DEVICES

South African Micro Electronic Systems 

PM9604/5AP

FUNCTIONAL DESCRIPTION

1. Power Calculation

In the Application Circuit (Figure 2), the output current from the current sensor will be

between 0 and 16µARMS. The current input stage saturates at input currents greater

than18µA . The mains voltage (mains voltage + 15% -20%) is used for the power

RMS

calculation, together with the current information from the current sensor (current

transformers).

For rated conditions, the signals into the current and voltage sensor inputs are set

as follows:

Current sensor input currents: 16µARMS

Voltage sensor input currents: 14µARMS

2. Electrostatic Discharge (ESD) Protection

The device's inputs/outputs are protected against ESD. The modules resistance to

transients will be dependant upon the protection components used.

3. Power Consumption

The overall power consumption rating for this power metering application (Figure

2), is under 2.4W, excluding the current sensors.

4. Isolation

The reference for the unit is connected to neutral.

5. Isolated Input/Output Interface

The isolated interface is provided to allow the user to access the registers of the

SA9604A and the output signals of the SA9605A.

Two connector types are available on the PM9604/5AP module to access the

outputs of the two devices:

SK2 - a 25-way D-type connector (female) for the SA9604A

SK3 - a 4-pin connector for the SA9605A.

Only one of the output interfaces must be used at any one time to avoid conflict of

signal levels on the opto-couplers.

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