PM9604/5AP
FUNCTIONAL DESCRIPTION
1. Power Calculation
IntheApplicationCircuit(Figure2),theoutputcurrentfromthecurrentsensorwillbe
between 0 and 16µARMS. The current input stage saturates at input currents greater
than18µARMS. The mains voltage (mains voltage + 15% -20%) is used for the power
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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SAMES [ SAMES ]
