SA9607P
DEVICE CONFIGURATION
SIGNAL FLOW DESCRIPTION
The following is an overview of the SA9607P's registers. For
a detailed description of each parameter please refer to
parameter description section.
Figure 6 shows the various registers in the SA9607P's power
to pulse rate block. The inputs to this block are two single bit
pulse density modulated signals, each having a pulse rate of
641454 pulses per second at rated conditions. The parameters
Kc1, Kc2, Ne, Cs, Kr, Cres, and Cled contain values which are
read from the external EEPROM during power up.
The divider registers,
Channel 1 Balance
and
Channel 2
Channel 1 Power
641454p/s
Balance,
are used for calibration and to balance the gain of
each channel. The
Earth Leakage Compensation
register is
used to compensate for any permissible earth leakage that
may cause the SA9607P to indicate a tamper condition at low
current. The
Channel Select
register selects the source (channel
1 or channel 2) which will be used for the pulse output. Register
Rated Condition
is used to program the rated condition of the
meter and feeds the registers
LED-constant
and
Counter
Resolution
with the applicable pulse rate. These two registers
are programmed to select the LED output rate and the counter
resolution (pulses per kWh) respectively.
The Counter Pulse
Width
register is used to program the pulse width for the
mechanical counter driver output MOP and MON.
Channel 2 Power
641454p/s
Channel 1
Balance
÷Kc1
Channel 2
Balance
÷Kc2
Earth Leakage
Compensation
Ne
Channel Select (1, 2, auto) Cs
Normally 1253p/s
Rated Condition
÷Kr
Normally 6400p/kWh
Counter
Resolution
Cres
LED-Constant
Cled
Counter
Pulse width
CPW
MOP
MON
LED
Figure 6: Signal flow block diagram
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SAMES [ SAMES ]
