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SA2007PPA 数据表(PDF) 6 Page - Sames |
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SA2007PPA 数据表(HTML) 6 Page - Sames |
6 / 12 page sames sames SA2007P 6/12 http://www.sames.co.za Figure 6: Signal flow block diagram DEVICE CONFIGURATION SIGNAL FLOW DESCRIPTION The following is an overview of the SA2007P's registers. For a detailed description of each parameter please refer to parameter description section. Figure 6 shows the various registers in the SA2007P'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 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 SA2007P 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 1 Balance ÷Kc1 Channel 2 Balance ÷Kc2 Earth Leakage Compensation Ne Channel Select (1, 2, auto) Cs Rated Condition ÷Kr Counter Resolution Cres Counter Pulse width CPW LED-Constant Cled MOP MON LED Normally 6400p/kWh Normally 1253p/s Channel 1 Power 641454p/s Channel 2 Power 641454p/s PRELIMINARY |
类似零件编号 - SA2007PPA |
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类似说明 - SA2007PPA |
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