Moteur de recherche de fiches techniques de composants électroniques |
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SA2005 Fiches technique(PDF) 6 Page - Sames |
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SA2005 Fiches technique(HTML) 6 Page - Sames |
6 / 16 page sames sames SA2005P http://www.sames.co.za 6/16 Figure 6: Multiplexing of the LED Drivers D1 DIR1 D3 DIR2 D4 VFAIL2 D2 VFAIL1 D5 DIR3 D6 VFAIL3 R9 R10 R11 PH/DIR PH1 PH2 PH3 DIR 1 DIR 2 DIR 3 DIR (Drive) PH (Sink) VFAIL 1 VFAIL 2 VFAIL 3 Channel 1 Channel 2 Channel 3 dr-01603 The PH/Dir output is used in conjunction with the LED driver outputs to display information about each individual phase, see figure 6. Phase LED Drivers (PH1, PH2, PH3) The LED driver outputs present either direction information or voltage information. The three LED driver outputs are used in conjunction with the PH/DIR output to display information about each individual phase (refer to figure 6) as follows: PH/DIR = 1 (Direction indication) When PH/DIR is high (logic 1) energy direction information for each individual phase is available on PH1, PH2 and PH3. A logic 0 indicates reverse energy flow and a logic 1 indicates positive energy flow. Reverse energy flow is defined as the condition where the voltage sense input and the current sense inputs are out of phase (greater than 90 degrees). Positive energy flow is defined as the condition where the voltage sense and current sense inputs are in phase. PH/DIR = 0 (Voltage fail / phase sequence error) When PH/DIR is low (logic 0) voltage information is available on PH1, PH2 and PH3. A logic 0 on any of these pins indicates a voltage failure, the SA2005P does not detect a zero crossing on the applicable voltage sense input. Referring to figure 6 the voltage fail LED will be on when the voltage phase is present and off when the voltage phase is missing. In the case of a phase sequence error all three LED driver outputs PH1, PH2 and PH3 will pulse with a repetition rate of approximately 1Hz. |
Numéro de pièce similaire - SA2005 |
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Description similaire - SA2005 |
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