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S8AS-24006N Datasheet(PDF) 10 Page - Omron Electronics LLC |
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S8AS-24006N Datasheet(HTML) 10 Page - Omron Electronics LLC |
10 / 26 page 10 S8AS Chart 1: Operation Timing Chart 2: Operation Timing Alarm Functions Note: 1. Branch outputs are not cut off for the alarm functions 2. The voltage detection is performed on the voltage after AC/DC conversion in the interval circuits. The displayed voltage will be somewhat different from the value at the output terminals of the power source due to internal voltage drop. To confirm correct output voltages, measure the voltages at the branch output terminals. Chart 3: Operation Timing 28.8 V (Abnormal voltage tripping) 20 V (undervoltage detection) 0 24 V (Rated) Alarm display Tripping alarm output * Reset Undervoltage detection output * (Fixed) (Settable) 100 ms t A21 A10 20 ms * The undervoltage detection output and tripping alarm output are both photoswitch outputs. The output is normally ON and turns OFF when an alarm is detected. t (Settable) 3.8 A (Abnormal current tripping) 3.0 A (Normal current) 0 Alarm display Tripping alarm output * Within 20 ms for instantaneous detection and 100 ms for standard detection, or within 1000 ms for extended detection (depends on tripping type). A11 * The tripping alarm output is a photoswitch output. The output is normally ON and turns OFF when an alarm is detected. Function Operation Undervoltage detection output (Refer to Chart 1.) *1, *2 The voltage is monitored and notification is provided using the alarm display and output (LOW) if the preset voltage is exceeded for more than 80 ms. The alarm display will alternate between the voltage and the alarm code (A21). The primary voltage is measured at the input terminals. Undervoltage detection threshold setting range: 18.0 to 26.4 V in 0.1-V increments.The S8AS-24006N and S8AS-48008N are set to 20.0 V. (Cannot be changed.) Maintenance forecast monitor *1 The time that the power is ON is calculated as the S8AS run time and notification is provided using the alarm display and maintenance forecast monitor output (LFE) if the preset time is reached. The alarm display will alternate between the run time and the alarm code (A23). Display range: FUL (Full), HLF (Half), or 0.0 to 5.0 years. Over-temperature (Refer to Chart 3.) *1 The internal temperature of the S8AS is monitored using a built-in temperature sensor and notification is provided using the alarm display and over-temperature output (TMP) if the preset temperature is exceeded for more than 1 s. The alarm display will alternate between the temperature and the alarm code (A30). The over-temperature output is convenient for control operations, such as operating a cooling fan to suppress temperature increased in the control panel. Note: The alarm display and over-temperature output are automatically cleared if the temperature falls below the set temperature. Display range: −20 to 100°C in 1°C increments. Temperature setting range: 25 to 90 °C in 1°C increments. (Settable) t 0 A30 A30 A30 Temperature * Alarm display 50 °C Temperature * The alarm display and over-temperature output are automatically cleared (with hysteresis). The over-temperature output is a photoswitch output. It is normally ON and turns OFF when an alarm is detected. |
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