User manual OMRON ZEN V2 DATASHEET

[. . . ] Programmable Relay ZEN V2 Units Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or comments. Refer to "Warranty and Application Considerations" on page 36, and "Precautions for Safe Use" on page 34. Even Broader Applications with Increased Functionality and Higher Precision · Increased functionality in a compact body (70 mm wide × 90 mm high). · Easy programming is available using the LCD and operation buttons. [. . . ] Basic Operation Main Applications When delayed operation or a time lag is required. Stays ON while the trigger input is ON and turns OFF after a set delay after the trigger input has turned OFF. Basic Operation Trigger input Timing Output : OFF-delay timer Trigger input Reset input Setting Present value 0 Timer bit Main Applications Useful for OFF delay circuits for lights or fans Turns ON for a set period after the trigger input turns ON and regardless of how long the trigger input remains ON. Basic Operation Trigger input O: One-shot pulse timer Trigger input Reset input Setting Present value 0 Timer bit Timing Output Main Applications Useful for set operations where operation is always required during a regular period only. Repeatedly turns ON and OFF in a set cycle while the trigger input is ON. Basic Operation Trigger input Timing Output Timing Timing Timing F: Flashing pulse timer Trigger input Reset input Setting Present value 0 Timer bit Main Applications Useful for flashing emergency lights or sounding buzzers as the output for an alarm circuit. Repeatedly turns ON and OFF in a set cycle while the trigger input is ON. Basic Operation Trigger input Timing Timing Timing Timing (OFF-time) (ON-time) (OFF-time) (ON-time) Output W: Twin timer Trigger input Reset input ON-time OFF-time Present value 0 Timer bit Main Applications Useful for intermittent (ON/OFF) operation, such as that used for fans. 3. Using Holding Timers X: ON-delay timer Trigger input Reset input Setting Present value 0 Turns ON after set delay after the trigger input turns ON. Main Applications To continue operation after momentary power loss or power interruptions. Also can be used when delayed operation or a time lag is required. Timer bit 20 Programmable Relay ZEN V2 Units 4. Counter Operation Counter direction specification input Counter input Reset input Set value Present value 0000 Counter bit The counter bit turns ON when the counter value (present value) reaches the set value (present value set value). The counter returns to 0 and the counter bit turns OFF when the reset input turns ON. The counter present value and counter bit (ON/OFF) are held even if the operating mode is changed or the power supply is interrupted. 5. 8-digit Counter Operation Count speed H High speed Counter direction specification input Counter input Reset input Operation The counter bit turns ON when the counter value (present value) reaches the set value (present value set value). The counter returns to 0 and the counter bit turns OFF when the reset input turns ON. The counter present value and counter bit (ON/OFF) are held even if the operating mode is changed or the power supply is interrupted. High-speed Operation For CPU Units with DC power supply, high-speed operation is possible for input I0 only. (Maximum counting speed: 150 Hz) L Low speed Set value Present value 00000000 Counter bit Counting Speed of the 8-digit Counter The maximum counting speed of the 8-digit counter is 150 Hz. When the ladder program volume is large, however, this speed will be less than 150 Hz. Calculate the cycle time and confirm the maximum counting speed using the following formula. The calculation serves as a guide only, so allow a suitable margin in the actual machine. [. . . ] · Assembling the ZEN · Connecting or disconnecting any cables or wiring · Attaching or removing the Memory Cassette · Attaching or removing the Battery Unit · If the power supply is interrupted for two days or more (at 25°C), the internal capacitor will discharge and internal bit status and the contents of PV areas will be lost or corrupted and dates and times will be reset. When restarting operation after the power supply has been interrupted for an extended period of time, check the system in advance to confirm that no errors will occur. Handling · Connect connectors only after confirming that the direction or polarity is correct. Always connect the connector cover to the computer connector whenever it is not being used. · Do not remove the label from the left side of the CPU Unit if a Battery Unit is not mounted. Other · The execution of the ladder program in the ZEN is different from that for other PLCs. [. . . ]