User manual OMRON H7CX-W

[. . . ] New Product Multifunction Counter/Tachometer H7CX-@-N Ultra-compact Counter Provides More Complete Functionality. Basic Features • Short body with depth of only 59 mm (for 12 to 24-VDC Models with Screw Terminals). *1 • Better readability with character height of 12 mm on 4-digit models and 10 mm on 6-digit models. • The present value display characters can be switched between red, green, and orange. *2 Safety and Reliability • New set value limit and counter functions have been added. Other Features • Front Panel can be changed to white or light gray. *3 • Models with two independent tachometer inputs have been added to the series. *1. For 100 to 240-VAC Models with Screw Terminals: 78 mm, Models with Sockets: 63. 7 mm (case dimension). *3. The Front Panel can be replaced with an optional Front Panel (except for Tachometer-only Models). Refer to Safety Precautions on page 52. Features Basic Features Ultra Short Body The body depth has been greatly reduced. [. . . ] Set the optimum number of times for the application. Counting Speed (cnts)★ Set the maximum counting speed (30 Hz/10 kHz) for CP1 input. If contacts are used for input signals, set the counting speed to 30 Hz. Processing to eliminate chattering is performed for this setting. Decimal Point Position (dp) Decide the decimal point position for the measurement value, OUT1 set value, and OUT2 set value. Prescale Value (pscl) It is possible to display the rate of rotation or the speed of a device or machine to which the H7CX is mounted by converting input pulses to a desired unit. If this prescaling function is not used, the input frequency (Hz) will be displayed. The relationship between display and input is determined by the following equation. Displayed value = f × α f: Input pulse frequency (number of pulses in 1 second) α: Prescale value (1) Displaying Rotation Rate Display unit rpm rps Prescale value (α) 1/N × 60 1/N Auto-zero Time (auto0) The display can be force-set to 0 if there is no pulse for a certain period of time. Set the auto-zero time to a time slightly longer than the estimated interval between input pulses. Accurate measurement is not possible if the auto-zero time is set to a time shorter than the input pulse cycle. Setting a time that is too long may also result in problems, such as a time-lag between rotation stopping and the alarm turning ON. The auto-zero time is not applied to pulse width measurements. Startup Time (stmr) To prevent undesired outputs resulting from unstable inputs immediately after the power supply is turned ON, it is possible to prohibit measurement for a set period of time, the startup time. It can also be used to stop measurements and disable outputs until the rotating body reaches the normal rate of rotation, after the power supply to the H7CX and rotating body are turned ON at the same time. Display Startup time Comparison value (lower limit) N: Number of pulses per revolution Example: To display the rate of rotation for a machine that outputs 5 pulses per revolution in the form Using the formula, set the prescale value (α) to 1/N × 60 = 60/5 = 12. Power supply Output (lower limit) Time (2) Displaying Speed Display unit m/min m/s Prescale value (α) πd × 1/N × 60 πd × 1/N 30 H7CX-A@-N Tachometer NPN/PNP Input Mode (imod)★ Select either NPN input (no-voltage input) or PNP input (voltage input) as the input format. For details on input connections, refer to Input Connections on page page 9. Output Hysteresis (hys) This setting can be used to prevent output chattering if the measurement value fluctuates slightly near the set value. The measurement value after prescaling is set. Comparison value 2 Display value Hysteresis Display Color (colr) Set the color used for the measurement value. Control output OFF Control output ON Comparison value 1 Hysteresis OUTX1 red grn org r-g *1 Red (fixed) Green (fixed) Orange (fixed) Measured value is displayed in red when both control outputs 1 and 2 are OFF. Measured value is displayed in green when both control outputs 1 and 2 are OFF. Measured value is displayed in red when both control outputs 1 and 2 are OFF. Measured value is displayed in orange when both control outputs 1 and 2 are OFF. Measured value is displayed in green when both control outputs 1 and 2 are OFF. Measured value is displayed in orange when both control outputs 1 and 2 are OFF. Measured value is displayed in green when either control output 1 or control output 2 is ON. Measured value is displayed in red when either control output 1 or control output 2 is ON. Measured value is displayed in orange when both control outputs 1 and 2 are OFF. [. . . ] As used herein, “including” means “including without limitation”; and “Omron Companies” (or similar words) mean Omron Corporation and any direct or indirect subsidiary or affiliate thereof. 14. 15. 16. 17. 18. Certain Precautions on Specifications and Use 1. Omron Companies shall not be responsible for conformity with any standards, codes or regulations which apply to the combination of the Product in the Buyer’s application or use of the Product. At Buyer’s request, Omron will provide applicable third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself is not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine, system, or other application or use. [. . . ]