User Manual of EM730 Series Inverter Principle of fixed-length counting: The length detection sensor converts the length information into pulse information. The DI terminal collects the number N of input pulses. N l 1 The length is calculated based on the set function code “Pulses per meter” and then compared with the “Set length” l . If 1 l l , it means that the length does not reach the set value; otherwise, the fixed-length count is completed. The “39: Clear length” input can be applied to clear the count and reset the output signal.
When the pulse frequency is greater than 250Hz (=1/(2 (default filtering times)*2*1ms -1 )), make sure of the input from the high-speed pulse input terminal (X5) and set F02.06 to “38: high-speed length count input”. 250Hz is only a theoretical value. The actual effect will prevail. In order to avoid errors, use the high-speed pulse input terminal wherever possible. Fig. 7-15 Example of Fixed-length Counting Fig. 7-15 shows an example, where F16.01=2 and F16.02=4.0. When the length count is 8 (=2Ч4), the “16: length reached” output will be valid. When the “39: clear length” input is valid, the count will be cleared, and the “16: length reached” output will be invalid.
EM730 series inverters support counting, as shown in Fig. 7-42. Pulse information is 305 Function code Function code name Parameter description Unit Default setting Attribute Mailing address F16.03 Set count value F16.04 ~ 65535 1,000 ● 0x1003 F16.04 Specified count value 1 ~ F16.03 1,000 ● 0x1004