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Input example (Pr. 386 = 400Hz)
Input Pulse Frequency
Division Ratio (Pr. 384)
Maximum Number of Input
Pulses
*
1
Minimum Detectable
Frequency
*
2
0 (factory setting) Pulse input invalid
20 8kpps 1.5Hz
50 20kpps 1.0Hz
100 40kpps 0.5Hz
120 48kpps 0.5Hz
200 80kpps 0.5Hz
250 100kpps 0.5Hz
How to calculate the input pulse frequency division ratio
Use the following formula to calculate the input pulse frequency division ratio in Pr. 384:
*
1. Maximum number of input pulses (pps) = Pr. 384x400
*
2. Detectable frequency >
Pr. 386
2
16.6ms
Pr. 384
400
The detectable frequency changes with the maximum number of input pulses.
5.6. Specifications
Circuit system Open collector system
Input current 10mA
Max. permissible number of pulses 100kpps
Input pulse specifications 0 to 250 (variable frequency)
Response delay 16.6ms
Preset frequency resolution 0.012Hz/50Hz