Hitachi WJ C1 Series

Chapter 9 Inverter Functions
9-15-3
9.15.2 Adjusting I/O Input Signal Response
 How to slow down the I/O input signal response?
 How to suppress I/O input signal chattering?
 Noise is introduced to the I/O input signal. How to set up the system to avoid noise?
 Setting a response time for the input terminals prevents false input due to chattering or noise.
 The response time can be set for each input terminal.
 All input signals are immediately turned on or off when the condition is satisfied. However,
chattering may occur depending on the signal selected. Use this function to hold/delay such
signals.
 The response time is ignored when power turns on and when the system is reset. For example, if
the power is turned on with the "Forward rotation [FW] (00)" input on, operation starts
immediately after the internal reset process, regardless of the response time setting.
Code
Item
Description
Data
[C160]
to
[C166]
Input terminal
response time
Sets the response time (detection delay time) when the
input terminal is turned on and off. The settings of [C160]
to [C166] correspond to the input terminals [1] to [7],
respectively.
The response time is approximately 0 to 400 ms as against
the set value of 0 to 200. (Set value × 2 ms)
0 to 200
Input terminal
behavior
Internal function
behavior
Input terminal
response time
ON
OFF
OFF
ON
Q
A
!