Input Response Time Setting Function - Mitsubishi Electric CC-Link IE-NZ2GNSS2-8D User Manual

8.3

Input Response Time Setting Function

This function is used to set the filter time to reduce incorrect inputs caused by noise in input signals.
The longer the input response time is, the higher tolerance for chattering and noise the module has. But the response to input
signals becomes slower.
The shorter the input response time is, the quicker the response to input signals is. But the tolerance for chattering and noise
is reduced.
To set the input response time, consider fully the operating environment.
Ex.
When Input response time is set to "0: 1ms"
Without any noise effects, the time set in input response time and the time taken from when an external input (1) turns on or
off until when the corresponding X input signal (2) in the safety remote I/O module turns on or off are equal.
ON
(1)
OFF
ON
(2)
OFF
1ms 1ms
The minimum value of input response time is set to 1ms for the safety remote I/O module, with the internal
circuit diagnostic taken into account. When connecting the safety remote I/O module to an external device that
generates OFF pulses, set Input response time to the following value: Minimum value of input response time
+ Pulse OFF time of the external device or longer.
When the set input response time does not include the pulse OFF time of the external device, an OFF pulse of
the external device may be detected as an OFF signal.
Setting method
Set the input response time in "Input response time" from the "Parameter of Slave Station" window of the engineering tool.
Item
Input response time Xn
When "Wiring selection of input" Xn (n: even number) is set to "1: Safety double wiring (NC/NC)", only the
same value as Xn can be set for Xn+1, the partner of "Input response time" Xn. If a different value is set, a
parameter data error (input response time) (error code: 0564H) occurs.
Relation of the parameters for the input response time and input dark test
Set the input response time to satisfy the following condition.
Input response time > Input dark test pulse output time
*1 Pulse output time for the input dark test = Pulse OFF time for the input dark test  ((Number of pulse outputs for the input dark test  2)
- 1)
For details on the input dark test, refer to the following.
Page 93 Input dark test function
8 FUNCTIONS
74
8.3 Input Response Time Setting Function
Setting range
0: 1ms
1: 1.5ms
2: 5ms
3: 10ms
4: 20ms
5: 50ms
6: 70ms
*1