2.3 b: Application
180 YASKAWA TOEPYAIGA5002A GA500 Programming
◆ b4: Timer Function
The drive uses timers to delay activating and deactivating MFDO terminals.
Timers prevent sensors and switches from making chattering noise.
There are two types of timers:
• Timers that set a delay for timer inputs and timer outputs.
These timers delay activating and deactivating of the MFDIs and MFDOs.
To enable this function, set H1-xx = 18 [MFDI Function Selection = Timer Function], and set H2-01 to H2-03 = 12
[MFDO Function Selection = Timer Output].
• Timers that set a delay to activate and deactivate MFDO terminals.
These timers delay activating and deactivating MFDO terminals.
To enable this function, set delay times in parameters b4-03 to b4-08.
■ Timer Function Operation
• Timers that Set a Delay for Timer Inputs and Timer Outputs
Triggers timer output if the timer input is active for longer than the time set in b4-01 [Timer Function ON-Delay
Time]. Triggers timer output late for the time set in b4-02 [Timer Function OFF-Delay Time]. Figure 2.25 shows an
example of how the timer function works.
Figure 2.25 Example of Timer Function Operation
• Setting On/Off-delay Time for MFDO
Figure 2.26 uses H2-01 terminals to show an example of how the timer function works. Use b4-03 [Terminal M1-
M2 ON-Delay Time] and b4-04 [Terminal M1-M2 OFF-Delay Time] to set this function.
Figure 2.26 Example of How the Timer Function Works with H2-01 Terminals
Note:
When the terminal is triggered, it continues for a minimum of 100 ms. The on/off-delay time of MFDO terminal does not have an effect.
■ b4-01: Timer Function ON-Delay Time
No.
(Hex.)
Name Description
Default
(Range)
b4-01
(01A3)
Timer Function ON-Delay
Time
Sets the ON-delay time for the timer input.
0.0 s
(0.0 - 3000.0 s)
■ b4-02: Timer Function OFF-Delay Time
No.
(Hex.)
Name Description
Default
(Range)
b4-02
(01A4)
Timer Function OFF-Delay
Time
Sets the OFF-delay time for the timer input.
0.0 s
(0.0 - 3000.0 s)
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