Parameter Details
12
12.8 H: Terminal Function Selection
YASKAWA SIEPC71061753C GA500 Technical Manual 637
You can continue to view parameter setting values when the terminal is OFF [Parameter Write Prohibit].
ON : Programming Lockout
OFF : Parameter Write Prohibit
■ 1E: Reference Sample Hold
Setting Value Function Description
1E Reference Sample Hold
Sets the command to sample the frequency reference at terminal A1 or A2, and hold the frequency reference at that frequency.
When the terminal is active for 100 ms, this function reads a sample of the analog frequency reference and holds
that sample. When you input the sample/hold command again, the function again reads a sample of the analog
frequency reference and holds that sample. When you turn off the power, the drive erases the saved analog
frequency and resets the frequency reference to 0.
Figure 12.71 shows an example of how the function operates.
Figure 12.71 Reference Sample Hold
You cannot set the Reference Sample Hold function at the same time as these functions:
• H1-xx = A [Accel/Decel Ramp Hold]
• H1-xx = 10, 11 [Up Command, Down Command]
• H1-xx = 44 to 46 [Add Offset Frequency 1 to 3]
• H1-xx = 75, 76 [Up 2 Command, Down 2 Command]
If you set them at the same time, the drive will detect oPE03 [Multi-Function Input Setting Err].
■ 20 to 2F: External Fault
Setting Value Function Description
20 to 2F External Fault
Sets a command to stop the drive when a failure or fault occurs on an external device.
WARNING! Incorrect Operation. Yaskawa recommends that you use H1-xx = 21, 23, 25, 27, 29, 2B, 2D, 2F [External Fault (N.
C.)]. If a circuit error occurs in the MFDI, the drive cannot stop the output when the terminal set to H1-xx = 20, 22, 24, 26, 28,
2A, 2C, 2E [External Fault (N.O.)] turns ON.
If an external fault is input to the drive, the keypad will show EFx [External Fault (Terminal Sx)], where x is the
number of the terminal (terminal Sx) to which the external fault signal is assigned. For example, when an external
fault signal is input to terminal S3, the keypad will show EF3 [External Fault (Terminal S3)].
Use these conditions to select the value to set in H1-xx:
• Signal input method from peripheral devices
• External fault detection method
• Motor stopping method (operation after external fault detection)
Table 12.58 shows the relation between the conditions and the value set to H1-xx.
Table 12.58 Stopping Methods for External Fault
Setting
Signal Input Method from
Peripheral Devices
*1
External Fault Detection Method
*2
Stopping Method
N.O. N.C.
Always
Detected
Detected
during RUN
Only
Ramp to Stop
(Fault)
Coast to Stop
(Fault)
Fast Stop
(Fault)
Continuous
Operation
(Alarm Only)
20 x - x - x - - -
21 - x x - x - - -
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