D4: Frequency Hold Function - YASKAWA J1000 Technical Manual

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d4: Frequency Hold Function

n d4-01: Frequency Reference Hold Function Selection
This parameter is effective when either of the digital input functions listed below is used.
• Accel/decel ramp hold function (H1-oo= A)
• Up/Down function (H1-oo = 10 and 11, sets the frequency reference by digital inputs)
Parameter d4-01 determines whether the frequency reference value is saved when the Run command is cleared or the power
supply is shut down.
No.
d4-01
The operation depends on with what function parameter d4-01 is used.
Setting 0: Disabled
• Acceleration Hold
The hold value will be reset to 0 Hz when the Run command is canceled or the drive power is switched off. The active
frequency reference will be the value the drive uses when it restarts.
• Up/Down
The frequency reference value will be reset to 0 Hz when the Run command is canceled or the drive power is switched off.
The drive will start from 0 Hz when restarted.
Setting 1: Enabled
• Acceleration Hold
The last hold value will be saved when the Run command or the drive power is switched off. The drive will use the value
that was saved as the frequency reference when it restarts. The accel/decel hold input must be enabled the entire time or else
the hold value will be cleared.
Power supply
Forward Run / Stop
Hold Accel/Decel
Frequency reference
Output frequency
• Up/Down
The frequency reference value will be saved when the Run command or the drive power is switched off. The drive will use
the frequency reference that was saved when it restarts.
Clearing the Value that was Saved
Depending on which function is used, the frequency reference value that was saved can be cleared by:
• Releasing the acceleration hold input.
• Setting an Up or Down command while no Run command is active.
YASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual
Parameter Name
Frequency Reference Hold Function Selection
OFF ON
OFF ON
Hold
Figure 5.12 Frequency Reference Hold with Accel/Decel Hold Function
http://nicontrols.com
Setting Range
ON
OFF
OFF
OFF ON
Hold
5.4 d: Reference Settings
Default
0 or 1
ON
ON
d4-01 = 1
d4-01 = 0
0
5
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