YASKAWA HV600 User Manual

5.4 d: References
240 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
◆ d4: Frequency Ref Up/Down & Hold
The d4 parameters set the Frequency Reference Hold function and Up/Down commands.
• Frequency Reference Hold Function Command: This acceleration/deceleration ramp hold command uses an MFDI
to momentarily stop the acceleration/deceleration of the motor, and continues to operate the motor at the output
frequency at which the command reference was input. Turn OFF the acceleration/deceleration ramp hold command
to continue acceleration/deceleration.
• Up/Down command: The Up/Down command is a function to activate and deactivate an MFDI to increase and
decrease the frequency reference. The Up/Down command overrides frequency references from the analog input
terminal and keypad.
■ d4-01: Freq Reference Hold Selection
No.
(Hex.)
Name Description
Default
(Range)
d4-01
(0298)
Freq Reference Hold
Selection
Sets the function that saves the frequency reference after a Stop command or when de-energizing the
drive.
0
(0, 1)
Set H1-xx [MFDI Function Selection] to one of these values to enable this parameter:
• A [Accel/Decel Ramp Hold]
• 10/11 [Up/Down Command]
0 : Disabled
• Acceleration/Deceleration Ramp Hold
When you enter a Stop command or de-energize the drive, the hold value is reset to 0 Hz. The drive will use the
active frequency reference when it restarts.
• Up/Down Command
When you enter a Stop command or de-energize the drive, the frequency reference value is reset to 0 Hz. The drive
will start from 0 Hz when it restarts.
1 : Enabled
• Acceleration/Deceleration Ramp Hold
When you clear the Run command or de-energize the drive, it will save the last hold value. The drive will use the
saved value as the frequency reference when it restarts.
Note:
When you energize the drive, continuously enable the MFDI terminal set for Accel/Decel Ramp Hold [H1-xx = A]. If the digital input does
not activate, the drive will clear the hold value and set it to 0 Hz.
Figure 5.36 Frequency Reference Hold with Accel/Decel Hold Function
• Up/Down Command
When you clear the Run command or de-energize the drive, it will save the frequency reference value. The drive
will use the saved value as the frequency reference when it restarts.

YASKAWA HV600 Specifications

General

Category	DC Drives
Series	HV600
Overload Capacity	150% for 60 seconds
Output Voltage	0 - Input Voltage
Enclosure	NEMA 1, NEMA 12
Communication	Ethernet/IP, Modbus, DeviceNet, Profibus
Safety	Safe Torque Off (STO)
Protection Features	Overcurrent, Overvoltage, Undervoltage, Short Circuit
Humidity	5-95% (non-condensing)
Altitude	Up to 1000m (3280ft) without derating
Control Method	Vector Control