Hitachi NES1-002LB, Quick Reference Manual

Page: 102 / 295

Chapter 7 Explanation of Functions
7 - 27
7.5.9 Acceleration/Deceleration hold frequency setting
The acceleration/deceleration hold frequency setting function allows
you to make the inverter wait, upon starting the motor, until the
slipping of the motor becomes less when the load on the motor
causes a large moment of inertia.
Use this function if the inverter has tripped because of overcurrent when starting the motor.
This function can operate with every acceleration/deceleration pattern, regardless of the setting of the
acceleration/deceleration curve selection (A097/A098).
The method of this function has following two ways and can use both together.
- by the setting parameter (A069,A070,A154,A155)
- by terminal function (HLD)
Item Function code Range of data Description
Acceleration hold frequency
setting
A069 0.00 to 400.0(Hz)
Setting of the frequency at which to stop
acceleration
Acceleration hold time
setting
A070 0.0 to 60.0(s)
Setting of the length of time to stop
acceleration
Deceleration hold frequency
setting
A154 0.00 to 400.0(Hz)
Setting of the frequency at which to stop
deceleration
Deceleration hold time
setting
A155 0.0 to 60.0(s)
Setting of the length of time to stop
deceleration
Terminal function C001 to C005
83 HLD : Retatin output frequency function
1) by the setting parameter (A069,A070,A154,A155) 2) by terminal function (HLD)
7.5.10 Permission of Run command function (ROK)
While the (ROK) input is ON , the run command is valid.
To use this function, assign function "84" (ROK) to one of the terminal [1] to [5] functions (C001 to C005).
Item Function code Data Description
Terminal [1] to [5] functions C001 to C005 84 ROK: Permission of Run command function
ROK input
Output frequency
FW,RV input
A070
A069
Output frequency
time
A154
A155
HLD input
Output frequency
time