Hitachi P1

Page 11
ACCELERATION / DECELERATION TIMES
When adjusting the deceleration times be sure to check the hook block limit for over travel. If over travel occurs either lower the
deceleration time or adjust the limit zones.
Changing the acceleration time to a shorter time can cause a E01 over-current or E05 over-load fault /trip, if this occurs due to a short
acceleration time increase the acceleration time and test again.
Changing the deceleration time to a shorter time can cause a E07 over-voltage fault/trip, if this occurs due to a short deceleration
time increase the deceleration time and test again.
Use the chart below to configure the standard acceleration and deceleration times.
Function
Parameters
Example Value
Acceleration Time
AC120 2.50 seconds
Deceleration Time
AC122 1.00 seconds
Acceleration Curve
AC-03
00 = liner-curve
01 = S-curve (default)
02 = U-curve
03 = Reverse U-curve
Deceleration Curve
AC-04
00 = liner-curve
01 = S-curve (default)
02 = U-curve
03 = Reverse U-curve
ALTERNATE ACCELERATION / DECELERATION TIMES
The alternate acceleration and deceleration function can be used to switch from the standard acceleration and deceleration times to
an alternate acceleration and deceleration time based on a digital i
reverse plugging). If you plan to use switch by input [2CH] you will need to configure an available digital input function for 31:[2CH]
(example CA-06 = 31) and add the 24v circuit for that input.
Use the chart below to configure the standard acceleration and deceleration times.
Function
Parameters
Example Value
ALT Acceleration Time
AC124 2.50 seconds
ALT Deceleration Time
AC126 1.00 seconds
Method to switch to
ALT Accel / Decel
AC115
00 = Switching by input [2CH]
(configure available digital input function to 31: 2CH)

02 = Switching by direction reversal
Accel to ALT Accel break point
AC116 15.00 Hz
Decel to ALT Decel break point
AC117 15.00 Hz