Honeywell HVAC400x Applications Manual page 105

HVAC400X – APPLICATION MANUAL
Hz
ID103, ID104
ID500
ID500
t
Fig. 20. The acceleration/deceleration curve (S-shaped)
P3.4.6 ACCELERATION TIME 2 (ID 502)
You can use this parameter to set the time that is necessary for the output frequency to increase from zero
frequency to maximum frequency.
P3.4.7 DECELERATION TIME 2 (ID 503)
You can use this parameter to set the time that is necessary for the output frequency to decrease from maximum
frequency to zero frequency.
P3.4.8 RAMP TIME OPTIMIZER (ID 1808)
You can use this parameter to enable increase of the ramp time if voltage/current limit is reached.
If the ramp time optimizer is enabled, the deceleration time is increased by the percentage defined in parameter
P3.4.9 Ramp optimizing percentage every time the overvoltage controller is reached during deceleration. Similarly,
the acceleration time is increased when the current limit is reached during acceleration. There is also a parameter
for setting a max. limit for the ramp (P3.4.10). The ramp optimizer does not stretch the ramps above this limit.
NOTE: The ramp time optimizer only affects the settings of Ramp 1. Thus, Ramp 2 will not be modified.
105 EN2B-0417GE51 R0719