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SPX advanced – description of parameters
SPX ADVANCED APPLICATION MANUAL
SVCH0203—October 2017 www.eaton.com
Code
ID
Parameter
Notes
P1.2.10.3
518
Ramp time factor for prohibited range “RampTimeFactor”
Multiplier of the currently selected ramp time between prohibit frequency limits.
5.2.6 Motor potentiometer
Motor potentiometer is used to control the reference with
two digital inputs, one increasing the reference and the other
decreasing the reference. The reference change rate can be
set by parameter [Hz/s]. Motor potentiometer reference is
available in I/O control only. It can be changed only when the
drive is in running state.
High Lim
Speed [RPM]
Ramp Time
Factor = 0,3
Time[s]
Ramp Time
Factor = 2,5
Low Lim
Figure 5-1 . Ramp rate scaling between prohibit frequencies
Time
[s]
Max
Speed
Min
Speed
Speed Ref
[RPM]
Motor Potentiometer
UP
Motor Potentiometer
DOWN
Motor Potentiometer
Ramp Rate
Code
ID
Parameter
Notes
P1.2.11.1
331
Motor potentiometer ramp rate “motpot ramp rate”
Defines the rate of change of the motor potentiometer reference value in Hz/s. Normal
ramp times are still active and determine how fast the actual output frequency
increases.
P1.2.11.2
367
Motor potentiometer reference reset “MotPotRef reset”
0 “No reset”
Reference is kept past the stop state and stored to memory in case of a power down.
1 “Stop State”
Reference is set to zero when the drive is in stop state. This selection includes power
down situations.
2 “Power Down”
Reference is reset only in a power down situation.
Other parameters related to function
•
P1.4.2.8 Motor potentiometer DOWN ID417 “Mot Pot Ref Down”
•
P1.4.2.9 Motor potentiometer UP ID418 “Mot Pot Ref Up”