Eaton M-Max Series User Manual page 109

Protective Functions, continued
Access
PNU ID RUN
P8.10 1430 X
P8.11 1473 —
P8.12 714
P8.13 715
Value/Range Description
— Analog minimum reference error, reaction time
0.0–10.0s (see parameter P8.1)
— (Not used)
— Underload low torque limit
10–50% Motor torque
The underload protection enables faults such as a torn drive belt
or the dry running of a pump to be detected without any
additional sensors
The reaction to a detected underload can be set at P8.5
The value set here determines the lowest permissible torque
limit. This function can also be used with output frequencies
that are above the cutoff frequency (P11.2, field weakening
point)
Note: The value set here is reset automatically to the factory
setting (50.0%) if the parameter for the motor rated current
(P7.1) is changed
Underload Limit
M ~ I
P8.12
P8.13
5 Hz
— Underload, low torque limit at zero frequency
5–150% Motor torque
The value set here determines the lowest permissible torque
limit at zero frequency (range 0–5 Hz)
Note: The value set here is reset automatically to the factory
setting (50.0%) if the parameter for the motor rated current
(P7.1) is changed
M-Max Series Adjustable Frequency Drive MN04020003E—October 2013 www.eaton.com
f
P11.2
Parameters
Factory Setting
(P1.3)
0.5
0
60.0
10.0
93