-6-
10/05
Trip Class
Application Description
5
Small fractional horsepower motors where acceleration times are almost
instantaneous or where extremely quick trip times are required
10
(Fast Trip) Hermetic refrigerant motors, compressors, submersible
pumps and general-purpose motors that reach rated speed in less than
4 seconds.
15
Certain
specialized
applications
20
(Standard Trip) This setting will protect most NEMA-rated, general-
purpose motors.
30
(Slow Trip) Motors with long acceleration times (>10 seconds) or high
inertia loads.
J Prefix
Programming any of the trip classes with the J Prefix will enable jam
protection. This additional protection is enabled 1 minute after the motor
starts and provides a 2-second trip time for motors exceeding 400% OC,
regardless of trip class.
LIn
Programming the trip class to LIn disables the normal trip classes and
enables a linear trip delay on overcurrent. The linear trip delay is set at
program position OPT1.
Table 4: Trip Class Descriptions
Figure 3: Overload Trip Curves
