CG emotron TSA Series, Instruction Manual

Page: 81 / 204

CG Drives & Automation, 01-5980-01r2 Functionality 77
Motor I
2
t Class [2313]
Classification according to IEC60947-4-2, defining the
starting capacities of the motor in order to avoid thermal
overload.
In this menu an internal protection class can be chosen,
which enables internal thermal motor protection. With this
setting a thermal curve as set out in Fig. 50 is configured. The
motor’s thermal capacity is calculated continuously based on
the chosen curve. If the thermal capacity exceeds 100% an
alarm occurs and the action chosen in menu [2311] is
performed. The alarm remains active until the motor model
cools down to 95% of its thermal capacity. The used thermal
capacity is shown in menu [2314]
Fig. 50 The thermal curve
Default:
Size 1: 10 A
Size 2 and up: 10
2 0 Class 2
3 1 Class 3
5 2 Class 5
10 A 3 Class 10 A
10 4 Class 10
20 5 Class 20
30 6 Class 30
40 7 Class 40
2313 Mot I
2
tClass
Stp M1: 10
Overload time (s)
Current (x I
n_mot
)
300% x I
n_mot
500% x I
n_mot
60 s
20 s
Normal duty start
Using motor overload trip class 10
Current: 3 x
In_mot
Overload trip time (max start time): 60 sec
Heavy duty start
Using motor overload trip class 10
Current: 5 x
In_mot
Overload trip time (max start time): 20 sec