TECO L510S Series - Page 115

4-70
08- 19 Motor Overload (OL1) Protection Level
Range
0：Motor Overload Protection Level 0
1：Motor Overload Protection Level 1
2：Motor Overload Protection Level 2
Motor overload protection level (08-05)
 Set motor overload protection level according to current motor nameplate.
 Turn off the motor overload protection when using two or more motors connected to the
inverter (set 08-05 = xxx0b), and provide external overload protection for each motor (e.g.
thermal overload switch).
 When 08-05=xx1xb (Hot start), the value of hot start will be reset once power-off.
 The motors without cooling fan (general standard motor), heat dissipation of lower speed is
low, 08-05 can be set to x0xxb.
 The motors with cooling fan (special motor or V/F motor), heat dissipation is not related with
output speed, 08-05 can be set to x1xxb.
 To use the built-in motor overload protection function parameter 02-01 (motor rated current)
has to match the motor rated current on the motor nameplate.
 Refer to the following examples (08-05=x0xxb) and the overload curves will be based on
parameter setting of 08-19.
When 08-19=0:
Low Speed
(0 Hz)
Hot Start
100% 150% 200%
Motor Load Current (%)
(02-01 = 100%)
O
v
e
r
loa
d
P
r
o
t
e
c
t
T
i
me
(
m
i
n
)
1.5
2.9
7.9
Cold Start
100% 150% 200%
Motor Load Current (%)
(02-01 = 100%)
O
v
e
r
loa
d
P
r
o
t
e
c
t
T
i
me
(
m
i
n
)
2.4
4.5
12.4
Low Speed
(0 Hz)
High Speed
(60Hz)
Hot Start
116% 150% 200%
Motor Load Current (%)
(02-01 = 100%)
O
v
erload
Prote
c
t
T
ime
(mi
n
)
1.7
3.9
28.8
start activacted point
High Speed
(60Hz)
Cold Start
116% 150% 200%
Motor Load Current (%)
(02-01 = 100%)
O
v
erload
Prote
c
t
T
ime
(mi
n
)
2.7
6.1
45.2
start activacted point
When 08-19=1:

Low Speed
(1.5 Hz)
Hot Start
100% 150% 200%
Motor Load Current (%)
(02-01 = 100%)
O
v
e
r
loa
d
P
r
o
t
e
c
t
T
i
me
(
m
i
n
)
1.7
3.2
8.9
Cold Start
100% 150% 200%
Motor Load Current (%)
(02-01 = 100%)
O
v
e
r
loa
d
P
r
o
t
e
c
t
T
i
me
(
m
i
n
)
2.8
5.3
14.9
Low Speed
(1.5 Hz)