gefran BDI50 Series - Page 113

4-66
08- 17
Over current protection level
Range
【0.0~60.0】 A
08- 18
Over current protection time
Range
【0.0~1500.0】 s
 When the output current exceeds the setting value of 08-17 and then keep running exceeds
the setting value of 08-18, inverter will show “OL3” alarm and then stop running.
(When the output current lower than the setting value of 08-17, 08-18 will be reset, over
current protection function will be closed when 08-17 set to “0”.
Output current (
A)
Time(s)
(08-18)
(08-17)
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%)
Overload Protect Time (min)
1.5
2.9
7.9
Cold Start
100% 150% 200%
Motor Load Current (%)
(02-01 = 100%)
Overload Protect Time (min)
2.4
4.5
12.4
Low Speed
(0 Hz)