LSIS sv-ip5a User Manual

Chapter 6 - Parameter Description [FU1]
6-20
To make the ETH function (Motor i
2
t) work correctly,
the motor cooling method must be selected correctly
according to the motor.
[Self-cool] is a motor that has a cooling fan
connected directly to the shaft of the motor. Cooling
effects of a self-cooled motor decrease when a motor
is running at low speeds. The Motor is easily heated
at low speed, compared to the motor at high speed
with the same current. The motor current is derated
as the motor speed decreases as shown below.
[Forced-cool] is a motor that uses a separate motor to
power a cooling fan. As the motor speed changes, the
cooling effect does not change. FU1-62 [Electronic
thermal level for continuous] set value is applied
regardless of operating frequency.
[Load Current Derating Curve]
[Motor i
2
t Characteristic Curve]
Note: Despite the motor current changing
frequently due to load fluctuation or acceleration
and deceleration, the inverter calculates the i
2
t
and accumulates the value to protect the motor.
FU1-64: Overload Warning Level
FU1-65: Overload Warning Time
The inverter generates an alarm signal when the
output current has reached the FU1-64 [Overload
Warning Level] for the FU1-65 [Overload Warning
Time]. The alarm signal persists for the FU1-65 even
if the current has become the level below the FU1-64.
Programmable Digital Output Terminal (AX-CX) is
used as the alarm signal output. To output the alarm
signal, set I/O-76 [Multifunction Auxiliary Contact
Output] to ‘OL’.
Note: FU1-64 is set as the percentage of FU2-43 [Rated
Motor Current].
[Overload Warning]
FU1 ► Motor type
63 Self-cool
0 63
Factory Default: Self-cool 0
100%
95%
65%
Output Current
20Hz 60Hz
Self-Cool
Forced-Cool
FU1 ► OL level
64 110 %
110
64
Factory Default: 110 % 110
FU1 ► OL time
65 10.0 sec
10.0
65
Factory Default: 10.0 sec 10.0
t1: FU1-65 [Overload Warning Time]
Output Current
Time
Time
FU1-64
[OL Level]
FU1-64
[OL Level]
AX-CX (OL)
ON
t1 t1
Load Current
Trip Time
[ETH 1 min]
1 minute
[ETH cont]

LSIS sv-ip5a Specifications

General

Brand	LSIS
Model	sv-ip5a
Category	Controller
Language	English