LiteOn EVO 6800 Series, Руководство пользователя

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6.7 Group P, Protections
P1
Motor Protection Function

P1-00 Motor Protection Function Selection
The drive has an overload protection using an electrothermal relay. The overload telarance is
calculated by the output current, output frequency and thermal motor characteristics. When
the motor overload is detected, an oL1 (Motor Overload) fault shuts off the drive output.
Set this parameter according to the motor being used.
No. Name Setting Range Default
P1-00 Motor Protection Function Selection 0 to 3 0
Note:
1. When the motor protection is enabled (P1-00≠0), an oL1 alarm can be output via the multi-function output
terminal assigned (E2-00 = 26). When the motor overload level exceeds 90% of the oL1 detection level, the output
terminal closes.
2. When the drive is running a single motor, set a value other than 0 to enable this function. An external thermal
relay is not required.
0 : Disabled (Motor Overload Protection Disabled)
Sets 0 (disabled) when using one drive to run more than one motor. Install an overload relay
between the drive and each motor as illustrated in Figure 6.71.
AC Drive M1
M2
Power
supply
MC1 oL1
MC2 oL2
MC1, MC2: Magnetic contactors
Thermal relay: oL1, oL2
Figure 6.71 Protection Circuit for Multiple Motors
NOTICE: When a drive is running more than one motor or a motor with a rated current higher than other standard
motors (such as a submersible motor), the termal protection cannot be provided. Set 0 to P1-00 to disable this
function and install an individual motor thermal relay for each motor. MC1 and MC1 cannot be switch on or off
during run.
1 : General-Purpose Motor (Standard Motor)