Schneider Electric Altivar 12 Manual De Usuario

BBV28581  05/2010

31

The R1 status relay is energized when the drive power is applied with no fault detected. It de-energizes in the event of a detected fault or
when the drive power is removed.

The drive is reset after a detected fault:

• by switching off the drive until the display disappears completely, then switching on again
• automatically in the cases described in the "automatic restart" function, 

FLt-

 menu, 

 set to 

YES

• via a logic input when this input is assigned to the "drive reset" function, 

FLt-

 menu, 

 

 page 

 set to L

p

H.

Thermal detection is provided by a built-in PTC probe in the power module.

Ratings up to 0.75 kW (1 HP) do not include a fan. The fan runs only when the drive thermal state requires ventilation.

Thermal detection by calculating the I

2

t.

Note: The motor thermal state memory returns to zero when the drive power is cycled if 

 page 

YES

The use of external overload protection is required under the following conditions:
• Repowering up the product since there is no motor thermal state memory.
• Running multiple motors
• Running motors rated at less than 20% of the nominal drive current
• Using motor switching

• This drive does not provide direct thermal protection for the motor.
• Use of a thermal sensor in the motor may be required for protection at all speeds or loading conditions.
• Consult the motor manufacturer for the thermal capability of the motor when operated over the desired speed range