Weq CTW900, Руководство пользователя

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Detailed Description of the Parameters .
108 | CTW900
Therefore, if the torque is above the setting in P0355 and the motor speed is below the value of P0139, the
converter may be disabled with fault F077 if it remains in this condition for a period longer than the setting in
P0137.
P0156 – Overload Current
P0157 – Current without Overload
Adjustable Range: 0 to 1.25x I
rat
Factory Setting:
P0156 = 1.25 x I
rat
P0157 = 1.0 x I
rat
P0158 – Overload Protection Time
Adjustable Range: 5 to 600 s Factory Setting: 300 s
Properties:
Groups of
01 PARAMETER GROUPS
Access via HMI:  38 Protections ........
Description:
These parameters are used for the protection against motor overload (Ixt – F072).
The current without overload (P0157) defines the value of the armature current after which the Ixt protection will
start actuating. The overload current (P0156) establishes the current level for the protection to actuate in the
time set in P0158.
For armature current values (P0003) lower than P0156 and higher than P0157, the actuation time of the
protection Ixt will be calculated by the following relation:
A 072
( ) = ( 0156 ÷ 0003)
× 0158
Figure 7.16 – Curve of actuation of the protection Ixt
Note:
■
The factory settings are calculated to protect the converter. For the protection of the motor, check the levels
of rated current and overload in the motor data sheet.
NOTE!
The protection will be inactive if the setting of P0156 is smaller or equal to P0157, or if P0348 is
configured for 0 (Inactive) or 3 (Alarm).
P0340 – Auto-Reset Time
Adjustable Range: 0 to 600 s Factory Setting: 0 s
Properties:
Groups of
01 PARAMETER GROUPS
Access via HMI:

38 Protections ........