Lenze DDS Target 9300 Servo PLC V8.x Instrukcja Użytkownika Pobierz pdf (Strona 84)

2.12 MCTRL_MotorControl (node number 131)

9300 Servo PLC

System blocks

2−78

9300 Servo PLC EN 5.1

Self−ventilated motors

Due to the construction, self−ventilated standard motors are exposed to an increased heat

generation in the lower speed range compared to forced ventilated motors.

J Warnings!

For complying with the UL 508C standard, you have to set the speed−dependent evaluation of the

permissible torque via code C0129/x.

Parameter setting

The following codes can be set for I

x t monitoring:

Code Meaning Value range Lenze setting

C0066 Display of the I

x t load of the motor 0 ... 250 % −

C0120 Threshold: Triggering of error "OC6" 0 ... 120 % 0 %

C0127 Threshold: Triggering of error "OC8" 0 ... 120 % 0 %

C0128 Thermal motor time constant 0.1 ... 50.0 min 5.0 min

C0606 Response to error "OC8" TRIP, warning, off Warning

C0129/1 S1 torque characteristic I

rated

10 ... 200 % 100 %

C0129/2 S1 torque characteristics n

rated

10 ... 200 % 40 %

Effect of code C0129/x

0.9

00.1

C0129/2

0.2 0.3 0.4

0.6

0.7

0.8

1.0

1.1

0.132

I / I

n / n

C0129/1

9300STD350

Fig. 2−29 Working point in the range of characteristic lowering

The lowered speed / torque characteristic (Fig. 2−29) reduces the permissible thermal load of

self−ventilated standard motors. The characteristic is a line the definition of which requires two

points:

 Point 0: Definition with C0129/1

This value also enables an increase of the maximally permissible load.

 Point 1: Definition with C0129/2

With increasing speeds, the maximally permissible load remains unchanged (I

Mot

= I

rated

In Fig. 2−29, the motor speed and the corresponding permissible motor torque (3) can be read for

each working point (2on the characteristic (0 ... 1). 3 can also be calculated using the values in

C0129/1 and C0129/2 (evaluation coefficient "y", ¶ 2−79)

1 2 ... 79 80 81 82 83 84 85 86 87 88 89 ... 168 169

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