Sharp CP-SR421 Instrukcja Użytkownika Pobierz pdf (Strona 333)

15. USING A DIRECT DRIVE MOTOR

15 - 16

Set [Pr. PL04] to "_ _ _ 4" to enable the torque deviation error detection.

[Pr.PL04]

Torque deviation error detection valid

When you compare the command torque ( 5)) and the feedback torque ( 6)) in figure 15.1, if the

deviation is more than the value of [Pr. PL07 Torque/thrust deviation error detection level] (1% to

1000%), [AL. 42 Servo control error] will occur and the linear servo motor will stop. The initial value

of this detection level is 100%. Replace the set value as required.

(d) Detecting multiple deviation errors

When setting [Pr. PL04] as shown below, multiple deviation errors can be detected. For the error

detection methods, refer to (1) (a), (b), (c) of this section.

[Pr.PL04]

Position deviation

error detection

Setting

value

Speed deviation

error detection

Torque deviation

error detection

15.4 Characteristics

15.4.1 Overload protection characteristics

An electronic thermal is built in the servo amplifier to protect the servo amplifier, the direct drive motor,

and direct drive motor power wires from overloads.

[AL. 50 Overload 1] occurs if overload operation performed is above the electronic thermal protection

curve shown in Fig. 15.2. [AL. 51 Overload 2] occurs if the maximum current is applied continuously for

several seconds due to machine collision, etc. Use the equipment on the left-hand side area of the

continuous or broken line in the graph.

When unbalanced torque is generated, such as in a vertical lift machine, it is recommended that the

unbalanced torque of the machine be kept at 70% or less of the motor's rated torque.

This servo amplifier has solid-state direct drive motor overload protection for each axis. (The direct drive

motor overload current (full load current) is set on the basis of 120% rated current of the servo amplifier.)

Torque deviation error detection enabled

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Sharp CP-SR421 Instrukcja Użytkownika Strona 333