Mitsumi electronic 55K, FR-F520-0.75K Second stall prevention Pr , Pr, 120%, Pr Setting Operation

PARAMETERS

4.2.21 Second stall prevention (Pr. 48, Pr. 49)

Pr. 48 "second stall prevention operation current"

Pr. 49 "second stall prevention operation frequency"

Related parameters

Pr. 22 "stall prevention operation level" Pr. 23 "stall prevention operation level compensation factor at double

speed"

Pr. 66 "stall prevention operation level reduction starting frequency"

Pr. 154 "voltage reduction selection during stall prevention operation"

Pr. 180 to Pr. 186

(input terminal function selection)

#The stall prevention operation level can be changed within the range from 0Hz to the frequency set inPr. 49.

#The stall prevention operation level can be changed by switching the external input signal on-off.

Parameter	Factory	Setting Range	preventionStall	currentoperation
Number	Setting
48	120%	0 to 150%
49	0	0 to 120Hz, 9999
			Pr.48

Acceleration

Deceleration/constant speed

Pr.49 Running frequency

<Setting>

•Set the stall prevention operation level in Pr. 48.

•Refer to the following list to set values in Pr. 49.

Pr. 49 Setting		Operation
0	Second stall prevention function is not activated.
0.01Hz to 120Hz	Second stall prevention function is activated according to the
	frequency as shown above.
	Second stall prevention function is activated according to the RT signal.
9999	RT signal ON	Stall level Pr. 48
	RT signal OFF	Stall level Pr. 22

Note: 1. When Pr. 49 = "9999", setting "0" in Pr. 48 disables the stall prevention function when the RT signal switches on. When Pr. 49 ≠ "9999" and Pr. 48 = "0", the stall prevention operation level is 0% when the frequency is equal to or less than the value set in Pr. 49.

2.When the stall prevention operation level signal input function is selected (Pr. 22 = 9999), setting "9999" in Pr. 49 changes the stall prevention operation level from the value of the stall prevention operation level signal (terminal 1 input) to the value set in Pr. 48 when the RT signal switches on.

3.When the RT signal is on, the second functions such as second acceleration/deceleration time are also selected.

4.When terminal assignment is changed using Pr. 180 to Pr. 186, the other functions may be affected. Check the functions of the corresponding terminals before making setting.

4

CAUTION

Do not set a too small value to the second stall prevention operation current. Otherwise, torque generated will decrease.

Pr. 50 % Refer to Pr. 42.

85