Mitsumi electronic FR-F520-0.75K Multi-speed input compensation Pr, Not compensated, Compensated

PARAMETERS

<Setting>

•In Pr. 22, set the stall prevention operation level. Normally set it to 120% (factory setting). Set "0" in Pr. 22 to disable the stall prevention operation.

•To reduce the stall prevention operation level in the high-frequency range, set the reduction starting frequency in Pr. 66 and the reduction ratio compensation factor in Pr. 23.

Calculation expression for stall prevention operation level

Stall prevention operation level (%) = A+B [Pr.22-A				]	[ Pr.23-100	]
			Pr.22-B		100
where, A=	Pr.66 (Hz) Pr.22 (%)	, B=	Pr.66 (Hz) Pr.22 (%)
	output frequency (Hz)		120Hz

•By setting "9999" (factory setting) in Pr. 23, the stall prevention operation level is constant at the Pr. 22 setting up to 120Hz.

•Set "9999" in Pr. 22 to vary the stall prevention operation level using the analog signal (0-5V/0-10V) entered to the frequency setting auxiliary input terminal [1]. (Use Pr. 73 to select between 10V and 5V.)

•Use Pr. 148 and Pr. 149 to adjust the gain and bias of the analog signal.

•Set "0" in Pr. 154 to reduce the output voltage during stall prevention operation.

Note: 1. When Pr. 22 = "9999", terminal 1 is exclusively used for setting the stall prevention operation level. The auxiliary input and override functions are not activated.

CAUTION

Do not set a too small value as the stall prevention operation current. Otherwise, torque generated will reduce.

Test operation must be performed. Stall prevention operation during acceleration may increase the acceleration time.

Stall prevention operation during constant speed may change the speed suddenly. Stall prevention operation during deceleration may increase the deceleration time, increasing the deceleration distance.

Pr. 24 to Pr. 27 % Refer to Pr. 4 to Pr. 6.

4.2.13 Multi-speed input compensation (Pr. 28)

Pr. 28 "multi-speed input compensation"

Related parameters

Pr. 59 "remote setting function selection" Pr. 73 "0-5V/0-10V selection"

By entering a compensation signal into the frequency setting auxiliary input terminal 1 (Note 2), the speeds (frequencies) of multi-speed settings or the speed setting made by remote setting function can be compensated for.

Parameter	Factory	Setting Range	Remarks
Number	Setting
28	0	0, 1	0: Not compensated
			1: Compensated

Note: 1. Use Pr. 73 to select the compensation input voltage between 0 to ± 5V and 0 to ± 10V.

2.When any of "4, 5, 14 and 15" is set in Pr. 73, the compensation signal is entered into terminal 2. (Override functions)

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