Mitsubishi Electronics FR-F700 instruction manual Pr. Noise elimination at the analog 74 input

Pr. Noise elimination at the analog 74 input

Pr.74 Input filter time constant

The time constant of the primary delay filter relative to external frequency command (analog input (terminal 1, 2, 4) signal) can be set.

￿Valid for eliminating noise of the frequency setting circuit.

￿Increase the filter time constant if steady operation cannot be performed due to noise.

A larger setting results in slower response. (The time constant can be set between approximately 10ms to 1s with the setting of 0 to 8.)

Pr. Reset selection, disconnected PU 75 detection

Pr.75 Reset selection/disconnected PU detection/PU stop selection

You can select the reset input acceptance, disconnected PU (FR-DU07) connector detection function and PU stop function.

Pr.75	Reset Selection	Disconnected	PU Stop
Setting		PU Detection	Selection
0	Reset input normally	If the PU is
	enabled.
		disconnected,
	Reset input enabled
1		operation will be	Pressing
	only when the protective	continued as-is.
	function is activated.		decelerates the
2	Reset input normally	When the PU is	motor to a stop only
	enabled.	disconnected,	in the PU operation
	Reset input enabled	the inverter	mode.
3	only when the protective	output is shut
	function is activated.	off.
14	Reset input normally
(initial		If the PU is
	enabled.
value)		disconnected,
			Pressing
	Reset input enabled	operation will be
			decelerates the
15	only when the protective	continued as-is.
	function is activated.		motor to a stop in
	Reset input normally	When the PU is	any of the PU,
16			external and
	enabled.	disconnected,	communication
	Reset input enabled	the inverter	operation modes.
17	only when the protective	output is shut
	function is activated.	off.

￿Reset selection

⋅You can select the operation timing of reset function (RES signal, reset command through communication) input

￿Disconnected PU detection

⋅This function detects that the PU (FR-DU07/FR-PU04) has been disconnected from the inverter for longer than 1s and causes the inverter to provide an alarm output (E.PUE) and come to an alarm stop.

￿PU stop selection

⋅In any of the PU operation, external operation and network

operation modes, the motor can be stopped by pressing of the PU.

Pr. 76 Output function of alarm code

Pr.76 Alarm code output selection

At alarm occurrence, its description can be output as a 4-bit digital signal from the open collector output terminals.

The alarm code can be read by a programmable controller, etc., and its corrective action can be shown on a display, etc.

Pr.76 Setting	Description
0 (initial value)	Without alarm code output

1With alarm code output (Refer to the following table)

2Alarm code output at alarm occurrence only (Refer to the following table)

￿The following table indicates alarm codes to be output. (0: output

transistor off, 1: output transistor on)

Operation Panel	Output of Output Terminals				Alarm Code
Indication
	SU	IPF	OL	FU
(FR-DU07)
Normal *	0	0	0	0	0
E.OC1	0	0	0	1	1
E.OC2	0	0	1	0	2
E.OC3	0	0	1	1	3
E.OV1 to E.OV3	0	1	0	0	4
E.THM	0	1	0	1	5
E.THT	0	1	1	0	6
E.IPF	0	1	1	1	7
E.UVT	1	0	0	0	8
E.FIN	1	0	0	1	9
E.BE	1	0	1	0	A
E. GF	1	0	1	1	B
E.OHT	1	1	0	0	C
E.OLT	1	1	0	1	D
E.OPT	1	1	1	0	E
E.OP1	1	1	1	0	E
Other than the	1	1	1	1	F
above

*When Pr. 76 = "2", the output terminals output the signals assigned to Pr. 190 to Pr. 196.

Pr. 77 Prevention of parameter rewrite

Pr.77 Parameter write selection

You can select whether write to various parameters can be performed or not. Use this function to prevent parameter values from being rewritten by misoperation.

Pr. 77 Setting	Description
0 (initial value)	Write is enabled only during a stop

1Parameter write is not enabled.

2Parameter write is enabled in any operation mode regardless of operation status.

Pr. Prevention of reverse rotation of 78 the motor

Pr.78 Reverse rotation prevention selection

This function can prevent reverse rotation fault resulting from the incorrect input of the start signal.

Pr.78 Setting	Description
0 (initial value)	Both forward and reverse rotations allowed

1Reverse rotation disabled

2Forward rotation disallowed

		Features
Peripheral Devices		Why energy		savings?
	Standard		Specifications
Outline		Dimension		Drawings
Terminal Connection	Diagram		Terminal Specification		Explanation
	Operation		Panel
	Parameter		List
Explanations		of		Parameters
	Protective		Functions
		Options
		Instructions
		Motor
		Compatibility
		Warranty
		Inquiry

Pr. indicates simple mode parameters and Pr. indicates extended parameters. When setting parameters, refer to the instruction manual (applied) and understand instructions. 36