Fuji Bikes 5000G11S/P11S instruction manual Example of noise prevention

	FMP	Frequency monitor		Outputs a monitor signal using the pulse waveform.
Pulse output	(CM:	(pulse waveform output)		This signal has the same function as the FMA signal.
	Common
	terminal)
				A running signal, frequency equivalence signal, overload early warning
	Y1	Transistor output1		signal, and other signals from the			inverter are		output (as		transistor
				output) to arbitrary ports, For details, see "Setting the							Terminal
	Y2	Transistor output2		Functions E20 to E23" in Section 5.2, "Details of Each Function."
	Y3	Transistor output3			<Specifications of transistor output circuit>
	Y4	Transistor output4	*
					Item			min.		typ.	max.
				Operating		ON level		-		2V	3V
				voltage		OFF level		-		24V	27V
Transistor				Maximum load current at ON level				-		-	50mA
				Leakage current at OFF level				-		-	0.1mA
output

	CME	Transistor output	Common terminal for transistor output signals
		common	This terminal is insulated from terminals [CM] and [11].
	30A,30B,	Alarm output for any fault	If the inverter is stopped by an alarm (protective function), the alarm
	30C		signal is output from the relay contact output terminal (1SPDT).
			Contact rating: 48V DC, 0.5A
			An excitation mode (excitation at alarm occurrence or at normal
Relay output			operation) can be selected.
	Y5A,Y5C	Multipurpose-signal relay	These signals can be output similar to the Y1 to Y4 signals above.
		output	The contact rating for any fault is the same as that of the alarm output
			above.
			An excitation mode (excitation at alarm occurrence or at normal
			operation) can be selected.
	DX+, DX-	RS-485 communication	Input-output signal terminals for RS-485 communication. UP to 31
Communication		input-output	inverters can be connected using the daisy chain method.
	SD	Communication-cable	Terminal for connecting the shield of a cable. The terminal is
		shield connection terminal	electrically floating.

(1)Analog input terminals (13,12,V2,C1,and 11)

①These terminals receive weak analog signals that may be affected by external noise. The cables must be as short as possible (66ft (20m) or less), must be shielded, and must be grounded in principle. If the cables are affected by external induction noise, the shielding effect may be 0k to 5 kΩ improved by connecting the shield to terminal [11].

② If contacts must be connected to these circuits, twin (bifurcated type) contacts for handling weak signals must be used. A contact must not be connected to terminal [11].

③If an external analog signal output device is connected to these terminals, it may malfunction as a result of inverter noise. To prevent malfunction, connect a ferrite core or capacitor to the external analog signal output device.

Fig. 2-3-12

Fig. 2-3-13 Example of noise prevention

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