Panasonic MINAS A3 Series manual Interface Circuit, Input Circuit

CN X5 Connector

Interface Circuit

Input Circuit

SI SI Connecting to sequence input signals

•Connect to a contact of switch and relay, or a transistor of an open collector output.

•Use a switch or relay for micro current so that insufficient contact can be avoided.

•Lower limit of the power supply (12 to 24V) should not be less than 11.4V in order to secure the appropriate level of primary current of the photo coupler.

12–24V	7	COM+4.7kΩ
		Servo-ON or
		other input
	Relay

12–24V	7	COM+4.7kΩ
		Servo-ON or
		other input

AI AI Analogue Command Input

•There are three analogue command inputs of SPR/RTQR (14 pins), CCWTL (16 pins) and CWTL (18 pins).

•The maximum permissible input voltage is ±10V. For the input impedance of these inputs, see the right figure.

•If you make a simplified circuit comprising a variable re- sistor (VR) and resistor (R), refer to the right figure.

When the variable range of each input is -10V to +10V, the VR should be a B type resistor of 2kΩ (min.1/2W). The R should be 200Ω (min.1/2W).

•The A/D converters for these inputs should have the fol- lowing resolution.

		SPR/TRQR 14	20kΩ
+12V				-	ADC
	R
				+	1
	VR	15	GND
		CCWTL 16	10kΩ	-
	-12V			+
	R	17	GND	10kΩ	ADC
					2
		CWTL 18	10kΩ	-
				+
				10kΩ

1) ADC1	(SPR and TRQR)	: 16 bits (including one bit for sign)
2) ADC2	(CCWTL and CWTL)	: 10 bits (including one bit for sign)

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