Omron FQM1-MMP21 Circuit Current Characteristic Required element, Name Model Cable length

Conformance to EC Directives						4
	Circuit		Current		Characteristic	Required element
			AC	DC
Diode method			No	Yes	The diode connected in parallel with	The reversed dielectric strength value
					the load changes energy accumulated	of the diode must be at least 10 times
					by the coil into a current, which then	as large as the circuit voltage value.
	Power	Inductive load			resistance of the inductive load.	current.
					flows into the coil so that the current	The forward current of the diode must
					will be converted into Joule heat by the	be the same as or larger than the load
	supply				This time lag, between the moment the	The reversed dielectric strength value
					circuit is opened and the moment the	of the diode may be two to three times
					load is reset, caused by this method is	larger than the supply voltage if the
					longer than that caused by the CR	surge protector is applied to electronic
					method.	circuits with low circuit voltages.

Varistor method	Yes	Yes	The varistor method prevents the impo-	---
			sition of high voltage between the con-
			tacts by using the constant voltage
Power	Inductive load		characteristic of the varistor. There is
			time lag between the moment the cir-
			cuit is opened and the moment the load
supply			is reset.

If the supply voltage is 24 or 48 V, insert the varistor in parallel with the load. If the supply voltage is 100 to 200 V, insert the varistor between the contacts.

When switching a load with a high inrush current such as an incandescent lamp, suppress the inrush current as shown below.

Countermeasure 1	Countermeasure 2
	R
OUT	OUT
R
COM	COM
Providing a dark current of approx.	Providing a limiting resistor
one-third of the rated value
through an incandescent lamp

The following Unit and Cables can be used with the FQM1-series Flexible

Motion Controller.

Name	Model	Cable length
Relay Unit	XW2B-80J7-1A	---
Controller Connect-	XW2Z-050J-A28	0.5 m
ing Cables	XW2Z-100J-A28	1 m
	XW2Z-050J-A30	0.5 m
	XW2Z-100J-A30	1 m
	XW2Z-050J-A31	0.5 m
	XW2Z-100J-A31	1 m

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