Panasonic EQ-500 Series Distance adjustment, Timer function EQ-5T only, Stability indicator

EQ-500

PRECAUTIONS FOR PROPER USE

Distance adjustment

•For DC-voltage type, be sure to set the BGS / FGS function before distance adjustment. If the setting is done after the distance ad- justment, the sensing area is changed.

•Turn the distance adjuster gradually and lightly with the attached adjusting screwdriver. Turning with excessive strength will cause damage to the adjuster.

Multi-voltage type, DC-voltage type • BGS select

Step	Description	Distance
		adjuster
1	Turn the distance adjuster fully counterclockwise
	to the minimum sensing range position. (0.2 m
	0.656 ft approx.)	Turn fully
	Please an object at the required distance from the
2	sensor, gradually turn the distance adjuster clock-
	wise to determine point a, where the sensor
	changes to the detecting state.
	Remove the object. Continue turning the adjuster
	clockwise until the sensor enters the detecting
	state again. Then turn the distance adjuster back
	a little untill the sensor returns to the non-detec-
3	ting state, called point b .
	If the sensor does not go into the detecting state
	even if the adjuster is turned fully clockwise, point b
	is regarded as the maximum position on the scale.
		Optimum
4	The optimum position to stably detect objects is	position
	the center point between a and b.

Timer function (EQ-5T only)

•EQ-5Tincorporates an OFF-delay timer, which is useful when the response of the connected device is slow, etc., and an ON-delay timer, which is useful for detecting objects that move slowly, for example.

•The OFF-delay and ON-delay timers can be used simultaneously.

•For DC-voltage type, set the DIP switch for the timer mode to ‘Timer ON’ side.

Time chart

Sensing
condition
Operation
Detection					ON
normal operation					OFF
Detection ON-delay	T				ON
					OFF
Detection OFF-delay					ON
		T	T	T	OFF
Detection ON / OFF-delay					ON
	T	T			OFF
Non-detection					ON
normal operation					OFF
Non-detection ON-delay					ON
		T	T	T	OFF
Non-detection OFF-delay					ON
	T				OFF
Non-detection	T	T			ON
ON / OFF-delay					OFF

Timer period: T = 0.1 to 5 sec. (variable)

DC-voltage type • FGS select

Step	Description	Distance
		adjuster
1	Turn the distance adjuster fully clockwise to the
	maximum sensing range position. (2.5 m 8.202 ft
	approx., 1.0 m 3.281 ft approx. for EQ-512)	Turn fully
	In the state where the sensor detects the back-
2	ground, gradually turn the distance adjuster coun-
	terclockwise, to determine point a where the
	sensor changes to the non-detecting state.
	Place an object at the required distance from the sensor,
	turn the adjuster counterclockwise further until the sen-
	sor goes into the non-detecting state again. Once enter-
3	ed, turn the adjuster backward a little until the sensor re-
	turns to the detecting state, called point b .
	If the sensor does not go into the non-detecting state
	even if the adjuster is turned fully counterclockwise, point
	b is regarded as the maximum position on the scale.
		Optimum
4	The optimum position to stably detect objects is	position
	the center point between a and b .

202

Stability indicator

•Since the EQ-500series uses a 2-segment photodiode as its receiving element, and sensing is done based on the difference in the incident beam angle of the reflected beam from the sensing object, the output and the operation indicator (orange) operate according to the object distance.

Furthermore, the stability indicator (green) shows the margin of the setting distance.

Setting distance

		Sensing object
Output (Operation indicator)				ON (Lights up)
(In case of Detection-ON)				OFF (Lights off)
Stability indicator				Lights up
	Stable operating		Stable operating
	condition		condition	Lights off
	Unstable
	operating condition

Others

•Take care that the sensor is not directly exposed to fluorescent light from a rapid-starter lamp or a high frequency lighting device, as it may affect the sensing performance.

•Do not use during the initial transient time (50 ms) after the power supply is switched on.

•This sensor is suitable for indoor use only.

•Its distance adjuster is mechanically operated. Do not drop; avoid other shocks.

•Do not use this sensor in places having excessive vapor, dust, etc., or where it may come in direct contact with water, or corrosive gas.

•Take care that the sensor does not come in direct contact with water, oil, grease or organic solvents, such as, thinner, etc.

•This sensor cannot be used in an environment containing inflammable or explosive gases.

•Never disassemble or modify the sensor.

08/2005