Panasonic SU-7 Installation Manual

Cable end

Seal

INSTRUCTION MANUAL

Slim Body Automatic Sensitivity Setting Amplifier

SU7 Series

Thank you very much for using SUNX sensors. Please read this Instruction Manual carefully and thoroughly for the correct and optimum use of this sensor. Kindly keep this manual in a convenient place for quick reference.

This product is not a safety sensor. Its use is not intended or designed to protect life and prevent body injury or property damage from dangerous parts of machinery. It is a normal object detection sensor.

				NPN output		PNP output
	Type	Standard		External synchroRemote sensitivity Remote sensitivity		Standard
		type		nization input type setting type	selection type	type

Item Model No.			SU-7		SU-75		SU-77	SU-79		SU-7P
Applicable sensor head							SH series
Supply voltage					12 to 24V DC±10% Ripple P-P: Max. 10%
Current consumption							Max. 35mA
		NPN open-collector transistor						PNP open-collector transistor
		Maximum sink current: 100mA
								Maximum source current: 100mA
		Applied voltage: 30V DC or less
Sensing output								Applied voltage: 30V DC or less
			(between sensing output and 0V)
								(between sensing output and +V)
		Residual voltage:			1.0V or less (at 100mA sink current)
								Residual voltage: 2.0V or less (at 100mA source current)
					0.4V or less (at 16mA sink current)				1.0V or less (at 16mA source current)
	Output operation		ON/OFF mode is set by the ON/OFF buttons. (Note 2)
	Short-circuit protection						Equipped
		NPN open-collector transistor						PNP open-collector transistor
		Maximum sink current: 50mA
Self-diagnosis								Maximum source current: 50mA
		Applied voltage: 30V DC or less
								Applied voltage: 30V DC or less
output			(between self-diagnosis output and 0V)					(between self-diagnosis output and +V)
		Residual voltage:			1.0V or less (at 50mA sink current)			Residual voltage: 2.0V or less (at 50mA source current)
					0.4V or less (at 16mA sink current)				1.0V or less (at 16mA source current)
	Output operation		ON in unstable sensing condition (restored after approx. 40ms) or when
			sensing output is short-circuited (restored when short-circuit is removed)
		(For SU-77, it turns ON for approx. 40ms also after the external sensitivity switching input is received.)
	Short-circuit protection
External input
External synchro-						Signal condition
nization input						High…4.5 to 30V, or open
Test input
						Low…0 to 1V
Remote sensitivity
setting input						Input impedance: 10kΩ
External sensitivity
switching input
Response time		0.6ms or less (0.8ms or less when interference prevention function is used)
Timer function						Equipped (except for SU-75)
Ambient temperature			–10 to +55˚C (No dew condensation or icing allowed), Storage: –20 to +70˚C
Ambient humidity					35 to 85% RH, Storage: 35 to 85% RH
Material		Enclosure: Heat-resistant ABS, Enclosure: Polycarbonate, Lock lever: PPS
Accessories			MS-DIN-2 (Amplifier mounting bracket): 1 No., SU-CT1 (Stripper): 1 No.

Notes: 1) The plug-in connector type of SU-7 has suffix ‘J’ at the end of the model No. Model No.: SU-7J

Except for the connector portion, its specifications are the same as for SU-7. 2) For SU-77, it can also be set by the remote sensitivity setting input.

Make sure to carry out the wiring in the power supply off condition.

Verify that the supply voltage variation is within the rating.

If power is supplied from a commercial switching regulator, ensure that the frame ground (F.G.) terminal of the power supply is connected to an actual ground.

In case noise generating equipment (switching regulator, inverter motor, etc.) is used in the vicinity of this product, connect the frame ground (F.G.) terminal of the equipment to an actual ground.

Do not use during the initial transient time (0.5 sec.) after the power supply is switched on.

The self-diagnosis output is not incorporated with a short-circuit protection circuit. Do not connect it directly to a power supply or a capacitive load.

Do not run the wires together with high-voltage lines or power lines or put them in the same raceway. This can cause malfunction due to induction.

Extension up to total 100m is possible with 0.3mm2, or more, cable.

Avoid dust, dirt, and steam.

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

CUTTING CABLE

Insert the cable into a hole provided for	Holes for
cutting in SU-CT1, and press the blade	cutting
down.
Note: Do not stop the blade halfway. Press it up to	Inlet for
the bottom in one stroke.	stripping

STRIPPING CABLE

Press the blade downwards and stop it at the middle of the stroke.

Top position

Middle position

There is a stopping feel at the position shown by the arrow.

	Insert the cable into	one	of	the inlets	Bottom view of SU-CT1
	provided for stripping	at	the	center of
					Stopper	Cable
	SU-CT1.
	Note: The cable must be inserted till it touches the					Insert till
	stopper.
						the end.

Press the blade fully down.

Note: Do not tilt the blade when pressing.

With the blade still pressed, rotate SU-CT1 about a half-turn.

With the blade still pressed, withdraw SU-CT1 from the cable. Only the insulation is stripped.

Notes: 1) Strip the cables one by one.

2) The blade of SU-CT1 is not replaceable.

How to mount the amplifier

Mount the rear part of the amplifier on the attached amplifier mounting bracket (MS-DIN-2) or a 35mm width DIN rail.

Press down the front part on the amplifier mounting bracket or the 35mm width DIN rail to fit it.

How to remove the amplifier

Hold the amplifier and push it forward. Lift up the front part to remove the amplifier.

Sensor head connection

Open the case cover.

Process the cable end as shown on the right.

Attached amplifier mounting bracket of 35mm width DIN rail.

Case cover

Note: Do not remove the lead wire insulation.

	Bring down the cable lock lever.				5 to 9mm
	Insert		the cables into the cable Shield wire		Lead wire
	inlets.			Cable wire
	‘	’	Receiver: Black cable		5 to 9mm
	‘	’	Emitter: Gray cable		Lead wire

Notes: 1) Both the shield wires must be separately twisted and placed facing each other on the inside. Both inlets form symmetrical irregular ovals that include the supplementary holes facing each other. Insert the cables such that the shield wires pass through the supplementary holes. If the shield wires pass through a part other than the supplementary holes, misconnection will occur.

2)Place the shield wires facing each other, and insert the cables straight, without bending, till the end.

Pull up the cable lock lever to lock. Put on the case cover.

Gray	Black
	Cable
	inlets

Black

Gray

Case cover

Notes: 1) If the cables are removed after releasing the lock lever, the same cables can be connected to the amplifier, once more, as they are. But for the third time, start from Step 2. If cable lock and release operation is repeated, the lead wire may get cut causing a connection failure.

2)If the cable end is left in the insertion hole, insert the cable after removing the cable end left inside.

For removing the cable end, turn the sensor over and tap around the cable

insertion holes. If this does not work,

peel off the seal at the back of the

Seal

amplifier and take out the cable end. (The seal can be stuck again.)

	I/O Circuit Diagram
[NPN output type]				Color of lead wires
		D		(Brown) +V
	5V			(Pink) Input 1 (Note)
circuit	5V			(Violet) Input 2 (Note)	Load		+	12 to 24V DC
Sensor
			100mA
		ZD1		(Black) Sensing output		Load	–	±10%
			max.
	ZD2	Tr1 50mA		(Orange) Self-diagnosis
			max.	output
	Tr2			(Blue) 0V
						If a disable switch is provided here,
Sensor internal circuit				Users’ circuit		it prevents wrong setting.
[PNP output type]
			D	(Brown) +V
	Tr3			(Black) Sensing output			100mA
			Tr4				max.
circuit		ZD1		(Orange) Self-diagnosis output		50mA
		ZD2				Load
						max.
Sensor							+	12 to 24V DC
					Load		–	±10%
				(Blue) 0V
Sensor internal circuit				Users’ circuit

Symbols... D : Reverse supply polarity protection diode

ZD1, ZD2 : Surge absorption zener diode

Tr1, Tr2 : NPN output transistor

Tr3, Tr4 : PNP output transistor

Note: The name of input wires differs depending on the model No.

Model No.

SU-7

SU-75

SU-77

SU-79

Input

SU-7P

Input 1

External synchronization

Remote sensitivity

External sensitivity

input (ES)

setting input (R. ON)

switching Input 1 (S1)

Input 2

Test input (CONT.)

Remote sensitivity

External sensitivity

setting input (R. OFF)

switching Input 2 (S2)

RUN

SIF SET SU-79 OND

OFD TIMER

ON

OFF

STB

OUT

Mode selection switch

Operation

indicator (Red)

Stable operation

indicator (Green)

Timer adjuster (Note)

ON button

Sensitivity setting buttons OFF button

Note: It is the remote synchronization selection switch for SU-75.

Normally, set the sensitivity as per Standard Setting .

If the sensing is unstable, set as per limit, shift or full power setting.

With	Received light intensity	The operation level is
workpiece
	ON input	set	approximately
	Large	halfway between the
Standard setting	Operation level
Without		light	intensity recei-
workpiece	OFF input	ved for ON input and
	Small	OFF input.

The optimum sensitivity is set with one press of the button (or Limit setting with one Low input). The sensitivity can be set without

sensing a workpiece.

If the received light intensity fluctuates either in the workpiece Shift setting present or absent state, shift the operation level towards the

stable light intensity state.

The MAX. sensitivity is set.

Full power setting Note: In case of reflective type sensor, if a background is present, the sensor may become ON even without a workpiece.

Standard Setting (Automatic sensitivity setting function) In case the sensing output is ON when object is detected.

Setting procedure

Step	Operation
Place sensor head within the sensing range. (Note1)
Set mode selection switch to	“SET”.		RUN
			SIF
			SET

Press ON button with the sensing object present. (Release it within 3s.)

Thru-beam	Reflective		OFF
		ON
	Mark
Light is interrupted	Base

When ON state is recognized by the sensor,	STB
stable operation indicator (green) will flash.	OUT

Press OFF button with the sensing object absent. (Release it within 3s.)

Thru-beam	Reflective		OFF
		ON
	Mark
Light is received	Base

The stable operation indicator will flash twice if the sensitivity difference (received light intensity difference) between ON state and OFF state is sufficient and a stable detection is possible.

Stable operation indicator will flash continuously if stable detection is not possible. (Note 2)

Set mode selection switch to “RUN”.		RUN
Now, the sensitivity setting buttons are ineffective.		SIF
		SET

So, even if the buttons are pressed by mistake, the registered sensitivity will remain unchanged.

In case the sensing output is ON when object is not detected.

In the above procedure

Press ON button with the sensing object absent. Press OFF button with the sensing object present.

Notes: 1) As the sensing range will differ according to the type of sensor head, refer to the catalog. The sensing range for the reflective type sensor head is the figure for white non-glossy paper. The actual sensing range will differ according to the sensing object's color, surface condition, etc.

Notes: 2) The sensitivity can be registered in the sensor even if the sensing condition is not stable.

Setting by remote sensitivity setting input (For SU-77 only)

Instead of pressing buttons, the sensitivity can be set with the remote sensitivity setting input.

(Shift setting cannot be done with remote sensitivity setting input.)

Setting procedure

The procedure is the same as for setting with the sensitivity setting buttons, except that instead of pressing the buttons, the remote sensitivity setting input wire is short-circuited to 0V. The mode selection switch is set to either the “SET” or “RUN” side.

			Orange (Self-diagnosis output)
			Black (Sensing output)
		OFF	Brown (+V)
	ON		Blue (0V)
		Pink	R. ON
		Violet	R. OFF
			Orange (Self-diagnosis output)
		OFF	Black (Sensing output)
			Brown (+V)
	ON		Blue (0V)

Pink R. ON

Violet R. OFF

Time chart

The self-diagnosis output stays ON for approx. 40ms after ON input or OFF input is recognized by the sensor.

If the difference between the ON and OFF levels (the difference between incident light levels) is so small that stable detection is not possible, it does not turn ON.

Power supply

ON

OFF

Remote sensitivity

High

ON input (R. ON)

Low

T1

T2

Remote sensitivity

High

OFF input (R.OFF)

Low

T5

T2

Self-diagnosis

ON

T3 (Note 2)

T3 (Note 2)

output (Note2)

OFF

T4

T4

Sensing output

Sensing ready

T1 1,000ms, 3,000ms T2 5ms, T3 310ms, T4 40ms, T5 500ms

Notes: 1) Signal condition ... Low: 0 to 1V, High: 4.5 to 30V, or open Input impedance: 10kΩ

Notes: 2) Do not move the workpiece, etc., or change the received light intensity during T3.