Keyence ES-M1, ES-M1P, ES-M2 User Manual

C2 C1 OFF

OFF

N.C. N.O.

ES-M1

SENS

ALM

OUT

10ms

C2 C1 OFF

OFF

N.C. N.O.

ES-M2

SENS

ALM

OUT

10ms

WARNING

96M1093

Separate-amplifier Proximity Sensor

ES-M1(P)/M2(P)

Instruction Manual

Read this manual before using the product in order to achieve maximum performance. Keep this manual in a safe place after reading it so that it can be used at any time.

• The ES-M1/M2 are intended for target detection. Do not use these products in a safety circuit for protecting the human body.

• The ES-M1/M2 are not explosion-proof. Do not use these products in an environment where inflammable gas, liquid or powder is present.

PART NAMES AND FUNCTIONS

ES-M1 (Main unit) ES-M2 (Expansion unit)

Sensor cable insertion port

Terminal block tightening screws

Mutual interference suppression selector switch

Operating indicator (Red) Disconnection alarm indicator (Yellow) Sensitivity adjustment trimmer

Output timer selector switch

Output delay: 10 ms Output timer OFF

Output mode selector switch

N.C. (NEAR-OFF) N.O. (NEAR-ON)

1. In N.O. operation mode: OFF-delay timer 10 ms In N.C. operation mode: ON-delay timer 10 ms

I/O CIRCUIT DIAGRAM

■ NPN

ES-M1

Main circuit

Overcurrent

protection circuit

Brown

Black

(Control output)

Orange

Blue

100mA max

Load

100mA max

Load

(Disconnection alarm output)

12 to 24 VDC

5 to 40 VDC

ES-M2

Main circuit

Expansion connector

Overcurrent

protection circuit

100mA max

Black

(Control output)

5 to 40 VDC

Load

FEATURES

■ One-line connection system

See “MOUNTING SEVERAL AMPLIFIERS” on page 2.

A wire-saving sensor system can be established by combining other one-line connection amplifiers such as the FS-V10 Series or LV Series.

■ Easy connection with the European terminal

See “SENSOR HEAD CONNECTION” on page 1.

The sensor head is connected to the amplifier through the European terminal, allowing easy and quick connection.

■ Disconnection alarm indicator & output

See “PART NAMES AND FUNCTIONS” on page 1.

The alarm indicator and output turn on when the sensor head is disconnected, enabling quick discovery of abnormal condition. (The ES-M2 features the indicator only.)

■ Mutual interference suppression function

See “MUTUAL INTERFERENCE SUPPRESSION” on page 2.

Mutual interference among several sensors that are used in close proximity can be suppressed by a simple operation.

ACCESSORIES

Instruction Manual: 1 End unit: 2 (ES-M2 only) Metal screwdriver: 1 Cautions sticker: 1 (ES-M2 only) Mounting bracket: 1 (ES-M1 only)

SENSOR HEAD CONNECTION

1. Modify the end of the sensor cable as illustrated on the right.

Outer sheath

Be sure to tightly twist the shield wire and core wire separately.

Core wire

* When the outer sheath is stripped, the shield wire appears around the core

wire. Separate the core wire and shield wire before modifying the cable.

2. Turn the terminal block tightening screws counterclockwise to loosen them.

Terminal block tightening screws

3. Insert the sensor cable straight into the insertion port of the amplifier. Make sure that the core wire and

Shield wire

shield wire are inserted into the correct ports and that the cable does not twist.

4. Turn the terminal block tightening screws clockwise to tighten them. Be sure to limit the tightening torque to

0.15 N•m.

Terminal block tightening screws

5. Turn ON the amplifier and check that the disconnection alarm indicator remains OFF. If the indicator is ON, go back to step 1 and repeat the procedure again.

Shield wire

5 ±1 mm

14 ±1 mm

Core wire

MOUNTING AMPLIFIER

■ Mounting/Detaching the amplifier to/from a DIN rail or the mounting bracket

Hook the claw located at the amplifier cable side onto the DIN rail, and then hook the front side claw to the rail while pressing the amplifier forward. To detach the amplifier, unhook the front claw by lifting the amplifier front side while pressing it forward.

Mounting Detaching

■ PNP

ES-M1P

Overcurrent

Main circuit

protection circuit

Brown

Black (Control output)

100mA max

Orange

(Disconnection alarm output)

Blue

100mA max

Load

12 to 24 VDC

ES-M2P

Overcurrent

Main circuit

protection circuit

12 to 24 VDC

100mA max

Black

(Control output)

■ Side mounting

Using the side holes of the supplied mounting bracket (ES-M1 only), fix the amplifier with screws.

M3 screw

Load

øA

HINTS ON CORRECT USE

• To extend the sensor head cable, be sure to use a high-frequency coaxial cable and limit the length between the amplifier and sensor head to 10 m or less (5 m when the EH-302/402 is used). Be sure to use an BNC connector (see the table below).

Plug BNC-P-1.5 (or equivalent products) Jack BNC-J-1.5 (or equivalent products)

• To extend the amplifier cable, use a cable with at least a 0.3 mm

nominal cross-section area. Limit the length of cable extension to no more than 100 m. (To connect several amplifiers, contact KEYENCE for further information.)

• If the amplifier cable is placed together with power lines or highvoltage lines in the same conduit, detection error may occur due to noise interference, or the sensor may be damaged. Isolate the amplifier cable from these lines.

• When using a commercially available switching regulator, ground the F.G. terminal and ground terminal.

• During maximum sensitivity setting, the detecting distance may vary due to the difference in characteristics of each unit.

• If the wiring is incorrect, the unit may heat up, or the sensitivity may fluctuate. (See “I/O CIRCUIT DIAGRAM”.)

• The EH-422, 430, 440, and 290 sensor heads cannot be connected to the ES-M1/M2. Contact KEYENCE for information on connectable amplifiers.

MOUNTING THE SENSOR HEAD

• Cylindrical type Secure the sensor head with a screw at a position 5 mm or more from the tip of the head. (Tightening torque: 0.2 N•m max.)

• For the EH-402, secure the sensor head to the metal part 15 mm or more from the tip.

• Threaded type When mounting the threaded-type sensor head, do not tighten beyond the torque specified in the following table.

Model Tightening torque

EH-108 8 N•m max. EH-110 10 N•m max. EH-114 EH-416

M3 screw (Flat point or cup point)

20 N•m max.

5 mm min.

SURROUNDING METAL

Shielded-type sensors can be flush-mounted in a metal base. Sensors of the non-shielded type, however, should be mounted according to the guidelines given below in order to minimize interference from the surrounding metal.

Distance (mm)

Model

EH-402 20 15 EH-416 30 10

NEAR-ON OPERATION

■ NEAR-ON operation

1. With the target in place, turn the trimmer clockwise and find point A at which the output indicator lights. (If the output indicator is already lit, turn the trimmer counterclockwise.)

2. With the target removed, again turn the trimmer clockwise and find point B at which the output indicator lights.

Lights when target is in place

Indicator turns off

Trimmer

Optimal position

Detecting range

Lights when there is no target

2. With the target removed, again turn the trimmer clockwise and find point B at which the output indicator lights.

3. Set the trimmer midway between points A and B. The output circuit will now actuate when the output indicator lights. The values in parentheses are the values when the mutual interference suppression function is used.

MUTUAL INTERFERENCE SUPPRESSION

• When installing two or more sensors of the same model face-to-face or in parallel, separate by the distance specified in the following table to prevent interference. The values in parentheses are for when the mutual interference suppression function is used.

Distance Face-to-face Parallel

Model

EH-302 2 (1) No space required EH-303A 2 (1) No space required EH-305(S) 5 (3) No space required EH-308(S) 10 (7) No space required EH-110(S) 7 (4) 35 (no space required) EH-114 11(6) 39 (no space required) EH-605 5 (3) 14 (no space required) EH-614A 11(6) 64 (no space required) EH-108 7 (4) No space required EH-910 26 (9) 22 (no space required) EH-402 53 (12) 23 (11) EH-416 11 (7) 115 (no space required)

(mm min.) (mm min.)

[Note] The above figures apply when the trimmer is turned to its optimal position for stable detection.

• When the mutual interference suppression function is used for three or less sensor heads, set the mutual interference suppression selector switch located on the amplifier to “OFF” for the first unit, “C1” for the second unit, “C2” for the third unit. Contact KEYENCE when four or more sensors are connected.

MOUNTING SEVERAL AMPLIFIERS

■ Mounting several units

1. Remove the protective cover.

2. Mount the amplifiers to the DIN rail one by one.

3. Slide one expansion unit toward another. Align the front claws of the amplifiers and push the amplifiers together until they click.

4. Fix the amplifiers together by pushing the end units toward each end (End units are included with the ES-M2).

■ Detaching amplifiers from DIN rail

1. Remove the end units.

2. Slide the expansion units apart and detach them individually. (Do not detach multiple amplifiers connected together with end units.)

[Notes]

• To connect several units, be sure to use a DIN rail and end units.

• To mount or detach several units, be sure to turn the power off.

• Do not remove the protective cover of the expansion connector on the outermost unit.

Align the claw.

Expansion unit

Main unit

End unit (Included with expansion unit)

3. Set the trimmer midway between points A and B. The output circuit will now actuate when the output indicator lights. The values in parentheses are the values when the mutual interfer-

Up to 16 expansion units can be connected.

ence suppression function is used.

Lights when target

■ NEAR-OFF operation

1. With the target in place, turn the trimmer clockwise and find point A at which the output indicator lights. (If the output indicator is already lit, turn the trimmer counterclockwise.)

is in place

Indicator lights

Trimmer

Optimal position

Detecting range

Turns off when there is no target

Remove the protective cover.

• The sticker shown on the right is included in the expansion unit. Apply this sticker near the sensor.

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