KEYENCE SK-1000 User Manual

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Inline Static Sensor

Important

Point

Reference

96M13428

SK-1000 Series

Instruction Manual

Read this instruction manual before using the product in order to achieve maximum performance. Keep this manual in a safe place after reading it for future reference.

Introduction

This manual describes the operations of and information related to the SK-1000 Series. Read this manual carefully to ensure the safe performance and function of the SK-1000 Series. Keep this manual in a safe place for future reference. Ensure that the end user of this product receives this manual.

 Symbols

The following symbols are used in this instruction manual to enable you to recognize important information at a glance. Be sure to read this section carefully.

Indicates a hazardous situation which, if not avoided, will result in

DANGER

death or serious injury.

Indicates a hazardous situation which, if not avoided, could result

WARNING

in death or serious injury.

Indicates a hazardous situation which, if not avoided, could result

CAUTION

in minor or moderate injury.

Indicates a situation which, if not avoided, could result in product

NOTICE

damage as well as property damage.

Table of Contents

Introduction ...................................................................................... 1

Safety Precautions ........................................................................................ 2

General Precautions .........................................................................2

Safety Information for the SK-1000 series ........................................ 2

Abnormal Conditions ........................................................................ 2

Precautions for Use ..........................................................................2

Other Precautions .............................................................................2

Precautions for Regulations and Standards ..................................................2

1. Before Use ................................................................................................ 3

Checking the Package Contents ...................................................... 3

Part Names and Functions ...............................................................3

2. Installation and Connection .......................................................................4

Mounting and Wiring the Sensor Amplifier ....................................... 4

Connecting and Mounting the Sensor Head ....................................5

3. Basic Operations ....................................................................................... 7

Operation When the Power is Turned on for the First Time ..............7

Operations on the Main Screens ...................................................... 7

Initial Reset (Initialize) ....................................................................... 8

Setting the Tolerance Values ............................................................ 9

Zero Shift Function

(Shifting the Internal Measurement Value (R.V.)) ............................. 9

Bank Function (Registering Multiple Tolerance Setting Values) ...... 9

Key Lock Function 10

4. Setting Various Functions ....................................................................... 10

Basic Settings and Advanced Settings .......................................... 10

Simulation Mode ............................................................................. 17

5. Specifications .......................................................................................... 17

Specifications ................................................................................. 17

Circuit Diagram .............................................................................. 18

Dimensions ..................................................................................... 18

Response Time ............................................................................... 19

Indicates cautions and limitations that must be followed during operation.

Indicates additional information on proper operation.

Indicates tips for better understanding or useful information.

Indicates the reference pages in this manual or the reference pages in separate manuals.

6. Appendix .................................................................................................19

Troubleshooting .............................................................................. 19

Display Screen and Output ............................................................ 21

Factory Setting (Default Value) List ................................................ 21

E SK-1000 IM

Safety Precautions

NOTICE

General Precautions

• At startup and during operation, be sure to monitor the functions and performance of this product and confirm normal operation.

• We recommend that you take substantial safety measures to avoid any damage in the event that a problem occurs.

• If the product is modified or used in any way other than those described in the specifications, its functions and performance cannot be guaranteed.

• When this product is used in combination with other devices, the functions and performance may be weakened, depending on the operating conditions, surrounding environment, etc.

• Do not use this product for the purpose of protecting the human body.

• Do not subject this device, including peripheral devices, to rapid temperature

change. Product failure may occur due to condensation.

Safety Information for the SK-1000 series

• This product is only intended to detect the charge on object(s). Do not use this product for the purpose to protect a human body or a part of human body.

WARNING

• This product is not intended for use as explosion-proof product. Do not use this product in hazardous location and/or potentially explosive atmosphere.

Warming up

Leave the SK Series about 30 minutes after turning on the power. The circuit is not stable immediately after the power turns on, so the display value may gradually fluctuate.

Abnormal Conditions

If the following conditions occur, turn OFF the power immediately. Continuing to use this product under abnormal conditions may cause product failure.

NOTICE

• When water or foreign matter enters the SK Series

• When the SK Series is dropped or the case is damaged

• If smoke or unpleasant odor is present.

Precautions for Use

• Use with the correct power source and voltage. Otherwise, fire, electric shock or product failure may result.

CAUTION

• Do not attempt to open or modify the SK Series. Doing so may cause fire or electric shock.

• Before disconnecting the cables, make sure to turn off the main unit and devices connected to the main unit. Otherwise, the unit may be damaged.

• Do not turn off the power while modifying settings. Some or all of the setting data may be lost.

• The measurement area is basically a guide for measurement. A proper size of target with respect to the measurement area is recommended to ensure a more accurate measurement.

Power ON Reset

After the power is turned ON, it will take approx. 3.5 seconds for the measurement to start. The judgment results will be output after the sampling rate has elapsed.

Other Precautions

Power source

• Noise superimposed on the power supply may cause malfunction. Use a direct current stabilized power source which uses an insulation transformer.

• When using a commercially available switching regulator, make sure to ground the frame ground terminal.

 Grounding precautions

A grounding wire is present in the I/O cable of the SK-1000 Series.

• For proper measurements, be sure to connect the blue wire protruding from the SK-1000 Series to ground.

• Use class-D grounding-resistance not exceeding 100 Ω.

Precautions for Regulations and Standards

 CE Marking

Keyence corporation has confirmed that this product complies with the essential requirements of the applicable EC Directives, based on the following specifications. Be sure to consider the following specifications when using this product in the Member States of European Union.

z EMC Directive

• Applicable standards EN61326-1, ClassA

• This product is intended to be used in an industrial electromagnetic

environment.

Remarks These specifications do not give any guarantee that the end-product with this product incorporated complies with the essential requirements of EMC Directive. The manufacturer of the end-product is solely responsible for the compliance on the end-product itself according to EMC Directive.

 FCC regulations

This product complies with the following EMI regulations specified by the FCC.

• Applicable standards FCC part 15 subpart B, class A digital device

 IC (Industry Canada) regulations

This product complies with the following EMI regulations specified by IC.

• Applicable standards ICES-003, class A digital apparatus

Installation environment

To use this product normally and safely, do not install this product in the following locations. Product failure may occur.

• High-humidity, dusty or poorly-ventilated locations

• High-temperature locations where the unit is exposed to direct sunlight

• Locations where there is corrosive or combustible gas

• Locations where the unit may be directly subjected to vibration or impact

• Locations where water, oil or chemicals may splash onto the unit

• Locations that cause the unit to discharge its static electricity

Influence of dirt

Measurement errors may occur due to dust, water, oil, etc.

Anti-noise prevention

When the unit is installed near electric noise source such as a power source or high-voltage line, operational errors or product failure may occur. Take adequate measures such as using a noise filter, separating cables or insulating the sensor amplifier and the sensor head.

E SK-1000 IM

1. Before Use

Sensor amplifier x 1 Instruction manual x 1

SK-1000 (main unit)

Sensor amplifier x 1

SK-1050 (expansion unit)

Sensor head x 1

SK-050

OP-26751 (for SK-1000/1050)

End unit x 2

OP-87056 (2 m) OP-87057 (5 m) OP-87058 (10 m) OP87059 (20 m)

Sensor head connection cable (M8 straight connector) x 1

OP-87660 (2 m) OP-87661 (5 m) OP-87662 (10 m) OP87663 (20 m)

Sensor head connection cable (M8 L-shaped connector) x 1

OP-84338

Sensor head cable connector x 2

OP-87934

Ion balance monitor unit

Expansion unit connecto

r*1

Sensor head connector

Amplifier control unit cover

Expansion unit connector

Amplifier control unit

(1)

(2)

(3)

(4)

(5) (6) (7) (8)

(9) (10) (11)

(12)

(13)(14)(15)

Part Names and Functions

This chapter gives an overview of the SK Series as well as the name and function of each part.

Checking the Package Contents

The following equipment and accessories are included in the package. Before using the unit, make sure that all items are included.

Sensor Amplifier

 DIN rail mount type

Sensor Head

Sensor Amplifier Unit

 SK-1000

HOLD

ZERO SHIFT

BANK

1 2 3

TEMP %RH

HI LO R.V.

ZERO SHIFT

TIMING

SELECT

SET MODE

SK-1000

ALARM

*1 When shipped from the factory, a protective cover is installed over the

expansion slots.

*2 Not installed on the main unit.

 Amplifier control unit

ALARM

HOLD

ZERO SHIFT

BANK

1 2 3

TEMP %RH

HI LO R.V.

ZERO SHIFT

TIMING

SET MODE

SELECT

SK-1000

List of Optional Parts

 Forsensoramplifier

 Forsensorhead

Item Description

(1) Main display Displays the judgment value (P.V.) and each setting item.

(2) HOLD indicator

(3) Judgment indicator

(4) Bank indicator

Lights up when the judgment value (P.V.) is held. "6. Hold Function" (page 12)

Displays whether the judgment val ue (P.V.) is HI (over the upper limit), GO (within the acceptable range) or LO (below the lower limit) against the tolerance setting value. "Changing the Tolerance Values" (page 9)

Displays a bank in use. "Bank Function (Registering Multiple Tolerance Setting Values)" (page 9)

(5) Zero shift button

(6) Sub display indicator

(7) Sub display

(8) Timing input indicator

(9) Zero shift indicator

Press this button to match the internal measurement value (R.V.) to zero.

Lights up according to the type of values displayed on the sub display.

Displays the internal measurement value (R.V.), temperature, humidity, and each setting (selection) item.

Lights up while the timing input is ON when the timing input (external input) is set to Level. Lights on approx. 0.5 sec. when the timing input is set to Edge and the timing input is turned ON.

The zero shift indicator will light up for approx. 0.5 second when the zero shift function is used.

(10) SET button Used to perform initializations.

(11) MODE button

(12) Arrow button

Used when setting items, entering/exiting setting modes or moving items.

Used when selecting settings, changing display contents on the sub display, etc.

(13) Alarm indicator Lights up in the alarm state or error state.

kV display unit

(14)

(15)

indicator

V display unit indicator

Lights up when the judgment value (P.V.) display unit is kV.

Lights up when the judgment value (P.V.) display unit is V.

E SK-1000 IM

Sensor Head Unit

(3) Temperature/humidity sensor

(2) Surface potential sensor

(1) Sensor indicator light

NOTICE

①

②

③

Main unit

Connector cover

Main unit

Expansion unit

Connector

2. Installation and Connection

 SK-050

Item Description

Lights up according to the judgment during normal operation.

(1) Sensor indicator light

Surface potential

(2)

sensor

Temperature/humidity

(3)

sensor

HI/LO: Lit in red GO: Lit in green OFF: Off When an error occurs: Lit in red

This sensor detects the charge potential.

This sensor detects the temperature/humidity.

This chapter describes precautions when installing and connecting the SK Series.

Mounting and Wiring the Sensor Amplifier

Mounting the Sensor Amplifier

 SK-1000

1 Align the tab at the bottom of the amplifier body with the DIN rail.

While pushing the amplifier in the direction of the arrow (1), push down in the direction of the arrow (2).

2 To dismount the sensor, raise the main body in the direction of the

arrow (3) while pushing the main body in the direction of the arrow (1).

 Expansion unit (SK-1050)

Incorporate multiple units into one system by connecting expansion units to the main unit. Up to 7 expansion units can be connected to one main unit.

• Always mount expansion units onto a DIN rail.

• When connecting multiple amplifiers (expansion units), first

check to make sure that the power is turned OFF to all of the main and expansion units. Connecting the units with the power turned ON may cause damage to the units.

• Position the amplifiers (expansion units) as close as possible to the main unit. Improper connections may damage the equipment.

Point

• When connecting the expansion units, make sure to initialize the connected expansion units and set the output polarity.

(1)Turning on the amplifier for the first time after connecting the

sensor head

"Operation When the Power is Turned on for the First Time" (page 7) (2)Performing the initial reset

"Initial Reset (Initialize)" (page 8)

• Expansion units with different setting of output polarity (such as

an NPN output expansion unit and a PNP output main unit) cannot be connected together.

1 Remove the expansion protective cover from the SK-1000 (main unit)

2 Install the amplifiers (expansion units) on the DIN rail.

For details on how to install the unit, see the above explanation for the SK-1000.

3 Push the expansion unit into the main unit connector until a clicking

sound can be heard.

The expansion unit installed next to the main unit is referred to as expansion unit 1. Subsequent expansion units are referred to as expansion unit 2, expansion unit 3, etc.

E SK-1000 IM

4 Install the end units (OP-26751: 2 units in a set, optional accessory)

Point

End unit

HOLD

ALARM

BANK

SET MODE

SELECT

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

Brown

Blue

Black

White

Gray

Light blue

Orange

Shield

Pink

Yellow

Pink/Purple

Purple

Green

10 to 30 VDC

0 V, grounding wire HI judgment output

LO judgment output GO judgment output

Analog output (surface potential) Analog output GND

Zero shift input

Reset input

Timing input

Bank A Input

Alarm output

WARNING

NOTICE

Mounting holes

Sensor unit

Tightening torque:

1.2 Nm (12kgf•cm) or less

50 mm

60 mm 100 mm 120 mm

25 mm

12 mm

5 mm

φ 200

φ 250

φ 500

φ 620

φ 80

φ 30

φ12

High-precision mode: 25 mm

Wide-range mode: 100 mm

Tightening torque:

1.2 Nm (12kgf•cm) or less

on both sides of the amplifiers (main and expansion units). Secure the end units in place with screws on top (2 on each end unit).

The end units are mounted in the same way as the amplifiers.

Fix the amplifiers securely using the end units (OP-26751: 2 units in a set, optional accessory) or a commercially available DIN rail fixing tool to prevent the amplifiers from moving on the DIN rail or coming off of the DIN rail due to machine vibration.

 Power/Input-output cable

z "Output Circuit Diagram" (page 18)

Connecting and Mounting the Sensor Head

Mounting the Sensor Head

Attach the sensor head using the dedicated mounting bracket. When you attach the sensor head, be careful not to touch the aperture. Doing so may lead to malfunctions.

Install the sensor unit (including its metal parts) so that nothing touches it during measurement. Failing to do so not only prevents proper measurements of static electricity but may also lead to electric shock and product breakdown.

Do not cover the area around the temperature/humidity sensing unit. Doing so will prevent you from correctly measuring the ambient temperature/humidity.

 Measurement area

The following figures briefly show the measurement area of the SK-050. The measured value is the average of the values detected within the measurement area as seen in the figures.

*1 The SK-1050 (expansion unit) does not have brown, blue, or light blue wires.

Power is supplied to the expansion unit through the SK-1000 (main unit). Use D-class grounding to ground the blue wire.

*2 The analog output (surface potential) specifications change according to the

measurement range. The analog output can be set to one of the following values when the power is first turned on and when initializations are performed. None (OFF), -5 to 5 V, 0 to 5 V, 1 to 5 V, or 4 to 20 mA

" Operation When the Power is Turned on for the First Time" (page 7) " Initial Reset (Initialize)" (page 8)

*3 In addition to the above values, you can select from the following options for

external input. Bank B input or do not use (OFF)

" 10. External input" (page 15)

*4 When you expand the system to 6 or more units, use a power supply voltage

of 20 to 30 V.

• This device's 0 V power supply wire, analog output GND wire, and grounding wire are all shared. Ensure that an electric potential difference does not occur between their terminals due to wiring or due to electric potential differences between

NOTICE

external devices. Failing to do so may lead to accidents or breakdowns involving the external devices and this product.

• Use power supplies that are isolated from each other or so that negative grounding is present between them. You cannot use positive grounding.

 Measurement distance

The SK-050 provides a high-precision mode and a wide-range mode. Each mode offers different measurement distances between the sensor head and the target. The figure below shows the reference distance for measurements in each measurement mode. The reference plane is the bottom surface of the sensor head.

 Attaching the ion balance monitor unit (OP-87934)

Fix with screws using the mounting holes in the sensor's main body and those of the ion balance plate.

E SK-1000 IM

Reference

Point

Be sure to fasten screws from the ion balance plate side. If

(1) Align the arrow position of the connector to

insert.

(2) Rotate the connector screw to tighten.

Click

Lock cover

Unlocked

Lock cover

Unlocked

Lock lever

Blue

White

Black

Brown

Insert the wires beyond this point

fastened from the main body side, the ion balance plate can

NOTICE

contact other parts, resulting in incorrect measurement.

The ion balance plate can be mounted from either side of the sensor head.

Connection and Wiring

 Connecting the sensor head and amplifier

1 Attach the sensor head connection cables to the sensor head cable

Tighten the connectors securely by hand.

2 Attach the sensor head connection cable to the amplifier connector.

Remove the lock cover of the connector and insert it into the connectors of amplifier until a clicking sound is heard.

 Attaching the sensor head cable connector (OP-84338:

optional accessory)

Cut the sensor head connection cable to the required length and attach the new connector to use the sensor.

1 Cut the cable to the required length and strip approx. 15 mm of

insulation from the end of the cable.

Point

Do not strip the core wire insulation.

2 Insert the wires into the connector holes of the matching color.

The cables should be inserted to the end and held in place.

3 Attach the lock cover to the connector to secure the cable.

When removing the sensor head connection cable, push in the lock lever and pull it out.

3 Confirm that all wires are inserted to the specified position and

crimp them using pliers or a similar tool.

Point

After the connector is changed, connect it to the amplifier and confirm normal operation. If it does not operate normally, crimp the connector again with pliers. Once the connector is crimped, it cannot be reused.

E SK-1000 IM

3. Basic Operations

Point

Power ON

PRP

LASER

BANK

0 1 2 3

R.V.

ANALOG

HI SHIFT

ZERO SHIFT

TIMING

ALIGNMENT

QWV

HOLD CALC

CHECK

Output polarity

Setting value

Description

npn

NPN output

pnp

PNP output

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

Analog output

Setting value

Description

off

Not output

0-5u

Analog output after the judgment value (P.V.) is converted to the range from 0 to 5 V.

-5-5u

Analog output after the judgment value (P.V.) is converted to the range from -5 to 5 V.

1-5u

Analog output after the judgment value (P.V.) is converted to the range from 1 to 5 V.

aMpr

Analog output after the judgment value (P.V.) is converted to the range from 4 to 20 mA.

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

R.V.

［

R.V.

］

［HI］

HI side setting value

LO side setting value

［LO］

TEMP][％RH]

［

TEMP

］

Temperature

Temperature/Humidity

Humidity

［％RH］

(1) Temperature/humidity display screen (6) R.V. display screen

(2) Temperature display screen (5) LO side setting value screen

(3) Humidity display screen (4) HI side setting value screen

Operations on the Main Screens

This chapter describes basic operations and settings for the SK Series.

Operation When the Power is Turned on for the First Time

When the amplifier is turned on for the first time after the sensor head is connected, the initial setting screen appears after a few seconds. Adjust the initial settings according to the following procedure. The initial setting is necessary for both the main unit and the expansion units when they are added.

Once the initial setting is completed, the initial setting display will not appear when the power is turned on the second time or thereafter. To change these settings, perform an initial reset.

"Initial Reset (Initialize)" (page 8)

1 Press S / T button to select the polarity of

judgment output and alarm output, and then press [MODE] button.

[MODE] button

2 Press S / T button to select the type of

analog output and press [MODE] button. (For SK-1000 only)

R.V. (Internal Measurement Value) and P.V. (Judgment Value)

This section describes R.V. (Internal Measurement Value) displayed on the sub display (lower level) and P.V. (Judgment Value) displayed on the main display (upper level).

R.V. (Internal Measurement Value)

R.V. (Internal Measurement Value) is the value displayed when a target is inserted into the measurement range. Only the charge potential can be displayed. * R.V. = Raw Value

P.V. (Judgment Value)

P.V. (Judgment Value) is the value to set the judgment output to ON/OFF according to the tolerance setting value. Also, the analog output is output based on the P.V.. Only the charge potential can be displayed. * P.V. = Present Value

"Changing the Tolerance Values" (page 9) The Judgment value (P.V.) and the Internal Measurement Value (R.V.) are typically the same value. However, when the hold function, step-count filter, or the calculation function is used, they will become different values.

"6. Hold Function" (page 12) * The R.V. and P.V. cannot be displayed for the temperature and humidity.

Main Display (Upper Level)

The judgment value (P.V.) is shown on the main display. The display varies according to the functions used such as Normal, Hold function, and the Calculation function.

ALARM

HOLD

BANK

1 2 3

TEMP %RH

HI LO R.V.

[HOLD] ON

HOLD

BANK

1 2 3

TEMP %RH

HI LO R.V.

Normal

The same value as the internal measurement value (R.V.) is displayed as a judgment value (P.V.).

ZERO SHIFT

TIMING

When the hold function is used

ALARM

The judgment value (P.V.) is held according to the hold function settings.

ZERO SHIFT

"6. Hold Function" (page 12)

TIMING

Sub Display (Lower Level)

[MODE] button

3 After the setting is complete, [end] blinks

several times on the sub display and the main screen appears.

4 Change other settings as necessary.

The sub display can be switched with the arrow buttons W / X Depending on the type of displayed value, the sub display indicator [R.V. / TEMP / %RH / HI / LO] lights up.

(1) Temperature/humidity display screen

The temperature and humidity detected by the sensor head are displayed.

(2) Temperature display screen

The temperature detected by the sensor head is displayed.

(3) Humidity display screen

The humidity detected by the sensor head is displayed.

(4) HI side setting value screen

The upper limit of the acceptable range (tolerance setting value) for the target is displayed. This setting value can be changed. If the judgment value (P.V.) exceeds the value set here, the HI judgment output turns on.

"Changing the Tolerance Values" (page 9)

E SK-1000 IM

(5) LO side setting value screen

HOLD

ALARM

BANK

SET MODE

SELECT

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

SK-1000

Buttons used

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

PRP

LASER

BANK

0 1 2 3

R.V.

ANALOG

HI SHIFT

ZERO SHIFT

TIMING

ALIGNMENT

QWV

HOLD CALC

CHECK

Output polarity

Setting value

Description

npn

NPN output

pnp

PNP output

Setting value

Description

off

Not output

0-5u

Analog output after the judgment value (P.V.) is converted to the range from 0 to 5 V.

-5-5u

Analog output after the judgment value (P.V.) is converted to the range from -5 to 5 V.

1-5u

Analog output after the judgment value (P.V.) is converted to the range from 1 to 5 V.

aMpr

Analog output after the judgment value (P.V.) is converted to the range from 4 to 20 mA.

The lower limit of the acceptable range (tolerance setting value) for the target is displayed. This setting value can be changed. If the judgment value (P.V.) falls below the value set here, the LO judgment output turns on.

"Changing the Tolerance Values" (page 9)

(6) R.V. display screen

The internal measurement value (R.V.) is displayed. The displayed value is not held even if a hold function is enabled.

Setting Operations

This section explains the functions of the main screen and the functions of each setting screen.

 Functions Operable on the Main Screen

Main screen

Press W or X button.

Switching the sub display (lower level; page

The internal measurement value (R.V.), HI side setting value, LO side setting value, temperature and humidity, temperature, or humidity is displayed, and the settings can be changed.

"Changing the Tolerance Values" (page 9)

Set the HI side tolerance setting value and the LO side tolerance setting value. The value is judged as HI, GO, or LO and is displayed and output.

While pressing down [MODE], press S or T button.

"Bank Function (Registering Multiple Tolerance Setting Values)" (page 9)

The HI side setting value, LO side setting value, and shift target value can be saved in up to four different banks, and the bank can be switched.

Press [MODE] and S buttons for approx. 2 seconds.

"Key Lock Function" (page 10)

This function prevents unwanted button operations during measurement.

 Available Functions from the Main Screen

Main screen

Press [MODE] button for approx. 2 seconds.

"Basic Settings and Advanced Settings" (page 10)

Basic settings

Configure basic settings such as the measurement mode and the averaging rate.

Advanced settings

Configure more advanced settings such as the hold function and the timing input in order to use the unit in a wider range of applications.

While pressing the [MODE] button, press the [SET] button 5 times.

"Initial Reset (Initialize)" (page 8)

All settings, excluding the calibration function, are initialized.

[While pressing the [MODE] button, press the W button 5 times.

"Simulation Mode" (page 17)

You can use this function to check that the I/O

E SK-1000 IM

wires for control have been wired correctly.

Initial Reset (Initialize)

When an initial reset is performed, all settings, excluding the calibration function, are initialized. The judgment output's polarity and analog output setting can also be changed through the same operation.

Main screen

ALARM

HOLD

BANK

1 2 3

ZERO SHIFT

TEMP %RH

HI LO R.V.

While pressing the [MODE] button, press the [SET] button 5 times.

HOLD

BANK

1 2 3

ZERO SHIFT

TEMP %RH

HI LO R.V.

Performing the initial reset

[MODE] button

TIMING

1 While pressing the [MODE] button on the

main screen, press the [SET] button 5 times.

[reset] is displayed on the main display (upper level).

ALARM

2 Press S / T button to select [yes] and press

the [MODE] button.

If [no] is selected at this point, only the output polarity and analog output settings can be changed without performing the initial reset.

3 Press S / T button to select the output

polarity and press the [MODE] button.

[MODE] button

ALARM

HOLD

BANK

1 2 3

ZERO SHIFT

TEMP %RH

TIMING

HI LO R.V.

Analog output

[MODE]button

HOLD

BANK

1 2 3

ZERO SHIFT

TEMP %RH

TIMING

HI LO R.V.

• When buttons other than the S/T button and [MODE] button are

Reference

pressed during the initial reset procedure, the initial reset is canceled and the screen in step 2 is restored.

• When you attempt to initialize the unit while the key lock function is set, the screen shown on the right appears and the initialization fails. Cancel the key lock before attempting to initialize the unit.

4 Press S / T button to select the analog

output and press the [MODE] button. (For SK-1000 only)

"9. Analog output scaling" (page 14)

ALARM

5 After the initialization is complete, [end] blinks

several times on the sub display and the main screen is restored.

"Key Lock Function" (page 10)

HOLD

BANK

0 1 2 3

TEMP %RH

HI LO R.V.

ALARM

ZERO SHIFT

TIMING

Changing the Tolerance Values

Reference

Judgment indicator

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

[LO]

HI side setting value

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

The tolerance values consist of the upper limit value (HI side setting value) and the lower limit value (LO side setting value). By setting these values, judgments are made in three levels: when the judgment value (P.V.) goes beyond the upper limit (HI judgment), when the judgment goes beyond the lower limit (LO judgment) and when the judgment is within the acceptable range (GO judgment). Subsequently, the corresponding indicator and judgment output will be turned ON/OFF.

Judgme nt

Judgment output

HI GO LO HI GO LO

Judgment indicator

HI ON OFF OFF Red OFF OFF

GO OFF ON OFF OFF Green OFF

LO OFF OFF ON OFF OFF Red

Error

ON OFF ON Red OFF Red

*1 When the state of judgment output is Normally Open (default value) ON/OFF

is reversed when the state is Normally Closed. *2 "3. Output state" (page 11) *3 "Error Displays and Corrective Actions" (page 20)

HOLD

ZERO SHIFT

BANK

1 2 3

TEMP %RH

HI LO R.V.

ZERO SHIFT

TIMING

SELECT

SET MODE

SK-1000

ALARM

When the setting "HI side setting value < LO side setting value" is chosen, the judgment output is as follows.

• GO judgment output is not output regardless of the judgment value (P.V.). (When "HI side setting value = LO side setting value = judgment value (P.V.)" and hysteresis = 0.000, the GO judgment output is turned on.)

• When the judgment value (P.V.) simultaneously exceeds the HI side setting value and falls below the LO side setting value, the HI judgment output and LO judgment output are output at the same time.

Setting the tolerance

Zero Shift Function (Shifting the Internal Measurement Value (R.V.))

The internal measurement value (R.V.) is shifted (offset) to zero. The judgment value (P.V.) is shifted (offset) as well. The following two methods can be used.

• Press the [ZERO SHIFT] button (<1 second).

• Set the external input (zero shift input) to ON for 20 ms or more.*

* When the zero shift input is set for the external input 1 (pink wire), the zero shift

is enabled when the input is triggered.

"10. External input" (page 15)

Enabling the Zero Shift

When the following operation is performed on the main screen, the zero shift indicator [ZERO SHIFT] lights up for approx. 0.5 second and the current internal measurement value (R.V.) shifts to zero.

• Press the zero shift button [ZERO SHIFT] (<1 second).

• Turn ON the zero shift input of external input for 20 ms or more.

Point

• If the power is turned OFF after a zero shift is performed by external input, the previous state before the zero shift function is restored. If you wish to keep the shifted state of the internal measurement value (R.V.) even after the power is turned OFF, set the zero shift value memory function to ON. "12. Zero shift value memory function" (page 16)

• When the internal measurement value (R.V.) is [-----], [FFFF], or [-FFFF] - that is, when the value is too large (a value outside of ±500 V in near mode and a value outside of ±12.5 kV in far mode)

- the zero shift function cannot be used.

ALARM

BANK

TEMP %RH

0 1 2 3

HI LO R.V.

ZERO SHIFT

TIMING

HOLD

When the zero shift is performed by pressing the zero shift button, the

Reference

shifted state of the internal measurement value (R.V.) is preserved even after the power is turned off.

This is the method to directly enter the tolerance setting value (HI side setting value, LO side setting value).

1 Press the W / X button several times on the main screen. Then

display the HI side setting value on the sub display (lower level).

"Sub Display (Lower Level)" (page 7)

2 Press S / T button to set the HI side setting value.

Item Setting range Default value

HI side setting value -99.999 to 99.999 1.000

Press the X button once and display the LO side setting value on the sub

display (lower level).

ALARM

BANK

[LO]

0 1 2 3

TEMP %RH

HI LO R.V.

ZERO SHIFT

TIMING

HOLD

LO side setting value

4 Press S / T button to set the LO side setting value.

Item Setting range Default value

LO side setting value -99.999 to 99.999 -1.000

After setting, press W / X button to return the sub display to the original display as necessary.

Canceling the Zero Shift (Reset)

When the following operation is performed on the main screen, the zero shift is canceled and the internal measurement value (R.V.) returns to the previous state (initial state) before the zero shift function is used.

• Press the zero shift button [ZERO SHIFT] for 2 seconds or more.

The following screen appears after operation.

Bank Function (Registering Multiple Tolerance Setting Values)

Using the bank function, you can register up to four patterns of specified tolerance settings. By using the bank function, multiple setting items registered beforehand can be switched easily.

Settings Registered with each Bank

Settings Reference page

HI side setting value

LO side setting value

"Changing the Tolerance Values" (page 9)

As soon as the HI side setting value and the LO side setting value are entered, the judgment and output begin with the new setting value.

E SK-1000 IM

How to Switch Banks

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

Lock set

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

Lock canceled

1. rnG

2. AvE

3. out

4. dst

5. HLd

6. HLd

7. tiM

8. HYS

9. AnG

10. in

11. bnK

12. SFt

13. dSP

Banks can be switched by either of the methods below.

• Front panel commands on the amplifier.

• Use the external inputs (Bank A input, Bank B input)*

* If the bank switching method is set to external input, and bank A input or bank

B input is set for the external input, banks can be switched with the external input.

"10. External input" (page 15) "11. Bank switching method" (page 16)

Key Lock Function

The key lock function prevents unwanted button operations during measurement. When the key lock function is active, operations other than switching the main screen and canceling the key lock function are disabled.

Starting the Key Lock

While pressing the [MODE] button on the main screen, press S or T button for 2 seconds or more. After [Loc] blinks on the main display (upper level) for several seconds, the main screen is restored.

4. Setting Various Functions

This chapter describes the various functions of the SK Series.

Basic Settings and Advanced Settings

List of Setting Items

The following items can be set.

Typ e Setting item Description

Basic settings

1.Measurement range

2.Averaging rate

3.Output state

4.Distance setting

Set the measurement range. 11

Set the number of samples to average. 11

Select the output state (N.O./N.C.) of the judgment output to turn ON/OFF according to the judgment value.

Set the distance correction. 11

Reference

page

If buttons other than display switching button on the sub display (lower level) are operated in the key-locked state, [Loc] is displayed on the main display (upper level) and setting change operation is ignored.

Canceling the Key Lock (Unlock)

While pressing the [MODE] button, press S or T button for 2 seconds or more. After [

unL] blinks on the sub display (lower level) for several seconds, the main

screen is restored.

5. Area scaling

6. Hold function

7.Timing input

8.Hysteresis

Advanced

9.Analog output scaling

settings

10.External input

11.Bank switching method

12.Zero shift value memory function

13. Display digit

Set the area scaling. 12

Set the method to use in holding the judgment value (P.V.)

Set the timing input type used for the hold function.

Set the hysteresis value for the tolerance setting value.

Set the analog output scaling for the judgment value (P.V.).

Select the functions of the four external inputs.

Set the bank switching method. 16

Set whether to store in the nonvolatile memory (EEPROM) the state of the display as shifted by the zero shift function.

Set the number of displayed digits of the judgment value (P.V.) and the internal measurement value (R.V.).

E SK-1000 IM

Setting Screen

This section describes operations and the setting screen to modify the basic settings and the detailed setting.

 How to go to the setting screen

Press the [MODE] button for approx. 2 seconds on the main screen. The setting screen appears.

 Basic operations on the setting screen

Changing the setting value: S / T button Go to the next setting item: [MODE] button or X button Return to the previous setting item: W button Skip the rest of the settings and finish: Press and hold the [MODE] button for approx. 2 seconds.

 Setting screen view

The setting item is displayed on the main display (upper level) and the setting value is displayed on the sub display (lower level).

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

Basic setting

Main screen

1.Measurement range

2.Averaging rate

[MODE] Press for 2 seconds.

[MODE] or X

Select the advanced settings

Return to the main screen.

To the 4. Distance setting screen

(page 11) (page 11)

Basic setting complete

3.Output state [MODE] or X

(page 11)

S or T

[MODE] or X

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

Advanced settings

4.Distance

setting

[MODE] or X

Advanced setting complete

[MODE] or X

5.Area scaling [MODE] or X

[MODE] or X

8.Hysteresis

9.Analog output scaling

10.External input

11.Bank switching method

12.Zero shift value memory function

(page 11) (page 12)

(page 14) (page 14) (page 14)

(page 15) (page 16) (page 16)

From the advanced settings selection screen

[MODE] or X

7.Timing input

Return to the main screen.

13.Display digit

(page 16)

[MODE] or X

6.Hold function

(page 12)

1. rnG

near

far

2. Ave

3. Output state

NOTICE

3. out

4. dst

defLt

Usr

4. dst 25

U-dst

[MODE]

or

Usr

4. dst

100

U-dst

[MODE]

or

Set the output state (N.O./N.C.) of judgment output ON/OFF.

Item Description

Output state no (Normally Open), nC (Normally Closed) no

There are three judgment outputs:

• HI judgment output (Black wire)

• GO judgment output (Gray wire)

• LO judgment output (White wire)

The judgment output is turned ON/OFF according to the tolerance setting value. "Changing the Tolerance Values" (page 9)

When Normally Open is set

Judgment

HI ON OFF OFF

GO OFF ON OFF

LO OFF OFF ON

Error

"-----"

ON OFF ON

OFF OFF OFF

Judgment output

HI GO LO

When Normally Closed is set

Judgment

HI OFF ON ON

GO ON OFF ON

LO ON ON OFF

Error

"-----"

OFF ON OFF

ON ON ON

Judgment output

HI GO LO

*1 "Error Displays and Corrective Actions" (page 20) *2 When the judgment value (P.V.) is "-----".

Regardless of the output state setting, the judgment indicator on the sensor

Reference

amplifier only matches the judgment output when Normally Open is set.

Default

value

1. Measurement range

You can switch the measurement mode according to the voltage to be measured. Switch the measurement mode to match the application.

Measurement range Description

High-precision mode

Wide-range mode

Ion balance mode

2. Averaging rate

Set the averaging of the data acquired at the sampling rate.

z Averaging rate

The average value is the moving average. If the measured values fluctuate, stable measurements can be obtained by increasing the average count.

Averaging rate 1/2/4/8/16/64/256/1024/4096/16384 64

Item Description

Measurement can be performed in the range of 0 to ±2 kV and the reference distance for measurement is 25 mm.

Measurement can be performed in the range of 0 to ±50 kV and the reference distance for measurement is 100 mm.

The ion balance is measured. The measurement reference distance is 25 mm. (* An optional ion balance plate is required.)

Default

value

Default

value

4. Distance setting

Set the distance correction. When the sensor head cannot be installed at the reference distance (25 mm for "near" and 100 mm for "far"), you can correct the measured value by setting the installation distance.

Distance setting Description

Default setting

User setting

The distance will not be corrected. c

The distance will be corrected. Set the installation distance (the setting range). If the measurement range is "near:" 5 to 50 If the measurement range is "far:" 60 to 120 (unit: mm)

 Distance setting screen

When set to the default setting, [defLt], the following screens are skipped. When you set this to the user setting, [Usr], the distance setting screen is displayed.

z User setting, [Usr]

• If the measurement range is [near]

4.Distance setting Distance

Press the S and T buttons to specify the distance. (Setting range: 5 to 50)

• If the measurement range is [far]

4.Distance setting Distance

Press the S and T buttons to specify the distance. (Setting range: 60 to 120)

Decreasing the installation distance makes the measurement range narrower.

E SK-1000 IM

Default

value

5. Area scaling

5. ScL

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

Press the S/T buttons and specify the correction value. (Setting range: 0.10 to 1.50)

-200 -150 -100 -50 0 50 100 150

200

1.0

0.9

0.8

0.7

0.6

1.01.0

0.90.9

0.80.8 0.70.7 0.60.6

Measurement area [mm]

Distance to the target [mm]

100

110

120

-450 -350 -250 -150 -50 50 15 0 25 0 350 45 0

1.3

1.2

1.1

0.9

0.7

1.31.3

1.2

1.11.1

0.90.9

0.70.7

Measurement area [mm]

Distance to the target [mm]

100

110

120

-450 -350 -250 -150 -50 50 15 0 25 0 350 45 0

1.3

1.2

1.1

0.9

0.7

1.31.3

1.2

1.1

0.90.9

0.70.7

Measurement area [mm]

Distance to the target [mm]

Correction value is 1.1.

The measurement area ranging from

-200 mm to +200 mm covers

φ400 mm.

100

110

120

-450 -350 -250 -150 -50 50 150 250 35 0 450

1.3

1.2

1.1

0.9

0.7

1.3

1.2

1.1

1.3

1.2

1.1

0.9

0.7

0.9

0.7

Measurement area [mm]

Distance to the target [mm]

The measurement area ranging from

-390 mm to +390 mm covers φ780 mm.

Correction value is 1.3.

Reference

6. HLd

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

[HOLD] ON

S-H

P-H

b-H

A-H

Auto.P

Auto.b

Auto.A

S-H

Display value

Time

Judgment value (P.V.) Internal measurement value (R.V.)*

Timing Input

OFF

Power ON or Reset input *

After the power is turned on or reset is input, the judgment value (P.V.) is [- - - - -] until the timing input is first turned ON.

6. Hold Function

This function configures the settings related to area scaling. The area scaling function corrects errors in the measured value due to size differences of measurement targets by setting a correction value according to the size of the target.

Item Setting range initial value

Area scaling 0.10 to 1.50 1.00

Refer to the correction table shown below to setting the correction value.

z Area scaling correction table

(1) High-precision mode

(2) Wide-range mode

[How to use the correction table and setting example] Take a wide-range mode as an example for setting a correction value where the distance to the target is 100 mm and the size of target is φ400 mm. In this case, use the correction table for the wide-range mode.

The hold method is set for the judgment value (P.V.). Functions other than "Auto peak hold", "Auto bottom hold" and "Auto absolute value hold" require the use of the external input (timing input).

While the judgment value (P.V.) is held, the hold indicator on the sensor amplifier lights up.

Hold function Description

Sample hold

Peak hold

Bottom hold

Absolute value hold

Auto peak hold

Auto bottom hold

When the timing input is turned ON, the judgment value (P.V.) is held. "Sample hold" (page 12)

The maximum value of the specified period (sampling period) is held as the j udgment value (P.V.). "Peak hold" (page 13)

The minimum value of the specified period (sampling period) is held as the j udgment value (P.V.). "Bottom hold" (page 13)

Within the specified period (sampling period), the absolute value of the maximum measured value is held as the judgment value (P.V.). "Absolute value hold" (page 13)

Until the hold-reset input is turned ON, the maximum value is held as the judgment value (P.V.). External input is not necessar y. "Auto peak hold" (page 13)

Until the hold-reset input is turned ON, the minimum value is held as the judgment value (P.V.). External input is not necessar y. "Auto bottom hold" (page 13)

Until the hold-reset input is turned ON, the absolute

Auto absolute value hold

value of the maximum measured value is held as the judgment value (P.V.). External input is not necessar y. "Auto absolute value hold" (page 14)

Default

 Sample hold

When the timing input is turned ON, the judgment value (P.V.) is held.

value

The 100 mm on the vertical axis and 200 mm and -200 mm on the horizontal axis make two intersecting points, crossing the lines marked with the S symbol, which indicate a correction value of 1.1. So, input 1.1 into the amplifier unit.

• When the measurement target is larger than the outermost lines of the correction table:

Example: In wide-range mode, with a distance of 100 mm to the target, and a target size of φ780 mm, if the target is larger than the outermost lines indicating the correction value of 1.3, set the correction value to 1.3.

NOTICE

E SK-1000 IM

The same is true when using high-precision mode. If the target is larger than the outermost lines indicating a correction value of

1.0, set the correction value to 1.0.

z When "Level" is set for "7. Timing input" (page 14)

The judgment value (P.V.) is held only while the timing input is ON.

Display value

Timing Input

OFF

Judgment value (P.V.) Internal measurement value (R.V.)*

Time

z When "Edge" is set for "7. Timing input" (page 14)

The judgment value (P.V.) is held in between rising edges of the timing input.

 Peak hold

P-H

Display value

Time

Timing Input

Sampling period Sampling periodSampling period

OFF

Power ON or Reset input *

After the power is turned on or reset is input, the judgment value (P.V.) is [- - - - -] until the timing input is first turned ON.

Judgment value (P.V.) Internal measurement value (R.V.)*

b-H

Display value

Time

Timing Input

Sampling period Sampling periodSampling period

OFF

Power ON or Reset input *

After the power is turned on or reset is input, the judgment value (P.V.) is [- - - - -] until the timing input is first turned ON.

Judgment value (P.V.) Internal measurement value (R.V.)*

Display value

Time

Timing Input

Sampling period Sampling period Sampling period

OFF

Power ON or Reset input *

After the power is turned on or reset is input, the judgment value (P.V.) is [- - - - -] until the timing input is first turned ON.

Judgment value (P.V.) Internal measurement value (R.V.)*

A-H

Absolute value-hold value

Display value

Time

Timing Input

OFF

Power ON or Reset input

Sampling period Sampling period Sampling period

After the power is turned on or reset is input, the judgment value (P.V.) is [- - - - -] until the timing input is first turned ON.

Measurement value

Auto.P

Auto peak hold value

Display value

Time

Timing Input

OFF

Reset input

OFF

Measurement value

Auto.b

Auto bottom hold value

Display value

Time

Timing Input

OFF

Reset input

OFF

Measurement value

The maximum value of the specified period (sampling period) is held as a judgment value (P.V.).

z When "Level" is set for "7. Timing input" (page 14)

When the timing input is turned ON, the maximum value of the internal measurement value (R.V.) during the sampling period is held as the judgment value (P.V.). When the timing input is turned OFF, the next sampling period begins.

Display value

Judgment value (P.V.) Internal measurement value (R.V.)*

 Absolute value hold

Within the specified period (sampling period), the absolute value of the maximum value of the measured value is held as the judgment value (P.V.).

z When "Level" is set for "7. Timing input" (page 14)

When the timing input is turned ON, the maximum absolute value of the internal measurement value (R.V.) during the sampling period is held as the judgment value (P.V.). When the timing input is turned OFF, the next sampling period begins.

Time

Timing Input

Power ON or Reset input *

Sampling period Sampling periodSampling period

OFF

After the power is turned on or reset is input, the judgment value (P.V.) is [- - - - -] until the timing input is first turned ON.

z When "Edge" is set for "7. Timing input" (page 14)

When the timing input is turned ON, the maximum value of the internal measurement value (R.V.) during the sampling period is held as the judgment value (P.V.). Also, when the timing input is turned ON, the next sampling period begins.

 Bottom hold

The minimum value of the specified period (sampling period) is held as a judgment value (P.V.).

z When "Level" is set for "7. Timing input" (page 14)

When the timing input is turned ON, the minimum value of the internal measurement value (R.V.) during the sampling period is held as the judgment value (P.V.). When the timing input is turned OFF, the next sampling period begins.

z When "Edge" is set for "7. Timing input" (page 14)

When the timing input is turned ON, the maximum absolute value of the internal measurement value (R.V.) during the sampling period is held as the judgment value (P.V.). Also, when the timing input is turned ON, the next sampling period begins.

Timing Input

Power ON or Reset input

Display value

OFF

Measurement value

Absolute value-hold value

Sampling period Sampling period

After the power is turned on or reset is input, the judgment value (P.V.) is [- - - - -] until the timing input is first turned ON.

Sampling period

Time

 Auto peak hold

Until the reset input is turned ON, the maximum value is held as the judgment value (P.V.). External input is not necessary.

z When "Edge" is set for "7. Timing input" (page 14)

When the timing input is turned ON, the minimum value of the internal measurement value (R.V.) during the sampling period is held as the judgment value (P.V.). Also, when the timing input is turned ON, the next sampling period begins.

 Auto bottom hold

Until the reset input is turned ON, the minimum value is held as the judgment value (P.V.). External input is not necessary.

E SK-1000 IM

 Auto absolute value hold

Reference

Auto.A

7. tiM

8. HYS

Time

Hysteresis

Judgment value (P.V.)

HI side setting value

LO side setting value

OFF

HI judgment output

GO judgment output

LO judgment output

9. AnG

dEFLt

Free

(V)

Lower limit Upper limit

Judgment value (P.V.)

Output upper limit

Output lower limit

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

9.Analog Output Scaling

Upper-limit setting screen

Lower-limit setting screen

[MODE] or X

10.External Input

[MODE] or X

Until the hold-reset input is turned ON, the maximum absolute value of the measured value is held as the judgment value (P.V.). External input is not necessary.

Display value

Auto-absolute value-hold value

Measurement value

Time

z Relation of voltage and analog output in default state (dEFLt)

Measurement range Upper limit Lower limit

NEAR 5.000 -5.000

FAR 50. 000 -50.000

The upper and lower limits for the different selections of analog outputs are as follows.

Analog setting Output upper limit Output lower limit

OFF Not output

0-5v 5 V 0 V

-5-5v 5 V -5 V

1-5v 5 V 1 V

AMPr 20 mA 4 mA

Timing Input

Reset input

OFF

7. Timing input

Set the external input (timing input) operation used for "6. Hold Function" (page

12). If "Auto peak hold," "Auto bottom hold," or "Auto absolute value hold" is set, this

item is skipped.

Item Description

Timing input LeveL (Level), edGe (Edge) LEvEL

Default

value

For details, refer to the "6. Hold Function" (page 12).

8. Hysteresis

Set the hysteresis for the tolerance setting value. If the judgment value (P.V.) fluctuates close to the tolerance setting value, causing the judgment output to repeatedly turn ON and OFF, increase the hysteresis value to stabilize the judgment output.

Item Description

Default

value

Hysteresis 0.000 to 99.999 0.100

Above is the timing chart for when the judgment output state is Normally Open (default value). ON/OFF is reversed for Normally Close.

9. Analog output scaling

The analog output scaling for the judgment value (P.V.) is set. If the analog output is set to no output, this screen is skipped.

"Operation When the Power is Turned on for the First Time" (page 7) "Initial Reset (Initialize)" (page 8)

Analog output scaling Description

Default setting

Scaling is not performed. c

Default

value

 Upper limit setting screen and lower limit setting screen

When set to the default state [dEFLt], the following screens will be skipped. When set to free range, the upper limit setting and lower limit setting screens will appear.

z For free range (FrEE)

Press S / T button on each setting screen to specify the upper limit and the lower limit.

z Setting range for analog output scaling

If free range is selected for the analog output scaling state, the upper limit and lower limit can be set within the range shown below.

Measurement range Description Default value

Upper limit -99.999 to 99.999 10.000

Lower limit -99.999 to 99.999 -10 .000

Analog Output Accuracy

The analog output can be selected from ± 5 V, 1 to 5 V, 0 to 5 V or 4 to 20 mA.

Voltage output Current output

Output range

± 5 V (Full scale 10 V)

Output resistance 100 Ω -

Maximum load resistance - 350 Ω

Repeatability ± 1 mV ± 1.5 μA

Accuracy in respect to display ± 0.05% of F.S. ± 0.25% of F.S.

Temperature characteristics ± 0.005% of F.S./°C ± 0.01% of F.S./°C

Refresh rate

Same as sensor head sampling rate

*1 The averaging is as follows for averaging greater than 1024 times:

1024 times: Sampling rate x 4 2048 times: Sampling rate x 8 4096 times: Sampling rate x 16

4 to 20 mA (Full scale 16 mA)

Free range

Example 1: Lower limit < Upper limit

(Analog output 1 to 5 V)

(V) Output upper limit

Output lower limit

E SK-1000 IM

If Upper limit = Lower limit is set, the analog output is as follows: Judgment value (P.V.) < Upper limit: Analog output lower limit (1V in the case of 1V to 5V output range) Judgment value (P.V.) > Upper limit: Analog output upper limit (5V in the case of 1V to 5V output range)

Lower limit Upper limit

Scaling is performed. The analog output range can be changed by specifying the upper limit and lower limit of the judgment value (P.V.).

Example 2: Lower limit > Upper limit

(Analog output 1 to 5 V)

Judgment value (P.V.)

10. External input

Reference

10. in

dEFLt

Usr

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

10.External Input External input 1 setting screen

External input 2 setting screen

External input 3 setting screen

External input 4 setting screen

11.Bank switching method

[MODE] or X

Internal measurement value (R.V.)

Max. 20 ms

Min. 20 msMin. 20 ms

R.V. before shift R.V. after shift

OFF

Zero shift input

Judgment value (P.V.) judgment output

Min. 20 ms

Before resetting [-----]

OFF

Reset input

Max. 2 msMax. 2 ms

Min. 2 msMin. 2 ms

OFF

Max. 2 ms

Sampling does not start Sampling period Sampling starts

Previous result

Judgment value (P.V.) judgment output

Timing Input

Judgment value (P.V.) judgment output

Max. 2 msMax. 2 ms

Min. 2 msMin. 2 ms

OFF

Timing Input

Sampling period 1

Sampling period 1 result Sampling period 2 resultPrevious result

Sampling period 2 Sampling period 3

Judgment value (P.V.) judgment output

Max. 8 ms

Max. 20 ms

Min. 20 ms

OFF

Bank A input

OFF

Bank B input

Max. 20 ms

Bank 1 Bank 2 Bank 3Bank 0

In this example, after 8 ms have passed, Bank A and Bank B are judged as OFF and operation at Bank 0 may be performed.

You can select functions to be assigned to four external inputs (External input 1 to

4).

External input Description

Default setting

User setting

Functions for the external inputs remain the same as the factory default setting.

Functions for the external inputs are changed from

Default

value

the factory default setting.

 External input setting screen

When the user setting is set, each function of the external input 1 to 4 can be set. Functions that can be set differ for each external input. (When the default is set,

these four screens are skipped.)

 Timing Input

When the timing input is turned ON while using the hold function, the judgment value (P.V.) is held.

z Timing chart

• When Sample hold is set "Timing Input" (page 15) setting: "Level"

Measuring period Measuring period

Judgment value (P.V.) judgment output

Timing Input

OFF

"Timing Input" (page 15) setting: "Edge"

Hold released

Sample hold

Max. 2 msMax. 2 msMax. 2 ms

Min. 2 msMin. 2 ms

Press S / T button on each setting screen to specify functions

External Input 1 (Pink wire) External Input 2 (Yellow wire)

Setting

value

Shift

bnK-a

bnK-b

off

Description

Zero shift input

Bank A input

Bank B input

Not used

Default

value

c reset

Setting

value

bnK-a

bnK-b

off

Description

Reset input

Bank A input

Bank B input

Not used

Default

value

External input 3 (Pink/Purple wire) External Input 4 (Purple wire)

Setting

value

tiMnG

bnK-a

bnK-b

off

Description

Timing Input

Bank A input

Bank B input

Not used

When the same function is selected for multiple external inputs, the inputs function according to OR operation.

Default

value

c bnK-a

Setting

value

bnK-b

off

Description

Bank A input

Bank B input

Not used

Default

value

 Zero shift input

When the zero shift input is set to ON, the internal measurement value (R.V.) is shifted (offset) to the selected shift target value.

z Timing chart

Judgment value (P.V.) judgment output

Timing Input

OFF

Sample holdSample hold Sample hold

Max. 2 msMax. 2 msMax. 2 ms

Min. 2 msMin. 2 ms

• When Peak hold, Bottom hold or Absolute value hold is set "Timing Input" (page 15)setting: "Level"

"Timing Input" (page 15) setting: "Edge"

z Minimum Input Time

ON time: 2 ms OFF time: 2 ms

z Minimum Input Time

ON time: 20 ms OFF time: 20 ms

 Reset input

When the reset input is turned ON while using the hold function, the judgment value (P.V.) in the held state is canceled and the value becomes [-----].

z Timing chart

z Minimum Input Time

ON time: 20 ms OFF time: 20 ms

T1 = Input response delay (20 ms max.) + reset time* * Reset time (judgment output, analog output) = Sampling period × (averaging

rate + 2)

 Bank A input/Bank B input

By combining the ON/OFF status of bank A input and bank B input, you can switch between banks.

z Timing chart

When the judgment value (P.V.) is held using the hold function, the

Reference

judgment value (P.V.) remains held even if the ON/OFF status of bank A input or bank B input is switched. However, the judgment output will change according to the HI/LO setting value of the new bank.

z Minimum Input Time

ON time: 20 ms OFF time: 20 ms

E SK-1000 IM

11. Bank switching method

Reference

11. bnK

btn

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

Bank indicator

BANK 0 lights

BANK 1 lights

BANK 2 lights

BANK 3 lights

Press T while holding down the [MODE] button.

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

12. SFt

13. dSP

12. Zero shift value memory function

Set whether to switch the bank with the amplifier buttons or with external inputs.

Bank switching method Description

Switching with buttons

Switching with external input

The banks are switched with the amplifier buttons. c

The banks are switched only by turning ON/OFF the bank A input or bank B input set in "10. External input".

Default

value

* If switching with buttons is selected, the bank can be switched only with the

amplifier buttons. If switching with external input is selected, the bank can be switched only by the external inputs.

 Switching the bank with button operations

Press the S / T button while holding down the [MODE] button on the main screen. The bank will switch, and the bank indicator [BANK0 to 3] will light according to the selected bank.

To save the zero shift performed with the external input, change the setting for the nonvolatile memory (EEPROM) to save the shifted value. When the zero shift is performed with the sensor amplifier button operation, it is saved on the nonvolatile memory (EEPROM) regardless of the setting.

Point

If the data is written in the nonvolatile memory (EEPROM) over 1 million times, the error message is displayed and the setting may not be saved any more. (It is still possible to obtain a measurement value.) For such cases as when a PLC frequently executes a zero shift, and it is not necessary to store it in the nonvolatile memory (EEPROM), it is recommended to turn this setting OFF.

Zero shift value memory Description

OFF

Do not save on the nonvolatile memory (EEPROM) c

Save on the nonvolatile memory (EEPROM)

Default

value

13. Displayed digits

Set the number of digits for the judgment value (P.V.) and the internal measurement value (R.V.) to display on the sensor amplifier.

Displayed digits Description

Operations are performed such as to maintain a

dEFLt

three-digit display. The unit is automatically switched between V and kV and the decimal point position is automatically switched.

0.001 3 decimal places

0.01 Truncate the 3rd decimal place

0.1 Truncate the 2nd decimal place

1 Truncate the 1st decimal place

Default

value

• If the S button is pressed while holding down the [MODE] button,

the banks will change in the reverse direction.

• The banks cannot be switched with buttons if the bank switching method is set to external input. If the banks are switched with buttons, the following is displayed.

 Switching banks by external input

When the Bank A input and Bank B input are set for the external inputs, the bank can be switched using the external inputs.

1 The banks are switched with the ON/OFF combination of the bank A

input and bank B input.

• The bank input must be held 20 ms or longer.

• The combinations of bank A input and bank B input are shown in the

following table.

Bank Bank A input Bank B input

Bank 0 OFF OFF

Bank 1 ON OFF

Bank 2 OFF ON ON: Short-circuited

Bank 3 ON ON OFF: Open

If the external input is not set to bank A or bank B, it is regarded as OFF. (Example) If only Bank A input is set for the external input, only two

banks (bank 0 and bank 1) can be selected using the external input.

2 The bank switching method must be set to external input.

E SK-1000 IM

Simulation Mode

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

off

51.out

Setting value Description

OFF No signal is output.

HI The HI signal is output.

GO The GO signal is output.

LO The LO signal is output.

ALM The alarm signal is output.

----

52.in Hi

53.AnG

Setting

value

Description

The upper limit of the analog output is generated.

Mid

The middle value of the analog output is generated.

The lower limit of the analog output is generated.

Err

The output value when an error occurs is output.

HOLD

ALARM

BANK

ZERO SHIFT

TIMING

TEMP %RH

HI LO R.V.

0 1 2 3

Return to the main screen.

You can use this function to check that the I/O control cable has been wired correctly.

Main screen

1 On the main screen, while pressing the

[MODE] button, press the W button five times.

[51.out] is displayed on the main display (upper

While pressing the [MODE] button, press the W button five times.

level).

2 Use the S/T buttons to display the signal that

you want to output in the sub display (lower level). The signal will be output when it is displayed. Press the [MODE] button to proceed to the next step.

[MODE] button

3 When you turn ON external input 1 to external

input 4, the corresponding part of the display will change from [_] to [o].

From the right, the parts correspond to external inputs 1, 2, 3, and 4. Press the [MODE] button to proceed to the next step.

[MODE] button

(Example) [___o] indicates that external input 1 is

on. [o_o_] indicates that external inputs 2 and 4 are on.

4 The upper limit, middle value, and lower limit

of the analog output are generated. This is not displayed when the analog output is turned OFF. Press the [MODE] button to proceed to the next step.

[MODE] button

(Example) When the analog output setting is 0 to 5 V

5 V is output for Hi, 2.5 V is output for Mid, 0 V is output for Lo, and 5.5 V is output for Err.

5 [END] is displayed on the sub display (lower

level). Press the [MODE] button to complete the procedure and return to the main screen.

5. Specifications

This chapter describes the specifications, circuit diagrams, and dimensions of the SK Series.

Specifications

 Sensor head

Model SK-050

Measurement mode High precision Wide range

Reference distance for

Electrification potential measurement

Temperature measurement

Humidity measurement

Ion balance measurement mode

Environmental resistance

Materials Main body case: PC, metal part: SUS, cable: PVC

Weight Approx. 35 g

*1 Even in the measurement area, if the distance to the detection target is smaller than the

reference distance, measurement cannot be performed up to the upper limit of the measurement range.

*2 When measured an average of 256 times, this value is ±100 V or less in high-precision

mode and ±1 kV or less in wide-range mode, and ±10% (indicated value) in other ranges. *3 The measurement accuracy range is ± 30 kV. *4 At 25°C and with a humidity of 50%RH *5 OP-87934 is necessary. *6 This is when ±100 V or less, and ±10% (indicated value) in other ranges.

measurement

Measurement distance 5 to 50 mm 60 to 120 mm

Measurement range

Measurement accuracy

Sampling time Approx. 1.4 ms

Measurement range 0 to 50°C

Measurement accuracy

Minimum display unit 0.1°C

Sampling time 1 s

Measurement range 10 to 85% RH

Measurement accuracy

Minimum display unit 0.1% RH

Sampling time 1 s

Ion balance measurement range

Measurement accuracy

Minimum display unit 1 V

Ambient temperature 0 to 50°C (no freezing and no condensation)

Ambient humidity 10 to 85%RH (no condensation)

 Sensor amplifier

Model SK-1000 SK-1050

Type Mounting DIN rail.

Main unit/expansion unit Main unit Expansion unit

Display

Analog voltage output

Analog current output

Control input

Control output

Power supply

Environmental resistance

Materials

Weight (Including accessories) Approx. 150g Approx. 140g

*1 Select one from ±5 V, 1-5 V, 0-5 V, 4-20 mA. *2 The four external input wires are assigned to arbitrary inputs.

*3 Rated NPN open-collector output: max. 50 mA/ch (20 mA/ch when expansion units are

*4 Power supply voltage of 20-30 V when five or more expansion units are connected. *5 Max. 11.3 W when eight units and the DL Series are connected.

Minimum display unit 0.001 kV

Display range ±99.999 kV to 99 kV (Four-stage selection possible)

Zero shift input

Timing input

Reset input

Bank input

Judgment output

Alarm output Open-collector output (NPN/PNP switchable, N.C.)

Supply voltage

Current consumption (Excluding the load current of each output.)

Ambient temperature 0 to 50°C (no freezing and no condensation)

Ambient humidity 10 to 85%RH (no condensation)

Rated novoltage input: ON voltage of 2 V or less, OFF current of 0.02 mA or less.

Rated voltage input: max. input rating of 30 V or less, ON voltage of 7.5 V or more, OFF

current of 0.05 mA or less.

connected), 30 V or less, residual voltage of 1 V or less (1.5 V or less when five or more

expansion units are connected).

Rated PNP open-collector output: max. 50 mA/ch (20 mA/ch when expansion units are

connected), supply voltage or less, residual voltage of 2 V or less (2.5 V or less when five or

more expansion units are connected).

Load resistance: 100Ω

max. load resistance 350Ω

10 to 30 VDC including

(at 30 V, 55 mA max)

25 mm 100 mm

±2 kV ±50 kV

±10 V ±100 V

±1°C

±5% RH

±1 kV

±10 V

±5 V, 1-5 V, 0-5 V,

4 to 20 mA

No-voltage input

Open-collector output

(NPN/PNP switchable; NO/NC switchable)

10% ripple (P-P)

1650 mW or less

Main body case / front cover: PC, key top: POM,

Supplied from the main

1170 mW or less

(at 30 V, 39 mA max)

cable: PVC

E SK-1000 IM

–

unit.

Circuit Diagram

Point

Main circuit

Overcurrent protection circuit

10 to 30 VDC

Brown

0 V

Blue

* Black (HI judgment output)/White (LO judgment output)/

Gray (GO judgment output)/Green (alarm output)

Load

10 to 30 VDC

Brown

0 V

Blue

* Black (HI judgment output)/White (LO judgment output)/

Gray (GO judgment output)/Green (edge check output)

Main circuit

Load

Overcurrent protection circuit

42.4

37.4

17.4

20 21.6

(Min. 15)

35.4

76.3

17.6

8.9

When the cover is open: Max. 109.2

Max.135°

Cable diameter:

4.7

Cable length: 2 m

28.3

18.5

(1.9)

(3.4)

Cable diameter: ø4.8

































Input Circuit Diagram

Output Circuit Diagram

 When NPN output is selected

 When PNP output is selected

 When NPN output is selected

+5V

Main circuit

(Short-circuit current 2 mA or less)

Brown

Blue

* Pink (External input 1)/Yellow (External input 2)/

Pink and Purple(External input 3)/Purple (External input 4)

 When PNP output is selected

Brown

Main circuit

(Short-circuit current 2 mA or less)

Blue

* Pink (External input 1)/Yellow (External input 2)/

Pink and Purple(External input 3)/Purple (External input 4)

10 to 30 VDC

0 V

10 to 30 VDC

0 V

Analog Output Circuit

(Switching signal)

Analog current output circuit

Analog voltage output circuit

Main circuit

Do not short-circuit the shield (analog output GND) and blue (0 V).

Brown

Orange

Analog input equipment

Shield

Blue

Analog voltage/current output circuit 0 to 5 V, 1 to 5 V, -5 to 5 V,

Orange

4 to 20 mA

Analog input equipment

Shield (Analog output GND)

10 to 30 VDC

0 V

Dimensions

z Amplifier

SK-1000/SK-1050

*1 Cable specification : SK-1000 12 cores, Nominal cross-section area

brown/blue: 0.20 mm

: SK-1050 8 cores, Nominal cross-section area:

0.15 mm

*2 Not mounted on the SK-1000.

z Sensor Head

SK-050

, others 0.15 mm

E SK-1000 IM

SK-050+OP-87934



































OP-87934

Response Time

 Response Time

The response time is the time from the point when the sensor recognizes a change in the electric potential of the target to the point when output is generated.

Judgment output response time (maximum value)

Averaging rate Response time (ms)

410

816

16 28

64 102

256 397

1024 1580

4096 6310

16384 25232

Analog output response time= Judgment output response time + 0.3 ms

6. Appendix

Troubleshooting

This section describes corrective actions when errors occur.

Frequently Asked Questions

Problem Check points Corrective actions

Nothing is displayed on the amplifier control unit.

The value fluctuates.

Button operations are ignored.

The judgment output is not output properly.

The analog output cannot be output properly.

The bank cannot be switched by the external input

The sensor head indicator does not change.

Is the power cable connected correctly?

Is the sensor amplifier correctly connected?

Is the averaging value too small (response time set too fast)?

Is the object or sensor head vibrating?

Has the mounting position changed?

Are the output wires and input wires short-circuited?

Is the key lock function enabled?

Is the output polarity set correctly?

Is the unit properly wired?

Is the tolerance setting value set correctly?

Is the output state (N.O./N.C.) set correctly?

Is the unit properly wired?

Is the type of analog output (current/voltage) set correctly?

Is the bank switching method set correctly?

Is the supplied voltage within the specification range?

Is there an error message on the sensor amplifier?

Connect the power cable correctly.

"Mounting and Wiring the Sensor

Amplifier" (page 4)

Connect the sensor amplifier correctly.

"Mounting the Sensor Amplifier"

(page 4)

Increase the averaging.

"2. Averaging rate" (page 11)

Take adequate measures to prevent vibration.

Correctly mount the sensor head.

"Mounting the Sensor Head" (page 5)

Check the wiring.

"Mounting and Wiring the Sensor

Amplifier" (page 4)

Cancel the key lock function.

"Key Lock Function" (page 10) The connected communication unit <DLRS1A> read/write setting switch is set to RW. Set the read/write setting switch to R.

"RS-232C Communication Unit DLRS1A User's Manual"

Change the settings for NPN output and PNP output.

"Initial Reset (Initialize)" (page 8)

Wire the unit correctly.

"Output Circuit Diagram" (page 18)

Set the tolerance setting value.

"Changing the Tolerance Values" (page 9)

Set the output state.

"3. Output state" (page 11)

Wire the unit correctly.

"Output Circuit Diagram" (page 18)

Select the correct type of analog output.

"Initial Reset (Initialize)" (page 8)

Set the bank switching method.

"11. Bank switching method" (page

16)

Use power voltage within the specification range.

"5. Specifications" (page 17)

Take adequate measures according to the error messages.

"Error Displays and Corrective Actions" (page 20)

E SK-1000 IM

Error Displays and Corrective Actions

Reference

ErH

ErC

ErE

Er.coM

-----

-FFFF

FFFF

bK.Loc

Err

ShiFt cMLoc

Non-Error Displays and Corrective Actions

When an error occurs, an error message appears on the sensor amplifier.

• If an error occurs, the judgment output changes to the error status and the alarm output turns OFF.

• When [ErC] is displayed, all judgment outputs and alarm outputs turn OFF to protect the outputs.

• When the error display is other than [ErC] or [ErE], the analog voltage output is 5.5 V and the analog output current is 3.0 mA.

Error displays Error contents Corrective actions

• Check the sensor head connection.

• Check whether the head cable is damaged.

• Check the connection of the head cable to the connector.

• After checking the previous items, cycle power.

• Check the models of the sensor head and sensor amplifier for compatibility.

• Wire the unit correctly.

"Output Circuit Diagram"

(page 18)

• Check the load and reduce the current to be within th e specification range.

• Check that the output wire is not touching other wires or ground.

• Cycle power.

• Perform the initial reset.

"Initial Reset (Initialize)"

(page 8)

To save the setting values when the power is turned OFF, replace the sensor amplifier.

Change the settings on the expansion amplifiers again after cycling power.

"Mounting the Sensor

Amplifier" (page 4)

Head error

Overcurrent error

EEPROM error

Communication error

• The sensor head is not connected.

• The head cable is damaged.

• The sensor head is damaged.

• A sensor head is connected

that is incompatible with this amplifier.

Overcurrent beyond specification is flowing through the judgment output or alarm output.

Reading/writing the nonvolatile memory (EEPROM) storage has failed.

Data has been written in the nonvolatile memory (EEPROM) over 1 million times and malfunction occurred.

When using the zero shift function frequently, make sure that the zero shift value is not saved in the nonvolatile memory (EEPROM).

" 12. Zero shift value memory function" (page 16)

Communication cannot be established with the expansion sensor amplifiers.

When the judgment value (P.V.) is "-----" the judgment outputs turn OFF (When Normally Open is set), the analog voltage output is 5.5 V and the analog output current is 3.0 mA.

If the internal measurement value (R.V.) becomes [-----] because the

Reference

target is out of the measurement range, the internal measurement value (R.V.) retains the value immediately before the target disappears for the period the response time elapses. After the response time elapses, the internal measurement value (R.V.) becomes [-----].

Display Description Corrective actions

This occurs when the power is turned on and immediately after the head is connected or a reset is performed. When the amount of processing specified by the set averaging rate finishes and the measured value is confirmed, this value will be shown on the measured value display.

Check the hold function setting. Input the timing input according to the setting.

" 6. Hold Function" (page 12)

Check the set measurement range, and if necessary, set it to a range that corresponds to the charged state of the target.

" 1. Measurement range"

(page 11)

To switch the banks with button operations, set "11. Bank switching method" to btn.

Shift the display with the internal measurement value (R.V.) in the numeric state (the state in which the target is measured).

The connected communication unit <DL-RS1A> read/write setting switch is set to RW. Set the read/write setting switch to R.

"RS-232C Communication

Unit DL-RS1A User's Manual"

The internal measurement value (R.V.) is displayed as [-----].

The judgment value (P.V.) is displayed as [-----].

The measurement value is displayed as [-ffff].

The measurement value is displayed as [ffff].

The averaging buffer is not full and the measured value has not been confirmed.

The hold function is used and the judgment value (P.V.) has not been confirmed.

The measurement value is smaller than the lower limit of the display range.

The measurement value is larger than the upper limit of the display range.

The bank switching method is set to external input.

When R.V. is [-----], [FFFF], or [-FFFF] - that is, when the value is too large (a value outside of ±500 V in near mode and a value outside of ±12.5 kV in far mode)the zero shift function has been used.

The button operation is disabled.

E SK-1000 IM

Display Screen and Output

Reference

-----

FFFF

-FFFF

ErC

ErE

Normally, the judgment value (P.V.) is displayed on the main display (upper level). This section describes the judgment output and analog output status when displays other than numbers appear on the main display.

The judgment indicator on the sensor amplifier operates in the same way as Normally Open regardless of the output state setting.

Analog output

Vol ta ge

(current)

value

Voltage (current) for measured value

Analog voltage output: 5.5 V fixed Analog current output: 3.0 mA fixed

Upper limit of analog output range (For 1-5 V, fixed to 5 V) (When upper limit < lower limit: 1 V)

Lower limit of analog output range (For 1-5 V, fixed to 1 V) (When upper limit < lower limit: 5 V)

Follows setting details

Analog voltage output: 5.5 V fixed Analog current output: 3.0 mA fixed

Voltage (current) for measured value

Status

Measuring

Out of measurement range

Out of display range

Setting

Other than [Erc], [ErE] errors

" Error Displays and Corrective Actions" (page

20)

Overcurrent error

EEPROM error

Amplifier Control input Control output

Upper

Judgment

level

indicator

main

display

Judgment

Measure-

value

ment

(P.V)

results

----- All off Yes Yes No All OFF

Only HI

FFFF

lights

Only LO

-FFFF lights

Follows

Setting

setting

item

details

HI/LO

Error

simulta-

display

neously light

ErC All off Yes Yes Yes All OFF

Measurement

ErE

results

Bank

Timing/

switching/

Reset

emission

stop

Yes Yes Ye s

Yes Yes N o

During error: No Other

Yes than error: Yes

No Yes No

Yes Yes Ye s

Zero-shift

Outside measurement range, during error: No

Judgment

output

Measurement results

Only HI output ON

Only LO output ON

Follows setting details

HI/LO output simultaneously ON

Measurement results

Alarm

Output: ON Display: OFF

Output: OFF Display: ON

Output: ON Display: OFF

Output: OFF Display: ON

Measurement in progress, or same as out of measurement range

Factory Setting (Default Value) List

This section describes the factory settings (default values). If the initial reset is performed, the following default values will be restored. " Initial Reset (Initialize)" (page 8)

Values set on the main screen

Banks 0 to 3 will all be set to the same values.

Setting item Default value

HI tolerance setting value 1.000

LO tolerance setting value -1.000

Basic settings and advanced settings

Setting item

1. Measurement range

2. Averaging rate

3. Output state

4. Distance setting

5. Area scaling

6. Hold function

7. Timing input

8. Hysteresis

9. Analog output scaling

10. External input

11. Bank switching method

12. Zero shift value memory function

13. Display digit

Default

value

Measurement can be performed in the range of 0

near

to ±2 kV and the reference distance for measurement is 25 mm.

Averaging rate: 64

Normally open

dEFLt

The distance will not be corrected.

1.00

S-H

Sample hold.

LEvEL

Level

0.100

dEFLt

Default setting

dEFLt

Default setting

btn

Button operation

Data will not be stored in the nonvolatile memory

M-oFF

(EEPROM).

dEFLt

Default setting

Description

E SK-1000 IM

WARRANTIES AND DISCLAIMERS

(1) KEYENCE warrants the Products to be free of defects in materials and

workmanship for a period of one (1) year from the date of shipment. If any models or samples were shown to Buyer, such models or samples were used merely to illustrate the general type and quality of the Products and not to represent that the Products would necessarily conform to said models or samples. Any Products found to be defective must be shipped to KEYENCE with all shipping costs paid by Buyer or offered to KEYENCE for inspection and examination. Upon examination by KEYENCE, KEYENCE, at its sole option, will refund the purchase price of, or repair or replace at no charge any Products found to be defective. This warranty does not apply to any defects resulting from any action of Buyer, including but not limited to improper installation, improper interfacing, improper repair, unauthorized modification, misapplication and mishandling, such as exposure to excessive current, heat, coldness, moisture, vibration or outdoors air. Components which wear are not warranted.

(2) KEYENCE is pleased to offer suggestions on the use of its various Products.

They are only suggestions, and it is Buyer's responsibility to ascertain the fitness of the Products for Buyer’s intended use. KEYENCE will not be responsible for any damages that may result from the use of the Products.

(3) The Products and any samples ("Products/Samples") supplied to Buyer are not

to be used internally in humans, for human transpor tation, as safety devices or fail-safe systems, unless their written specifications state otherwise. Should any Products/Samples be used in such a manner or misused in any way, KEYENCE assumes no responsibility, and additionally Buyer will indemnify KEYENCE and hold KEYENCE harmless from any liability or damage whatsoever arising out of any misuse of the Products/Samples.

(4) OTHER THAN AS STATED HEREIN, THE PRODUCTS/SAMPLES ARE

PROVIDED WITH NO OTHER WARRANTIES WHATSOEVER. ALL EXPRESS, IMPLIED, AND STATUTORY WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT OF PROPRIETARY RIGHTS, ARE EXPRESSLY DISCLAIMED. IN NO EVENT SHALL KEYENCE AND ITS AFFILIATED ENTITIES BE LIABLE TO ANY PERSON OR ENTITY FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE, SPECIAL OR CONSEQUENTIAL DAMAGES (INCLUDING, WITHOUT LIMITATION, ANY DAMAGES RESULTING FROM LOSS OF USE, BUSINESS INTERRUPTION, LOSS OF INFORMATION, LOSS OR INACCURACY OF DATA, LOSS OF PROFITS, LOSS OF SAVINGS, THE COST OF PROCUREMENT OF SUBSTITUTED GOODS, SERVICES OR TECHNOLOGIES, OR FOR ANY MATTER ARISING OUT OF OR IN CONNECTION WITH THE USE OR INABILITY TO USE THE PRODUCTS, EVEN IF KEYENCE OR ONE OF ITS AFFILIATED ENTITIES WAS ADVISED OF A POSSIBLE THIRD PARTY’S CLAIM FOR DAMAGES OR ANY OTHER CLAIM AGAINST BUYER. In some jurisdictions, some of the

foregoing warranty disclaimers or damage limitations may not apply.

BUYER'S TRANSFER OBLIGATIONS:

If the Products/Samples purchased by Buyer are to be resold or delivered to a third party, Buyer must provide such third party with a copy of this document, all specifications, manuals, catalogs, leaflets and written information provided to Buyer pertaining to the Products/Samples.

E 1101-3

E SK-1000 IM

13427E 1114-1 96M13428 Printed in Japan

E SK-1000 IM

KEYENCE SK-1000 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

Safety Precautions

General Precautions

Safety Information for the SK-1000 series

Abnormal Conditions

Precautions for Use

Other Precautions

Precautions for Regulations and Standards

1. Before Use

Part Names and Functions

Checking the Package Contents

2. Installation and Connection

Mounting and Wiring the Sensor Amplifier

Connecting and Mounting the Sensor Head

3. Basic Operations

Operations on the Main Screens

Operation When the Power is Turned on for the First Time

Initial Reset (Initialize)

Changing the Tolerance Values

Zero Shift Function (Shifting the Internal Measurement Value (R.V.))

Bank Function (Registering Multiple Tolerance Setting Values)

Key Lock Function

4. Setting Various Functions

Basic Settings and Advanced Settings

Simulation Mode

5. Specifications

Specifications

Circuit Diagram

Dimensions

Response Time

6. Appendix

Troubleshooting

Display Screen and Output

Factory Setting (Default Value) List