Digital-Analog

Conversion Module

User’s Manual

(Hardware)

A1S68DAV/DAI

Thank you for buying the Mitsubishi general-purpose programmable controller MELSEC-A Series

Prior to use, please read both this manual and detailed manual thoroughly and familiarize yourself with the product.

MODEL AJ68DAV-U-H/W-E

MODEL

CODE

13J809

IB (NA)-66586-F(1112) MEE

© 1995 MITSUBISHI ELECTRIC CORPORATION

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SAFETY PRECAUTIONS

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(Read these precautions before using this product.)

Before using this product, please read this manual and the relevant manuals carefully and pay full attention to safety to handle the product correctly.

The instructions given this manual are concerned with this product. Refer to the

User’s Manual of the CPU module in use for details on the safety instructions for the programmable logic controller system.

In this manual, the safety precautions are classified into two levels:

" WARNING" and " CAUTION".

Under some circumstances, failure to observe the precautions given under

" CAUTION" may lead to serious consequences.

Observe the precautions of both levels because they are important for personal and system safety.

Make sure that the end users read this manual and then keep the manual in a safe place for future reference.

[DESIGN PRECAUTIONS]

WARNING

z Provide a failsafe circuit to ensure that the system as whole can continue to function safely even if there is an external power supply fault or PLC failure.

Otherwise there will be danger of accidents due to erroneous outputs or misoperation.

(1) The status of analog output differs depending on the settings for the functions that control analog output. Make the settings with enough care. For details of the analog output status, refer to Section 3.4.4 of the detailed manual.

(2) Normal output may not be obtained from output terminals or their internal circuits.

Provide an external circuit to monitor output signals whose disruption could cause serious accidents.

CAUTION

z Do not bundle the control wire and the communication cable with the main circuit or power line or keep them close to one another.

Keep the control wire and the communication cable at least 100mm (3.94inch) away from the main circuit or power line.

Otherwise, noise or malfunctions will occur. z At power ON/OFF, voltage or current may instantaneously be output from the output terminal of this module. In such case, wait until the analog output becomes stable to start controlling the external device.

[INSTALLATION PRECAUTIONS]

CAUTION

z Use the PLC in an environment that meets the general specifications given in the

User’s Manual of the CPU module in use.

Using it an environment which does not meet the general specifications could cause electric shock, fire or malfunctions, and damage or deterioration of the module. z Install the module by engaging the module mounting projections on the lower part of the module in the mounting holes of the base unit.

Incorrect installation could result in malfunctions, failure of detachment.

[WIRING PRECAUTIONS]

CAUTION

z Ground the FG terminal using third class grounding or higher exclusively for the PLC.

If you do not, the PLC will malfunction. z Before connecting wires to the PLC, check the rated voltage and the terminal arrangement.

Connecting power of a different voltage or wiring incorrectly will result in fire or failure. z Tighten the terminal screws to the specified torque.

Loose terminal screws will cause a short, fire or malfunctioning. z Take all possible measures to prevent chips or wire scraps from entering the module.

Entry of foreign material will cause fire, failure of malfunctions.

[STARTING AND MAINTENANCE PRECAUTIONS]

WARNING

z Do not touch the terminals while they are live.

This will cause malfunctions. z Be sure to shut off all phases of the external power supply used by the system before cleaning or retightening the terminal screws.

Not doing so can cause the module to fail or malfunction.

CAUTION

z Do not disassemble or tamper will the module.

This will cause failure, malfunctions, injuries or fire. z Be sure to shut off all phases of the external power supply used by the system before mounting or removing the module.

Not doing so may cause damage to the module. z Do not mount/remove the module onto/from base unit more than 50 times

(IEC61131-2-compliant), after the first use of the product. z Before handling the module, always touch grounded metal, etc. to discharge static electricity from the human body.

Failure to do so may cause the module to fail or malfunction.

[DISPOSAL PRECAUTIONS]

CAUTION

z When disposing of the product, treat it as industrial waste.

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CONDITIONS OF USE FOR THE PRODUCT

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(1) Mitsubishi programmable controller ("the PRODUCT") shall be used in conditions; i) where any problem, fault or failure occurring in the PRODUCT, if any, shall not lead to any major or serious accident; and ii) where the backup and fail-safe function are systematically or automatically provided outside of the PRODUCT for the case of any problem, fault or failure occurring in the PRODUCT.

(2) The PRODUCT has been designed and manufactured for the purpose of being used in general industries.

MITSUBISHI SHALL HAVE NO RESPONSIBILITY OR LIABILITY (INCLUDING,

BUT NOT LIMITED TO ANY AND ALL RESPONSIBILITY OR LIABILITY BASED ON

CONTRACT, WARRANTY, TORT, PRODUCT LIABILITY) FOR ANY INJURY OR

DEATH TO PERSONS OR LOSS OR DAMAGE TO PROPERTY CAUSED BY the

PRODUCT THAT ARE OPERATED OR USED IN APPLICATION NOT INTENDED

OR EXCLUDED BY INSTRUCTIONS, PRECAUTIONS, OR WARNING

CONTAINED IN MITSUBISHI'S USER, INSTRUCTION AND/OR SAFETY

MANUALS, TECHNICAL BULLETINS AND GUIDELINES FOR the PRODUCT.

("Prohibited Application")

Prohibited Applications include, but not limited to, the use of the PRODUCT in; y Nuclear Power Plants and any other power plants operated by Power companies, and/or any other cases in which the public could be affected if any problem or fault occurs in the PRODUCT. y Railway companies or Public service purposes, and/or any other cases in which establishment of a special quality assurance system is required by the Purchaser or End User. y Aircraft or Aerospace, Medical applications, Train equipment, transport equipment such as Elevator and Escalator, Incineration and Fuel devices,

Vehicles, Manned transportation, Equipment for Recreation and Amusement, and

Safety devices, handling of Nuclear or Hazardous Materials or Chemicals, Mining and Drilling, and/or other applications where there is a significant risk of injury to the public or property.

Notwithstanding the above, restrictions Mitsubishi may in its sole discretion, authorize use of the PRODUCT in one or more of the Prohibited Applications, provided that the usage of the PRODUCT is limited only for the specific applications agreed to by Mitsubishi and provided further that no special quality assurance or fail-safe, redundant or other safety features which exceed the general specifications of the PRODUCTs are required. For details, please contact the Mitsubishi representative in your region.

About the Manuals

The following product are available for this equipment.

Refer to the table given below to choose suitable manuals.

Detailed

Manual name

Manual No.

(Model code)

D/A converter module type A1S68DAV/DAI User's Manual IB-66587

COMPLIANCE WITH EMC AND LOW VOLTAGE DIRECTIVES

(1) Method of ensuring compliance

To ensure that Mitsubishi programmable controllers maintain EMC and Low Voltage

Directives when incorporated into other machinery or equipment, certain measures may be necessary. Please refer to one of the following manuals. y User's manual for the CPU module used y User's manual (hardware) for the CPU module or base unit used

The CE mark on the side of the programmable controller indicates compliance with

EMC and Low Voltage Directives.

(2) Additional measures

No additional measures are necessary for the compliance of this product with EMC and Low Voltage Directives.

1. General Description

This manual gives the specifications and handling instructions for the A1S68DAV digital to analog converter module (hereafter called the “A1S68DAV”) and the A1S68DAI digital to analog current converter module (hereafter called the “A1S68DAI”), which are used in combination with a MELSEC A series compact building block type PLC CPU (hereafter called the “PLC CPU”)

A1S68DAV is used to convert incoming digital values (16-bit signed binary data) which are set with the PLC CPU to analog values (voltage outputs ranging from -10V to 10V).

A1S68DAI is used to convert incoming digital values (16-bit signed binary data) which are set with the PLC CPU to analog values (voltage output ranging from 4mA to 20mA).

A1S68DAV and A1S68DAI are referred to as “A1S68DAV/DAI” or “module” in this manual.

1.1 Related manuals

The following manuals given the specifications, handling, and programming method for the A1S68DAV/DAI.

A1S68DAV/DAI User’s Manual (IB-66587)

2. Performance Specifications

The performance specifications of the A1S68DAV/DAI are tabled below.

For the general specifications, refer to the user’s manual for the PLC CPU are using.

Item

Specification

A1S68DAV A1S68DAI

Digital input value

Analog output

I/O characteristics

-2048 to 2047 0 to 4095

-10 to 0 to 10 VDC

(External load resistance:

2K Ω to 1M Ω )

Digital input value

Analog output value

4 to 20mADC

(External load resistance:

0 to 600 Ω )

Digital input value

Analog output value

2000 10V 4000 20mA

1000 5V 2000 12mA

0 4mA

-1000 -5V

-2000 -10V

Maximum resolution of analog value

Overall accuracy (accuracy to maximum value)

5mA 4

± 1% ( ± 100mV)

Maximum conversion time Maximum 4ms *1 /8 channels

±

μ A

1% ( ± 200 μ A)

Output short protection

Analog output points

Insulation method

Offset/gain adjustment

Number of I/O points

Connection terminal

Provided

8 channels/module

Photocoupler insulation between output terminals and PLC power.

Not provided

Special, 32

20 point terminal block (M3.5 × 7screws)

0.75 to 1.5mm

2 Applicable wire size

Applicable solderless terminal

Internal current consumption (5VDC)

R1.25-3, 1.25-YS3A, RAV1.25-3, V1.25-YS3A

0.65A 0.85A

Weight 0.22kg *2

*1 : If the frequency of access from the PLC CPU using FROM/TO instructions is high

(e.g.scan time of 5ms or less with access every scan), this can be extended up to about 6ms.

*2 : The weight in hardware version “ F ” or earlier is 0.28kg.

How to check the hardware version

The hardware version for the A1S68DAV/DAI can be checked on the label on the front of the module.

A

1S68DA

RUN

Software Version

Hardware Version

Front of Module

3. Nomenclature and Settings

The name of each part of the A1S68DAV/DAI is indicated below.

A

1S68DAV

RUN

1)

A

1S68DAI

RUN

13

14

15

16

9

10

11

12

7

8

5

6

3

4

1

2

17

18

19

20

2)

3)

4)

C

7

C

H

8

H

5

C

6

H

1

C

2

C

H

3

C

H

4

HLD/CLR

10

12

2

4

6

8

(FG)

14

16

18

20

11

13

7

9

15

17

19

1

3

5

13

14

15

16

9

10

11

12

17

18

19

20

7

8

5

6

3

4

1

2

5) 5)

Remark

In hardware version “F” or earlier, the RUN LED is positioned 6mm left from the one of hardware version “G” or later.

A

1S68DA

RUN

Hardware version

“F” or earlier

No Name and appearance

1) “RUN”

RUN

2) Analog output hold/clear setting terminals

(terminal No.1,2)

HLD/CLR 2

1

2

3) Analog output terminals

(terminal No.3 to 18)

2

C

H

5

C

3

C

H

4

H

2

C

H

C

H

1

C

7

C

H

8

H

6

C

H

4

6

8

12

14

16

18

3

5

7

9

11

13

15

17

19

Description

LED that indicates the operating status of the A1S68DAV/DAI. operation.

Off :5VDC power supply cut, watchdog timer error, or PLC CPU error.

Flash :Write data error.

Terminals that set the analog output status when the PLC CPU is in the STOP status.

The hold or clear status is set by shorting/opening the connection between terminals 1 and 2.

When shorted :

(HOLD)

When open :

(CLEAR)

At a PLC CPU STOP, the analog value before the

STOP is output.

At a PLC CPU STOP, the analog value shown below is output. y A1S68DAV............0V y A1S68DAI .............4mA

Terminal that output the digital to analog converted values to external destinations in each channel.

1

2

3, 4

5, 6

5

6

11, 12

13, 14

3

4

7, 8

9, 10

7

8

15, 16

17, 18

Frame ground terminal

(Terminal No.20)

18

19

FG

20

5) Code sheet Filled out to indicate the application of each terminal

4. Handling

4.1 Caution on handling

(1) The case module of the A1S68DAV/DAI is made of resin: do not drop is or subject it to strong impact.

(2) Do not remove the printed circuit board from the case.

This could cause failure.

(3) Make sure that no wire offcuts or other debris enters the top of the module during wiring.

If anything does enter the module, remove it.

(4) Tighten the module mounting and the terminal screws as specified below.

Screw

Module mounting screw (M4 screw)

Terminal block terminal screw (M3.5 screw)

Terminal block mounting screw (M4 screw)

Tightening torque range (N y cm)

78 to 118

59 to 88

78 to 118

5. Wiring

The precautions and wiring method for making connection to external devices are as given below.

5.1 Wiring instructions

Inorder for the A1S68DAV/DAI to realize its optimum performance, and to ensure reliable system operation, the external wiring must have minimum susceptibility to noise.

The following cautions therefore apply when configuring the external wiring of the

A1S68DAV/DAI.

(1) Do not bundle the external wiring together with main circuit or high-voltage lines, or load-bearing wires other than those of the PLC.

This will increase susceptibility to noise and the effects of surges and induction.

(2) Ground the shielding of shielded wires and shielded cables at one point.

5.2 Module connection example

(1) An example of the wiring to external devices in the case of an A1S68DAV is shown below.

A1S68DAV

*1 *2

Motor driver, etc.

CH1

D-A converter circuit

3

4

2k

to

1M

GND

D-A converter circuit

17

18

CH8

Motor driver, etc.

2k

to

*1: Use two-core shielded wiring (twisted).

*2: If noise or ripple is generated by the external wiring, connect a 0.1 to 0.47

μ F (25V or more voltage resistance parts) capacitor to the input terminal of the external device.

(2) An example of the wiring to external devices in the case of an A1S68DAI is shown below.

A1S68DAI

*1 *2

Motor driver, etc.

CH1

D-A converter circuit

3

4

0k

to

600k

GND

D-A converter circuit

17

18

CH8

Motor driver, etc.

0k

to

600k

GND

*1: Use two-core shielded wiring (twisted).

*2: If noise or ripple is generated by the external wiring, connect a 0.1 to 0.47

μ F (25V or more voltage resistance parts) capacitor to the input terminal of the external device.

Important

A device with a shared current common line cannot be connected to an A1S68DAI.

If such a devices is connected, normal output will not be possible

A1S68DAI

Device

CH1

D-A converter circuit R

3

4

D-A converter circuit R

17

18

CH8

6. Outside Dimensions

(1) A1S68DAV

6.5

(0.26)

93.6 (3.69)

A

1S68DAV

RUN

9

A

B

C

D

E

F

0

1

2

3

4

5

6

7

8

34.5 (1.36)

Unit:mm(inch)

(2) A1S68DAI

6.5

(0.26)

93.6 (3.69)

A

1S68DAI

RUN

9

A

B

C

D

E

F

4

5

6

0

1

2

3

7

8

34.5 (1.36)

Unit:mm(inch)

WARRANTY

Mitsubishi will not be held liable for damage caused by factors found not to be the cause of

Mitsubishi; machine damage or lost profits caused by faults in the Mitsubishi products; damage, secondary damage, accident compensation caused by special factors unpredictable by Mitsubishi; damages to products other than Mitsubishi products; and to other duties.