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(3) Restrictions by Read/Write Commands Depending on

Equipped Optional Functions

When a command which becomes invalid because an
optional function is not equipped, ER12 should be sent
back. (Read commands are included.)

(4) Others

When P (proportional band)=OFF is prepared to be set, data
is as follows:

7-6. A list of transmitted/received data

The text portions of data in read commands and write commands
are listed below.

Block Data Format

7-6-1. Read command

(1) D1

(2) D2

(3) D3

(4) D4

(5) D5

(6) D6

(7) D7

(8) D8

(9) D9

(10) DA

(11) DB

(12) DC

7-6-2. Write command

In write commands, received data and transmitted data are
identical.

(1) E1

(2) E2

(3) E3

(4) E4

(5) E5

(6) E6

(7) E7

(8) E8

(9) E9

(10) EA

(11) EB

(12) EC

(13) ED

ER12

Condition

Received Command

Without alarm option

Without HB option

D2 (AH/AL) read command

E6 (Set value of AH) write command

E7 (Set value of AL) write command

D3 (CT/HB) read command

E8 (Set value of HB) write command

D4 (Set value of SB) read command

E9 (Set value of SB) write command

Without SB option

OFF

–

40H

Address No.

Text Data

3AH

BCC

0DH

Higher
position

Lower
position

Higher
position

Lower
position

Received
data

Transmitted
data

STBY

MAN

0 (30H) or 1 (31H)

PV
value

SV
value

Output
value

Received
data

Transmitted
data

Set value of AH

Set value of AL

Received
data

Transmitted
data

CT current value

Set value of HB

Received
data

Transmitted
data

Set value of SB

Received
data

Transmitted
data

P value

I value

D value

SF value

Received
data

Transmitted
data

PV bias

PV filter

Received
data

Transmitted
data

Hysteresis

Received
data

Transmitted
data

Set value of MR

Received
data

Transmitted
data

Proportional cycle
time

Received
data

Transmitted
data

Lower limit output
limiter value

Higher limit output
limiter value

Received
data

Transmitted
data

Soft start time

Received
data

Transmitted
data

C_MD

Delay time

SV value

Control output value (OUT)

STBY

STBY : 1 (31H)
EXEC : 0 (30H)

MAN

: 1 (31H)

AUTO : 0 (30H)

AT-ON

: 1 (31H)

AT-OFF : 0 (30H)

Set value of AH

Set value of AL

Set value of HB

Set value of SB

P (proportional band) value

I (integral time) value

D (derivative time) value

SF (target value function) value

Summary of Contents for SR73A Series

Page 1: ...o the instrument On the terminal nameplate affixed to the case of your instrument the mark is printed This is to warn you of the risk of electrical shock which may result if the charger is touched while it is energized A means to allow the power to be turned off such as a switch or a breaker should be installed in the external power circuit to be connected to the power terminal of the instrument F...

Page 2: ... 14 8 Specifications 15 4 1 Introduction 1 1 Check before use This product has been fully checked for quality assurance prior to shipment Nevertheless you are requested to make sure that there is no error damage or shortage of delivered items by confirming the model codes and checking the external view of the product and the number of accessories Confirmation of Model Codes Check the model codes s...

Page 3: ...th 48 height 91 6 width 44 6 Dimension of current transformer CT for heater break alarm For 0 30A CTL 6 S For 0 50A CTL 12 S36 8 unit mm 2 5 Wiring 1 Wiring operation should be done according to the instruction for the terminal arrangement in section 2 6 Exercise care that no wrong connection is made 2 Crimp terminal should accommodate the M3 5 screw and should have a width of less than 7mm 3 For ...

Page 4: ...nitor LED green On selection by ON turns on AT waiting key flashes on AT execution 3 AH alarm output monitor LED red Turns on for higher limit alarm output ON 4 AL HB alarm output monitor LED red Turns on for lower alarm output ON or heater break alarm ON 5 MAN manual control output monitor LED green Flashes when control output is in manual operation 6 STBY control output stop monitor LED green Tu...

Page 5: ... decimal point in the rightmost position on the top row flashes Press the or key to change the lower limit value and press the key to register the data Upon registering the lower limit value data the decimal point in the rightmost digit in the bottom row begins to flash Change the higher limit value by pressing the or key and register it by means of the key Upon registering the higher limit value ...

Page 6: ...ualoperation 0 100 Themeasuredvalue PV isdisplayedonthetopandthecontroloutput valueonthebottom PressingtheMANkeyonthisscreenswitches autotomanualandviceversa RefertoItem4 6 1 fordetail Control execution stop selecting screen Initialvalue EXEC Settingrange EXEC STBY Execution orstop ofcontrolisselected RefertoItem4 6 2 fordetail AT auto tuning action control screen Initialvalue OFF Settingrange OFF...

Page 7: ...ockissetonlockNo 1 2or3 noselectioncanbeperformedevenifthedigitpointis flashing Digits and arenotshownincaseofnooption Digitsof and arenotdisplayed Measuring range code select digit Initialvalue Multi05 Voltage V 81 Current95fixed Selectingtwodigitsfrom 4 5 Measuringrangecodetable Control output characteristic select digit Initialvalue RA heatingcharacteristics DA coolingcharacteristics RefertoIte...

Page 8: ...the higher limit value is forced to be the lower limit value 1 Therefore the higher limit value cannot be set to be less than the lower limit value 1 ENT Note Moving to another screen while maintaining the manual mode is possible In this case it should be noted that control output is made manually The apparatus is in the manual mode when the MAN monitor LED is flashing ENT 6 1 14 Soft Start Time S...

Page 9: ...m option is added and the lower limit alarm of the alarm type select digit on the function selecting screen of the mode 2 group screen group is selected Lower limit deviation value alarm is output for measured value to be less than set value alarm set value For lower limit deviation value alarm if set value alarm set value is less than the lower limit of the measuring range the action point is low...

Page 10: ...nd 74A series two types of communication interface RS 422A and RS 485 are available Each enables a personal computer or the like to set and read various data by the use of signals which conform with EIA standards RS 422A and RS 485 are communication standards established by the Electric Industries Association EIA which are meant for electrical or mechanical matters the so called hardware but not f...

Page 11: ...ront panel turns on and the commands for read and write through communication become valid Front key operation works only to change from remote to local 7 3 2 Communication address setting screen RS 422A and RS 485 allow connection of a plurality of apparatuses but in fact communication is carried out between two apparatuses Therefore the address of each apparatus is designated by a number between...

Page 12: ... value including a code is less than six characters 0 is inserted between the code and the figure or figures to make the value six characters When a code is excluded each of the 5 characters is a figure or a decimal point Examples of numerical data 1 Command The text format of read data contains only of a command of two characters Command Contents of Read Data PV value Execution SV value 1 Control...

Page 13: ...No did not match The end character was not CR 0DH A hardware error such as a framing error overrun or a parity error occurred 7 5 5 Restrictions by commands etc 1 Restrictions by Read Command Upon receiving the D1 read command the status of unequipped options AH AL HB SB become 0 30H 2 Restrictions by Write Command In the case of P OFF and Y and P output write data of E2 write command of manual ou...

Page 14: ...xt Data 3AH BCC CR 0DH Higher position Lower position Higher position Lower position Received data Transmitted data D1 D1 STBY MAN AH AL AT SB 0 30H or 1 31H PV value SV value Output value Received data Transmitted data D2 D2 Set value of AH Set value of AL Received data Transmitted data D3 D3 CT current value Set value of HB Received data Transmitted data D4 D4 Set value of SB Received data Trans...

Page 15: ... Sampling cycle 0 5 sec PV bias range 200 unit PV filter 0 100 sec 0 without filter Control Control mode Auto tuning PID ON OFF control Proportional band P Off 0 1 999 9 FS Off setting On Off action Integral time I Off 1 6000 sec Off setting P PD action Derivative time D Off 1 3600 sec Off setting P PI action Manual reset MR 50 0 50 0 Valid when P OFF and I OFF Output limiter Lower limit limiter 0...

Page 16: ...tact type or the SSR drive voltage type Alarm action Heater amperage detected by externally attached CT except 0 5V DC input Alarm output On upon detection of heater break while control output is On Current setting range Off 0 1 50 0A Alarm action stops when Off is set or Off 1 500A when 0 5 V DC for CT input is selected Setting resolution 0 1A or 1A Amperage display 0 0 55 0A or 0 550A Display ac...

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