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- 7 -

Proportional cycle setting screen (screen No.11) 

Initial value: Contact output   30 seconds 

SSR drive voltage 3 seconds 

Setting range: 1~120 seconds 
Time of proportional setting cycle is set.
The screen does not display voltage or current output. 
Refer to Item 4-6 (4).

Soft start time setting screen (screen No.14)

Initial value: OFF
Setting range: OFF, 1~100%
Time for soft start, during which output is changed gradually, is set. 
Refer to Item 4-6 (6).

Lower limit output limiter setting screen (screen No.12)

Initial value: 0% 
Setting range: 0~99% 
A lower limit value of control output is set.
Refer to Item 4-6 (5) for output limiter.

Communication mode selecting screen (screen No.15)

Initial value: Locl (local)
Setting range: Locl, Remt
Communication is allowed in the mode displayed on the bottom.

Communication address setting screen (screen No.16)

Initial value:  0
Setting range: 0~99
In case a plurality of apparatus are connected for communication, the 
machine No. is set in a range from 0 to 99.

Communication rate selecting screen (screen No.18) 

Initial value: 1200 bps
Selectable range: 1200, 2400, 4800 and 9600 bps
A rate for data transmission to the host is selected.

Delay setting screen Screen No.19
Initial value: 80 
Setting range: 0~255 
Delay time for starting communication from receiving communication 
command is set. 
Delay time = 0.1 

× 

set value msec.

The screen is displayed for RS-485.

Communication data format selection screen (screen No.17)

Initial: 7b_E
Setting range: 7b_E, 8b_n
Select data format of communication from 7b_E (data bit length : 7bits,
parity: even, stop bit : 1)or 8b_n (data bit length: 8bits, parity: none,
stop bit : 1)

Higher limit output limiter setting screen (screen No.13) 

Initial value: 100% 
Setting range: 1~100%
A higher limit value of control output is set. 

Mode 2 Screen Group (Function selecting screen)

NOTE: 

Screen flame on Item 4-4 is as follows:

Screens always shown 
during key operation.

Screens shown or skipped depending on the type of 
output or the setting status of control action mode.

Screens shown during case with 
option or selected option.

1-11

1-12

1-13

1-14

1-15

1-16

1-17

1-18

1-19

Note:

For details of communication, refer to the instructions on 
communication in Item 8. 

V and I 
output 

No 
communi-
cation

RS-422A

2-0

=

=

2-1

Use           key to move select digit and data 
registration, the selectable digit is indicated by 
flashing point.  

ENT

NOTE:

If it is on auto tuning execution or key lock is set on lock No.1,
2 or 3, no selection can be performed even if the digit point is
flashing.

Digits      and      are not shown in case of no option.  Digits of      ,       
and      are not displayed.

     

     :

Measuring range code select digit

Initial value: Multi 05, Voltage (V) 81, Current 95 fixed.
Selecting two digits from “4-5.  Measuring range code table”.

    :

Control output characteristic select digit

Initial value: 

:  RA (heating characteristics)
:  DA (cooling characteristics)

 

Refer to Item 6-3.

    :

Alarm type select digit

Initial value:
Select from “4-2.  Alarm type code table”.

    :

Heater break alarm action mode select digit

 

Initial value:

 

Select from

 

: Lock mode and          : REAL mode.

Refer to Item 5-3 (3).

Input scaling screen

Initial value:
Lower limit value (top row)

0.0

Higher limit value (bottom row) 100.0
Position of decimal point

0.0

Setting range:
Lower limit value -1999~9899 units
Higher limit value -1899~9999 units
Span = Higher limit value - Lower limit value
= 100~5000 counts 
Position of decimal point:
No decimal point, 0.0, 0.00 and 0.000

Scaling is done for linear input (mV, V or mA). 
The screen is only for monitoring and no setting is possible in the case 
of sensor input.
Refer to Item 4-3 (6) for details.

1

2 3

4

5

5

6

3

6

7

1

2

4

5

7

7

8

8

4-5. Measuring range code table

Input type

Code

Code

Measuring

Range

Measuring

Range

*1

*2

*2

B
R

K

K

Pt 100

JPt 100

E
J
T
N
U
L

01

12
13
14
15
16
17
18
19
20
21
22

02
03
04
05
06
07
08
09
10
11
31
32
33
34
35
36
37
38

39
40
41
42
43
44
45
46

71
72
73
81
82
83

95

~

~

~
~

~

~

~

~

~

~

~

~

~

~

~

~

~
~

~

~

~

~
~

~

~

~

~

~

~

~

~

~

~

~

~

~
~

~

~

~

~

~

~

~

~

0

10

0

10

50

100

20

0

0

0

1

5

10

4

V

mA

1800

°

C

1700

°

C

1700

°

C

400

°

C

1200

°

C

700

°

C

600

°

C

200.0

°

C

1300

°

C

200.0

°

C

600

°

C

600

°

C

100.0

°

C

50.0

°

C

200.0

°

C

600

°

C

100.0

°

C

50.0

°

C

200.0

°

C

0
0
0

-100

0
0
0

-199.9

0

-199.9

0

-200

-100.0

-50.0

0.0

-200

-100.0

-50.0

0.0

3300

°

F

3100

°

F

3100

°

F

750

°

F

2200

°

F

1300

°

F

1100

°

F

400

°

F

2300

°

F

400

°

F

1100

°

F

-1100

°

F

200.0

°

F

120.0

°

F

400

°

F

-1100

°

F

200.0

°

F

120.0

°

F

400

°

F

0
0
0

-150

0
0
0

-300

0

-300

0

-300

-150.0

-50.0

0

-300

-150.0

-50.0

0

Thermocouple
B, R, S, K, E, J, T, N: JIS/ANSI/IEC
R. T. D.

Pt100 : Present JIS/IEC
JPt100 : Former JIS

*1 Thermocouple B: Accuracy not 

guaranteed for temperatures 
below 400 

°

C (750 

°

F).

*2 Thermocouple U, L: DIN43710

Multi input

Thermocouple input

R. T. D.

Voltage

Current 

Voltage

mV

Initial value: 0.0~100.0 
Conditions of scaling
Scaling setting range: 
-1999~9999, 
Span: 100~5000 counts 
Position of decimal point: 
No decimal point, the 
first, second and third 
decimal places

In case measuring range is modified, set values, alarm action point and other
related values are all intialized.

NOTE: 

In case types of Alarms are changed, values are initialized.

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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