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Instruction Manual MODEL AM-756

 

14/20

 

6-8 

Group 

Menu Display  Parameter Name 

Setting Range 

Default 

Value 

Description 

Display 

Conditions 

 

Settings Protect 

OFF: Display all 
PATN: No pattern display 
COND: No condition display 
ALL: All displays off 

OFF 

Hides parameters of set group. 
* For parameter groupings, please refer to "Parameter 
Settings Group". 

 

Set Value 

Changes Protect 

OFF: Set values can be changed   
ON: Set values cannot be changed 

OFF 

Enables/disables changes to set parameter values. Even if set 
value change is disabled, display of the values is possible. 

 

Digital Zero 

Protect 

OFF: Digital Zero enabled 
ON: Digital Zero disabled 

OFF 

Limits the digital zero function of the front panel keys. 
*The external control digital zero function is not limited. 

 

Maximum 

Minimum Values 

Protect 

OFF: No limit 
CLR: Limit clear function 
CNG: Limit display switching 

OFF 

Limits  switching  between  maximum  and  minimum  values 
and value reset. 

 

6-9 

グループ

 

Menu Display 

Parameter Name 

Setting Range 

Description 

Display Conditions 

 

Process Value 

-199999 to 199999 

Indicates the measurement value before PH 

* Display only. Settings cannot be made. 

 

Input Unit 

DV: Direct voltage input 
A: Direct current input 
DB: Process input 

Indicates the input unit currently connected. 

* Display only. Settings cannot be made. 

 

Comparative 

Output Unit 

NONE: No comparative output 
PHOTO: Photocoupler output 
RELAY: Relay output 

Indicates the comparative output unit currently 
connected. 

* Display only. Settings cannot be made.

 

 

Optional Unit 

NONE: No optional unit 
C IN: Control terminal 
BCD: BCD output 
A.O: Analog output 

Indicates the optional unit currently connected. 

* Display only. Settings cannot be made. 

 

External Control 

Terminals 

1 to 4 

0: OFF, 1: ON 
4th bit: R:RESET 
3rd bit: PSEL0 
2nd bit: PSEL1 
1st bit: PSEL2 

Indicates the status of the external control terminal. 

* Display only. Settings cannot be made. 

* PSEL2 is permanently OFF during analog output. 

Option: Any other 

than NO 

 

External Control 

Terminals 

5 to 7 

0: OFF, 1: ON 
3rd bit: S/H 
2nd bit: PH 
1st bit: DZ 

 

7 Function List 

7-1 Measurement 

7-1-1 Input 

(1)

 

Input Range (

  Parameters) 

Input Set 

Value 

Input 

Range 

Possible Display 

Range 

Resolution 

11 

±0.2V 

Approx. ±0.21V 

±199999 

12 

  ±2V 

Approx. ±2.1V 

13 

  ±20V 

Approx. ±21V 

14 

  ±200V 

Approx. ±210V 

23 

  ±20mA 

Approx. ±21mA 

24 

  ±200mA 

Approx. ±210mA 

1V 

±5V 

Approx. ±5.25V 

2A 

±20mA 

Approx. ±21mA 

N.B.) Please do not connect unused terminals. 

 
(2)

 

Over range Warning 

The main display will read 

or 

under the following 

conditions. 

The value input is outside the possible display range. 

The measured value exceeds ±199999. 

 

7-1-2 Scaling Function 

Measurement values can be obtained using input values converted into 
arbitrary display values. Scales are converted by using the scaling setting of 
the currently selected pattern. 

Parameters Used: 

to 

to 

to 

to 

 

Calculation Formula 

The scaling calculation formula is as follows. 

Measurement

 value

FSC - FIN

OFS - OIN

×             +

(

)

OFS - OIN ×

FSC

FIN

OFS - OIN

=

Input

 value

 

* Negative scaling settings (reverse gradient) are also possible. 
 
 
 

7-1-3 Digital Limiter Function 

This function sets the upper and lower limits of the displayable range. 
It is limited by the digital limit values of the presently selected pattern. 
When the measurement value is greater than the set upper limit, the displayed 
value is limited by the set upper limit. 

Upper Parameters: 

  to 

 

When the measurement value is less than the set lower limit, the displayed 
value is limited by the set lower limit. 

Lower Parameters: 

  to 

 

 

7-2 Noise Elimination 

7-2-1 Averaging Frequency 

Measurement data obtained at 50 times/ sec is averaged at an interval set by 
the sampling rate. Measurement values, comparative output, analog output and 
BCD output are updated with their average values. 

Parameter Used: 

 

 

7-2-2 Moving Average 

Data which has been averaged by using the sampling rate interval is in turn 
averaged by the quantity of set data. With every sampling, the oldest data is 
discarded and new data is obtained and averaged. 

Parameter Used: 

 

 

7-3 Measurement Value Correction 

7-3-1 Digital Zero 

(1)

 

Digital Zero 

The  current  measurement  value  can  be  shifted  to  zero  by  using  either  the 
external  control  terminal  or  front  panel  keys.  When  digital  zero  is  on,  the 
digital zero function is active, and when digital zero is off, the device runs on 
normal operation.  When  the digital  zero  function is  on, the  function  message 
[DZ] illuminates, enabling visual confirmation of the operating status. 
 

Summary of Contents for AM-756

Page 1: ...s 1 Watanabe Electric Industry Co Ltd assumes no responsibility for any special damage indirect loss or passive loss caused by this device 2 This device has been developed designed and manufactured on...

Page 2: ...elow Min 120mm Min 70mm 0 6 0 45 92 0 0 8 2 2 External Dimensions 48 96 91 5 102 5 77 86 5 97 5 21 4 11 0 5 2 Mode Enter 88 5 2 3 Mounting the Unit on the Panel 1 After removing the mounting bands fro...

Page 3: ...No Name Details 1 NC Unconnected Please do not use these terminals as relay terminals 2 NC 3 NC 4 HI Terminal 5 LO Terminals connected internally 6 LO Input range settings cannot be made 3 3 3 DB Ran...

Page 4: ...nal 5 GO C GO Output photocoupler Collector terminal 6 GO E GO Output photocoupler Emitter terminal 7 LO C LO Output photocoupler Collector terminal 8 LO E LO Output photocoupler Emitter terminal 9 LL...

Page 5: ...ut Display Displays comparative judgment results Extinguished Comparative output OFF 2 Main Display Displays measurement values Displays group name parameters set values 3 Function Indicators RE Unuse...

Page 6: ...ode Enter Mode Enter Mode or Mode Enter Mode or Mode Mode Enter Mode or Mode Enter Mode or Mode Enter Mode or Mode Enter Mode Enter Mode or Mode Enter Mode or Mode Enter Mode Enter Mode or Mode Enter...

Page 7: ...Process value Input unit Comparative output unit Control terminals 5 7 Key repeat will occur when the or keys are held down 4 5 Changing Parameter Settings The diagram below shows the basic operating...

Page 8: ...thin the range or cancel the setting change Canceling Changes to Set Values Pressing the Enter key during the changing of a set value cancels the value change The set value will revert to the value pr...

Page 9: ...e 3 times Enter Enter 5 4 Comparative Output Settings 1 Set the Comparative Output HI Comparative Value to 60 00 As the setting condition is HH HI the value of HH cannot be lower than the value of HI...

Page 10: ...zero control method Option any apart from NO Digital Zero Value 199999 to 199999 digit 0 Sets the digital zero value when digital zero is ON N B If settings are made while digital zero is OFF they wi...

Page 11: ...o 199999 0 Sets the display value when input is offset display values to Offset Input Values 1 to 8 Changes according to input range See chart below See chart below Sets the input value for offset dis...

Page 12: ...t value LO output ON Decimal point position depends on the decimal point position in identical patterns to LL Comparison Set Values 1 to 8 100000 Measurement value LL set value LL output ON Decimal po...

Page 13: ...etting Condition N10i N09i N08i 8000 Input Value 9 Linearize pre correction display Output Value 9 Linearize post correction display LINE Set Value 16 Linearize Output Value 9 199999 to 199999 digit S...

Page 14: ...t Value Input Range Possible Display Range Resolution 11 0 2V Approx 0 21V 199999 12 2V Approx 2 1V 13 20V Approx 21V 14 200V Approx 210V 23 20mA Approx 21mA 24 200mA Approx 210mA 1V 5V Approx 5 25V 2...

Page 15: ...is activated when Tracking zero correction width Measurement value Tracking zero correction width Parameter Used 7 3 3 Step Wide Function This function changes the resolution of the least significant...

Page 16: ...ontrol terminal 2 Operation Type There are two Start Hold operation types Type A free run and Type B one shot Parameter Used Type A This operation type enters hold status when Start Hold is ON halting...

Page 17: ...h output are undefined at start up N B 2 Open collector output is NPN open collector output N B 3 When the computed result is WAIT the data output will be 000000 2 Over range Signal OVER Output is act...

Page 18: ...power External dimensions 96mm W 48mm H 97 5mm D without optional unit installed Weight Approx 200 to 300g Insulation withstands Voltage AC 500V per minute between input terminal and each of the outp...

Page 19: ...the main unit connector female 9 2 Trouble Shooting Problem Possible Cause Solution The monitor display is blank The display blank function is set to extinguish display Turn OFF the extinguish display...

Page 20: ...e Electric Industry Co Ltd Watanabe Electric Industry Co Ltd will make repairs free of charge 11 2 After sales Service This product was manufactured tested inspected and shipped under strict quality c...

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