Aimco Brakes Monitor UECD4800 Instruction Manual

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11. Functions 
11.1. Fastening control 
締付制御の仕様が２種類から選択できます。 
Control method : 3 UEP-MC Wrench Torque Control Tool
 
：５  ＵＥＰ－ＡＭＣトルクコントロール角度モニタリング    
 
1)  UEP-MC Wrench Torque control   
This is to control torque of UEP-MC wrench.   UECD starts torque measurement when detecting 
the start torque or greater torque, and switches on valve terminal to stop the tool when reaching 
torque cut level.    UECD provides judgment when judgment delay timer comes up after torque 
gets lower than start torque.     
When torque measurement delay timer is set up, it starts functioning when detecting start torque 
or greater torque.    UECD cancels torque spike at the bolt seating point by suspending torque 
measurement until torque measurement start delay timer comes up, and then starts torque 
measurement.   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
４）ＵＥＰ－ＡＭＣレンチ  トルクコントロール角度モニタリング  コントロール方式：５ 
ＵＥＰ－ＡＭＣレンチ（角度センサ付きツール）のトルク制御・角度計測値モニタを行いま
す。 
スタートトルク以上のトルクが入力された時からトルク計測を開始しトルクＣＵＴ設定値に
達すると VALVE を出力しツールを停止します。判定出力はトルク計測値がスタートトルクを
下回ってから判定遅延タイマ後です。角度計測はスナッグトルク以上のトルクが入力された
時から開始されます。トルク計測スタート遅延タイマ設定時、タイマの動作中でも角度計測
は行います。 
 
 
 
 
 
 
 
 
 
 
 
 
判定遅延タイマ
スタートトルク 
開始 
終了 
締付トルク 
締付角度
 
トルク計測 
０ 
バルブ出力タイマ  バルブ出力 ON 
OFF 
トルク計測スタート 
遅延タイマ
角度ＳＮＵＧ 
角度波形 
トルクＣＵＴ 
Judgment delay timer 
Start torque 
Start 
End  Fastening torque 
Torque measurement
計
０
Peak hold (circled) 
CUT torque 
Valve output timer  Valve output 
ON 
OFF 
Torque measurement
start delay timer   
						

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12. Upper and Low limit judgment 
 
UECD provides judgment whether or not the detected torque, angle or pulse number is within 
upper and low limit.    Upper and low limit judgment is made against torque or pulse numbers until 
fastening is completed.    Upper and low limit of torque is set in [TORQUE LOW] and [TORQUE 
HIGH] in the BASIC SETTING screen.    Upper and low limit of pulse number is set in [PULSE 
LOW (pulse blow number lower limit)] and [PULSE HIGH (pulse blow number higher limit)] in the 
MODE SETTING screen.    
 
[Judgment]  
(1)    OK judgment when the measurement value is within upper and low limit.    (OK) 
・Front panel OK LED lamp lights in green.   
・UECD output TORQUE OK. 
・When 1 is set to ALARM BUZZER, UECD gives single sounding “Pi” for each fastener OK 
result, and double sounding “Pi-Pi” for COUNT OK.     
 
(2)    HIGH NOK judgment when the measurement is confirmed higher than upper limit.   
(TORQUE HIGH NOK) 
・Front panel HIGH LED lamp lights in red. 
・Buzzer sounds. 
・UECD outputs TORQUE NOK. 
・UECD outputs TORQUE HIGH.   
 
(3)    ANGLE HIGH NOK judgment when the angle measurement is confirmed higher than high 
limit. (ANGLE HIGH NOK) 
・ANGLE HIGH error message 
・Buzzer sounds.   
・UECD outputs TORQUE NOK.   
 
(4)    Judgment when pulse number is greater than pulse number upper limit.   
・Front panel displays [PLS.H] and [Torque measurement value] by turns.   
・Buzzer sounds. 
・UECD outputs TORQUE NOK.   
 
(5)    LOW NOK judgment when the measurement is confirmed lower than low limit.   
(TORQUE LOW NOK) 
*  Front panel LOW LED lamp lights in yellow.   
* Buzzer sounds.  
* UECD outputs TORQUE NOK.   
・UECD outputs TORQUE LOW NOK.   
 
 
 
 
 
  
						

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(6)    ANGLE LOW NOK judgment when the angle measurement is confirmed lower than low limit. 
(ANGLE LOW NOK) 
*  ANGLE HIGH error message 
* Buzzer sounds.  
* UECD outputs TORQUE NOK.   
 
 
(7)    Judgment when pulse number is less than pulse number low limit.    (PULSE LOW NOK) 
・Front panel displays [PLS.L.] and [Torque measurement value] by turns. 
・Buzzer sounds. 
・UECD outputs TORQUE NOK. 
 
 
  
						

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12.1. Torque change degree zone monitor 
 
 
 
  
 
 
 
 
 
        ０ 
 
 
 
 
 
 
Note 1: “IE error” stands for “Initial Error”.     
Note 2: Above is an example of linear torque change curve. 
 
1) Initial error [LO.E.] 
UECD provides the error when the time from start torque to cut torque is shorter than the time of 
initial error detect timer.     
［Setting value］ 
・Initial error detect select: 1 
・Initial error detect timer : 1 – 9999 [msec] 
［How to set］   
・Determine the setting value by monitoring the time from start torque to cut torque of the correct 
fastening.  
 
 
2) Cycle error [ CYL.E.] 
UECD provides the error when the time from start torque to cut torque is longer than the time of 
cycle error detect timer.     
［Setting value］ 
・Cycle error detect select : 1 
・Cycle error detect timer : 1 – 9999 [msec] 
［How to set］   
・Determine the setting value by monitoring the time from start torque to cut torque of the correct 
fastening. 
Start torque 
Torque 
Initial error
Cycle error 
Time 
IE error detect timer 
Cycle error detect timer 
Cut torque  
						

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13. Torque Sensor Wiring Diagnosis 
 
UECD is capable of checking torque sensor cable’s damage, break or short circuit.    The error 
detection is made when ZERO/CAL check is in action.
 
 
 
13.1. Error detection 
1)  ZERO check 
UECD checks how much the voltage of torque sensor will change from 0(V) under no load 
condition.  UECD detects ZERO error if the voltage variation (DPM display zero point) becomes 
out of the range of plus or minus 6% of the rated torque.   
 
 
 
2)  CAL check 
UECD checks whether sensor setting value in UECD is appropriate to the connected torque 
sensor’s wiring and the specifications.  UECD checks if the torque sensor output signal is within 
100±6% of the CAL value by applying simulative electric pressure to the torque sensor so as to 
put the torque sensor in the virtual condition under rated load strain.     
UECD detects CAL error if the torque sensor is not connected with UECD correctly, or its wiring 
and the specifications does not fit to UECD set up.
 
 
 
13.2. ZERO/CAL check perform timing 
・When self-diagnosis function is running by switching on UECD.     
・When 
 is pressed or RESET terminal is switched on.     
・When [F6 ZERO CAL] on the ZERO POINT ADJUSTMENT screen of the UEC-4800 setup 
software is pressed.     
 
When error is detected 
・ZERO error : [0.E.] and [Torque measurement value] are displayed alternately.     
・CAL error:    [CAL.E.] and [Torque measurement value] are displayed alternately.   
・Buzzer sounds.   
・TORQUE NOK terminal is switched on.    
 
 
 
  
						

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14. Auto ZERO 
 
This is a function to do correct torque value measurement by doing automatic correction measured 
torque variation due to torque sensor’s ZERO point deviation.    UECD memorizes ZERO point 
deviation confirmed by ZERO/CAL check, includes the deviation degree in torque sensor signal, 
and converts the adjusted torque signal to torque value.      This auto ZERO will not function when 
ZERO/CAL error occurs.    
 
Examples of AUTO ZERO 
1)    When ZERO/CAL check detects plus (+) side deviation.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2)    When ZERO/CAL check detects (-) side deviation  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Auto ZERO execute timing 
UECD executes AUTO ZERO after ZERO/CAL check.     
・At the time of self-diagnosis when UECD is switched on.   
・When pressing 
, or RESET TERMINAL is switched on.   
・When START is switched on   
Auto ZERO execute point 
ＯＮ 
ＯＦＦ 
Absolute 0 
＋ 
－ 
Torque measurement 
Absolute 
Auto ZERO execute point 
ON
OFF 
Torque increase 
(measurement) Torque sensor 
Output signal 
Absolute zero 
＋ 
－ 
Torque measurement 
Absolute torque 
Torque increase 
(measurement) Torque sensor 
Output signal  
						

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15. Torque waveform measuring procedure 
 
Following explains how to measure the torque waveform by using the memory hicorder 
or memory scoop.   
 
1)  Make sure that the setting values are correctly set up.  Check especially that the 
specifications of the torque sensor connected to the UECD-4800 agrees to the setting value of the 
torque sensor, and the CAL value is set up correctly.     
 
2)    Connect the waveform measurement equipment to UECD-4800.     
 
 
 
 
 
 
 
 
 
 
 
Note)      UK-PLUG’s red wire : torque signal   
UK-PLUG’s black wire : 0V (GND) 
 
 
3)  Press 
 to have the UECD-4800 measure CAL waveform height (rated torque applied 
electric pressure).    UECD-4800 makes the CAL check.     
 
4)    Confirm CAL waveform height, and then set and adjust waveform measurement equipment.       
 
5)    Perform torque waveform measurement. 
 
 
JIS C6560 Small Head Plug φ3.5x15  Memory HiRecorder 
BLACK RED  
						

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16.  ANALOG OUTPUT terminal 
 
UECD outputs the analog torque signal voltage in real time by having the torque sensor output 
signal voltage amplified by 1000 times, filtered and attenuated.    
 
1)  Torque sensor output voltage specification table 
Following is output voltage (x V) when rated load torque is applied to torque sensors.   
 
 
Torque sensor specifications ANALOG output voltage ( x V) 
UEP-MC Magnetostrictive Sensor  DC 1.5V 
 
2)    How to convert analog output voltage to torque value 
 
Output voltage when strained by fastening 
(⊿Ｖ) 
    Torque Value = 
Output voltage when applied rated load 
(1.5V)  × Rated torque value 
 
3)  Analog output terminal specifications 
 
 
 
 
 
 
 
 
 
 
 
4)  Analog output terminal  
Plug size: JIS C6560 single small head plug ø3.5x15 
 
 
 
 
７４１
－ ＋ ３
２
４１５６３３０Ω ７＋１５Ｖ
－１５Ｖ１ モニタ
２ ＧＮＤ
ＵＥＣ－４４００UECD-4800 
Monitor  
						

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17. Error 
17.1. Error message & contents 
 
ZERO Error: [   ] and [NG measurements] are displayed alternately. 
・When more that ±6％  deviation off from rated value is detected. 
 
CAL Error: [ 
  ] and [NG measurements] are displayed alternately.  
・When more than 100±6％  deviation off from rated value is detected 
 
Buffer Full Error: [ 
  ] and [Torque measurements] are displayed alternately. 
・This error is fired when more angle data to a buffer than the memory unit can accommodate is 
flowed into it (buffer overflow).  The memory capacity is programmable on mode settings of 
“WAVEFORM MEMORY FUNCTION SELECT”.    If it is set to either 1 or 4, this message does not 
come up.     
 
Setting Error: [ 
  ] is displayed. 
・When not settable setting value is input.    When the setting value is out of the setting range or 
interlock value is input.   
 
Driver Error:[
  ］is displayed. 
・This error is fired when any error related to driver is detected.    
 
Driver Error:[  ］is displayed. 
・When not settable setting value is input.    When the setting value is out of the setting range or 
interlock value is input.
 
 
Pulse Number LOW NOK: [ 
  ] and [Torque measurements] are displayed alternately. 
・When the pulse number is less than pulse number low limit. 
 
Pulse Number HIGH NOK: [ 
  ] and [Torque measurements] are displayed alternately. 
・When the pulse number is over than pulse number high limit. 
 
Initial Error: [ 
  ] and [NG measurements] are displayed alternately. 
・When fastening torque reaches CUT torque before initial error detection timer comes up.   
 
Cycle Error: [ 
  ] and [NG measurements] are displayed alternately. 
・When fastening torque does not reach CUT torque before cycle error detection timer comes up.   
 
Fastening Suspension Error: [
 ] is displayed.  
・When the fastening is suspended before the torque reaches CUT torque.     
 
Start Torque Error: [ 
  ] is displayed. 
・Start torque error detect timer starts functioning when start terminal is switched on. When the 
torque does not reach start torque before this timer comes up.   
 
Cycle Over Error: [ 
  ] is displayed. 
     ・Cycle over error detect timer starts functioning when start terminal is switched on.    When the 
fastening operation (judgment) is not completed before this timer comes up.   
 
Warning Count Number Error: [ 
  ] is displayed. 
・When the total fastening cycle reaches the warning cycle setting value.     
 
Warning Pulse Number Error: [ 
  ] is displayed. 
・When the total fastening pulse number reaches the warning pulse number setting value.    
 
Repair Count Number Error: [ 
  ] is displayed. 
・When the total fastening cycle reached the repair number setting value.      
						

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Repair Pulse Number Error: [ 
 ] is displayed. 
・When the total pulse number reaches the repair pulse number setting value.    
 
Warning Memory Error: [ 
  ] is displayed. 
・When the memory remaining volume gets less than -10 from the maximum memory data.    
 
ROM Error: [ 
  ] is displayed.    
・When ROM of board is broken down or causes malfunction for some reasons.         
 
RAM Error: [ 
  ] is displayed. 
・When RAM of board is broken down or causes malfunction for some reasons.   
 
A/D Error: [ 
  ] is displayed. 
・When A/D of board is broken down or causes malfunction for some reasons.   
 
SUM Check Error: [ 
  ] is displayed. 
・When the setting data memorized in RAM have error.   
 
Blown Fuse 
・When the AC fuse (Refer to 4.2 Rear panel ②) is blown, UECD cannot be powered on.     
・When the DC24V fuse on the board inside UECD is blown, DC24V won’t be outputted.   
 
Low Voltage: [ ] is displayed. 
・The UECD output is shut down when the DC voltage of converter (*1) is under 90V.    When it is 
under 60V, the control circuit is reset.     
 
Over Current: [  ] is displayed. 
・The UECD is protected when the built-in converter outputs more current than rated. 
 
 
Regenerative Over Voltage: [    ] is displayed. 
・This error is fired when the built-in converter generates more DC voltage than rated.    The UECD 
is protected when AC100V UECD generates more than DC200V.   
 
 
Restart Prevention: [  ] is displayed. 
・When a proper amount of power is supplied again to the UECD after the low voltage is corrected, 
this feature causes the tool run signal to be cancelled for safety.  Note that this feature does not 
work when the control circuit is reset. 
  
 
Excessive Load (thermal): [  ] is displayed. 
・When more motor current flows in the UECD than necessary, the self protection features protects 
the UECD from the excessive load. 
 
 
Sensor Error: [    ] is displayed. 
・The self protection features are triggered when the CS sensor error is detected. 
 
 
CPU Error: [    ] is displayed. 
・The self protection features are triggered when the abnormality or error of CPU is detected. 
 
 
Input Signal Error: [    ] is displayed. 
・This error is detected when the tool receives the tool rotation change signal while it is running. 
 
 
(1) Converter: This is one of the UECD components and converts the AC commercial voltage to DC 
voltage.   Then, it converts the DC voltage to the AC voltage with specif ied pulsing frequency.   
The rectif ier circuit changing the AC input to DC output is called converter.