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7. PARAMETER SETTING

VM-5S

-47-

7-6 TRIGGER

LEVEL

AND HYSTERESIS

A pulse-like analog signal is output by a sensor inside the VM-5S and compared with a standard

DC voltage to shape the waveform. The input signal from the sensor or the shaped pulse signal can

be observed at the BNC connector on the monitor front panel and buffer output terminal on the

relay panel (VM-5G Single Unit Instrument Rack, VM-5Y Relay Module Unit).

The level of the above standard voltage is different in the ON and OFF state to prevent

malfunctioning due to noise. It is referred to as the trigger level set voltage and the difference

between ON and OFF voltage, as hysteresis. If these voltages are set to a level so as to traverse the

waveform, a shaped pulse is produced as shown in Fig. 7-6-1 with which the rotation speed can be

measured. However,

if they are set to the level shown in Fig. 7-6-2, this is interpreted as

there being no tachometer output because a shaped pulse is not produced. Also note that

measuring error will be caused if the hysteresis is smaller than the noise contained in the

input waveform as shown in Fig. 7-6-3.

For these reasons, setting of the above levels is of great

importance.

Fig. 7-6-1

Trigger Level
Setting Voltage

Hysteresis

Monitor Output

Pulse Output

-20V

Содержание VM-5

Страница 1: ...MANUAL NO 29602E4 7 Published in Apr 1996 Revised in Feb 2012 VM 5 SERIES MONITOR MODEL VM 5S DUAL TACHOMETER INSTRUCTION MANUAL ...

Страница 2: ...ty Conventions before operating the equipment The safety symbols explained in this section are placed outside the left margin next to the text to which they apply This unit is designed for use by specialists or persons thoroughly familiar with the field Make sure that the end user receives the Instruction Manual delivered with this unit Before use When the unit is received inspect it for damage su...

Страница 3: ... result in minor or moderate injury It may also be used to permit for property damage only accidents Serious injury refers to such injuries as loss of eyesight injuries burns due to heat or cold electric shock fractures and poisoning that have permanent aftereffects and require hospitalization or long term outpatient treatment Moderate or minor injury refers to such injuries as burns and electric ...

Страница 4: ...em A printed circuit board and electronic products may receive damage with the static electricity of a human body Touch the metal part once and discharge your static electricity before dealing with it Will cause damage and malfunction of the instrument Do not touch parts and soldered surfaces of the monitor unit Will cause damage and malfunction of the instrument The monitor unit is a precision in...

Страница 5: ... connecting the monitor unit and these devices install a surge killer Firmly tighten each screw used for mounting each unit In additional always close the face plate for the monitor unit then fix it with knurled screws In order to prevent the system from its malfunction when the monitor unit fails provide the systematic interlock function Do not wire input signal cables in parallel with control an...

Страница 6: ...NPUT ABNORMAL ALARM 19 5 4 FIRSTOUT DISPLAY 20 5 5 BYPASS FUNCTION 20 5 6 POWER ON TIMER MODE 20 5 7 OK ALARM SPEED RELAY MODE 21 5 8 OK ALARM SPEED RELAY RESET MODE 21 5 9 MONITOR OUTPUT PULSE OUTPUT 21 5 10 RECORDER OUTPUT 21 5 11 SELF DIAGNOSTIC FUNCTION 21 5 12 POWER SEQUENCE 22 5 13 TIMED OK CHANNEL DEFEAT 22 5 14 TRIGGER FUNCTION 22 5 15 PEAK HOLD FUNCTION 22 6 DESCRIPTION OF PARTS 6 1 DESCR...

Страница 7: ...UIPMENT 61 9 2 VERIFICATION OF OK INPUT ABNORMAL ALARM OPERATION 62 9 3 VERIFICATION OF SPEED RELAY OPERATION 64 9 4 VERIFICATION OF MEASURED VALUE AND RECORDER OUTPUT 66 9 5 ADJUSTMENT OF MEASURED VALUE AND RECORDER OUTPUT ZERO SPAN 68 9 6 REPLACEMENT OF ALUMINUM ELECTROLYTIC CAPACITOR 71 9 7 REPLACEMENT OF LCD UNIT 72 9 8 LCD CONTRAST ADJUSTMENT 73 9 9 LCD BACKLIGHT ADJUSTMENT 74 10 TROUBLESHOOT...

Страница 8: ...nitor Be sure to discharge the charged electric load before connecting the cable to the transducer and monitor If this caution is not adhered to the transducer and monitor could be damaged When a zero speed system is designed using this VM 5S Dual Tachometer avoid performing control only by using SHINKAWA system and always add other condition to this system by using other kind of detection system ...

Страница 9: ...pecified otherwise ABNOR ALARM INDICATOR OK green LED BYPASS INDICATOR BYPASS red LED TRANSDUCER INPUT VK RD FK Series VE Series MS Series VC Series Number of input points 2 points INPUT IMPEDANCE Approx 5kΩ INPUT VOLTAGE Min 2Vpk pk Max 100Vpk pk MIN PULSE WIDTH Approx 50µsec MIN INDICATED FREQUENCY Lower of 1Hz or under speed setting MAX INPUT FREQUENCY 10kHz NO OF INPUT PULSE 1 to 120 pulse SPE...

Страница 10: ...lay 4 lamp 12 Slide frame 5 Speed relay 3 lamp 13 Main board frame 6 OK lamp 14 Main board 7 BYPASS lamp 15 DIN connector 64pin 8 Monitor output connector Finish Face plate Munsell N 4 0 equiv Mass Max 0 7kg Max 1 6lb REF Unless otherwise specified units are in millimeters mm and grams g Reference dimensions in parentheses are in inches in and pounds lb ...

Страница 11: ...s per API st d 670 Normal Silver plated braid Recommended Copper tape shielded Core wire Soft copper wire Use conduit pipe cable rack for wiring INSTRUMENT CABLE Pair shielded standard 3 wire Good Although vibration and displacement signals can be transmitted in one instrument cable use separate cables because a high vibration signal exerts injurious influence over other displacement and vibration...

Страница 12: ...L RD AND VM 5G OR VM 5Y1 2 3 VK 202A or RD input TIIS Ex ia IIC T6 Safety Barrier Terminals Monitor Terminals Hazardous area Safe area 1ch 2ch Signal name Wire no No No Terminal name No Terminal name No Output A 4 2 IN A1 IN B1 Common Shield B D Earth Earth COM A2 COM B2 Power C 3 1 PWR A3 PWR B3 ...

Страница 13: ...p the unshielded portion of cables at connecting parts as short as possible less than 100mm recommended Connect the shielded wires to the COM terminal 5 Use a 3 core shielded cable with AWG No 14 to No 18 gage stranded conductors for wiring between the VK driver and the safety barrier and between the safety barrier and the monitor max length 500 m max length 1 640ft REF Cw 0 134µF Lw 0 71mH In the...

Страница 14: ...nput RIIS Ex ia IIC T4 Safety Barrier Terminals Monitor Terminals Hazardous area Safe area 1ch 2ch Signal name Wire no No No Terminal name No Terminal name No OUT A 4 2 IN A1 IN B1 COM B Earth Earth COM A2 COM B2 24V C 3 1 PWR A3 PWR B3 Shield COM D Earth Earth COM A2 COM B2 ...

Страница 15: ...n of cables at connecting parts as short as possible less than 100mm recommended Connect the shielded wires to the COM terminal 4 Use a 3 core shielded cable with AWG No 16 to No 18 gage stranded conductors for wiring between the FK driver and the safety barrier and between the safety barrier and the monitor max length 500 m max length 1 640ft REF Cw 0 09µF Lw 1 84mH In the case of other Intrinsic...

Страница 16: ...IC SAFETY EXPLOSION PROOF CONSTRUCTION 4 2 1 MODEL VK MODEL RD AND VM 5G OR VM 5Y1 2 3 Connected terminals CH1 CH2 Signal name Wire no Terminal name No Terminal name No Output A IN A1 IN B1 Common Shield B D COM A2 COM B2 Power C PWR A3 PWR B3 ...

Страница 17: ...hout armor 30 mm 1 18 in REF With armor 50 mm 1 97 in REF Allowable tension 98 1N 10 kgf REF 2 Connect the shielded wires to the COM terminal Keep the unshielded portion of cables at connecting parts as short as possible less than 100mm recommended 3 Use a 3 core shielded cable with AWG No 14 to No 18 gage stranded conductors for wiring between the VK driver and the monitor Do not wire the cables ...

Страница 18: ...ON VM 5S 11 4 2 2 MODEL FK AND VM 5G OR VM 5Y1 2 3 Connected terminals CH1 CH2 Signal name Wire no Terminal name No Terminal name No OUT A IN A1 IN B1 COM B COM A2 COM B2 24V C PWR A3 PWR B3 Shield COM D COM A2 COM B2 ...

Страница 19: ...wable tension 98 1N 10 kgf REF 2 Connect the shielded wires to the COM terminal Keep the unshielded portion of cables at connecting parts as short as possible less than 100mm recommended 3 Use a 3 core shielded cable with AWG No 16 to No 18 gage stranded conductors for wiring between the VK driver and the monitor Do not wire the cables together in high tension ducts 4 Remove the insulation so ther...

Страница 20: ...4 INTERCONNECTION VM 5S 13 4 2 3 MODEL VE AND VM 5G SINGLE UNIT INSTRUMENT RACK Make sure to turn the power off before wiring work to prevent accidents due to electric shock Warning ...

Страница 21: ...4 INTERCONNECTION VM 5S 14 4 2 4 MODEL VE AND VM 5Y1 2 3 RELAY MODULE UNIT Make sure to turn the power off before wiring work to prevent accidents due to electric shock Warning ...

Страница 22: ...4 INTERCONNECTION VM 5S 15 4 2 5 MODEL MS AND VM 5G SINGLE UNIT INSTRUMENT RACK ...

Страница 23: ...onnecting parts as short as possible less than 100mm recommended 3 Do not connect the shielded wires to the connector shell In the case of the input signal from a magnetic pickup the output voltage pk pk of the magnetic pickup varies depending on the size of gear teeth the set gap rotation speed etc and under certain conditions may become high voltage Therefore stay within a range in which the out...

Страница 24: ...4 INTERCONNECTION VM 5S 17 4 2 6 MODEL MS AND VM 5Y1 2 3 RELAY MODULE UNIT ...

Страница 25: ...onnecting parts as short as possible less than 100mm recommended 3 Do not connect the shielded wires to the connector shell In the case of the input signal from a magnetic pickup the output voltage pk pk of the magnetic pickup varies depending on the size of gear teeth the set gap rotation speed etc and under certain conditions may become high voltage Therefore stay within a range in which the out...

Страница 26: ...s 5 3 OK INPUT ABNORMAL ALARM When the level of the signal from the transducer becomes abnormal OK alarm outputs and LCD is flashing This condition is maintained by the off delay timer for approx 15 sec after the level of the transducer signal has returned to normal Input type Detectable input abnormal conditions VK Transducer Sensor is short circuited Extension cable is short circuited Sensor set...

Страница 27: ...D RELAY SR2 SR4 and BYPASS lamps are flashing This function is activated by means of the DANGER BYPASS switch For details refer to 7 PARAMETER SETTING on page 26 If mounted in the VM 5H3 or VM 5W1 Instrument Rack all units in the instrument rack can be set collectively to DANGER BYPASS For details refer to VM 5H3 or VM 5W1 Instrument Rack instruction manual 5 5 2 CH1 BYPASS SPEED RELAY1 2 output O...

Страница 28: ...r each alarm output that holds the alarm condition until reset by setting RES key inside of the front panel or by shorting between RES and COM terminal OK alarm SPEED RELAY reset is not possible until the output condition has been released For details refer to 7 PARAMETER SETTING on page 26 5 9 MONITOR OUTPUT PULSE OUTPUT The input signal from the sensor or the internally shaped pulse signal is ou...

Страница 29: ... or more monitors should not be allowed 5 13 TIMED OK CHANNEL DEFEAT When OK alarm is output SPEED RELAY output display and recorder output are disabled For details refer to 7 PARAMETER SETTING on page 26 5 14 TRIGGER FUNCTION It is possible to select between automatic setting of the optimum trigger for the input waveform and manual trigger default The trigger mode can be selected by means of the ...

Страница 30: ...ame No Name 1 LCD display 9 Name plate 2 Speed relay 2 lamp 10 Tag Ser No plate 3 Speed relay 1 lamp 11 LCD board 4 Speed relay 4 lamp 12 Slide frame 5 Speed relay 3 lamp 13 Main board frame 6 OK lamp 14 Main board 7 BYPASS lamp 15 DIN connector 64pin 8 Monitor output connector ...

Страница 31: ...R bypass and lights during CHANNEL bypass 8 Monitor output connector This is a BNC output connector for connection of an oscilloscope to observe the waveform or for output to other devices such as an analyzer The input signals from the transducers or the internally shaped pulse signals are output through a buffer amplifier Make sure to insulate the monitor output against earth If not insulated a 2...

Страница 32: ... CH2 measured value bar graph 3 CH1 sensor set gap voltage value VK FK RD input specification 8 CH2 sensor set gap voltage value VK FK RD input specification 4 SPEED RELAY 2 set value 9 SPEED RELAY 4 set value 5 SPEED RELAY 1 set value 10 SPEED RELAY 3 set value LCD display MEAS2 MEAS1 4 8 12 16 MEAS1 MEAS2 0 0 20 20 40 40 60 60 80 80 100 100 1 4 5 3 2 7 8 10 9 6 20 V ...

Страница 33: ...loosen the knurled screw at the top and bottom of face plate Should screw manually Do not use any tools 2 Pull out the face plate Do not pull out beyond the depth of the slide frame Make sure not to touch internal chassis Failure to turn off the power before pulling the monitor unit out of the rack will result in serious damage and accidents Prohibition Prohibition Prohibition Caution ...

Страница 34: ...toward the right Make sure not to touch internal printed circuit board 4 The keys and DIP switches for setting the parameters are located inside the unit 1 2 3 4 5 6 DIP switches Specification set keys ON SET RES CHK 1BY 2BY DBY MS1 MS2 N A Prohibition ...

Страница 35: ...ing set values with the UP and DOWN keys For example if the CHECK key is pressed while the value 0 1 appears on the MEAS 2 LED display a value corresponding to the measurement range 0 1 can be set Each operation of the CHECK key will multiply the multiplier by 10 When the CHECK key is pressed during normal monitoring the monitor will go through self diagnosis in the following sequence 1 LCD LED di...

Страница 36: ...1 MODE SELECT1 Switch normally OFF Set normally to OFF Parameter setting mode is disabled 5 MS2 MODE SELECT2 Switch ON For setting the OK alarm SPEED RELAY reset mode OK alarm SPEED RELAY delay time OK alarm SPEED RELAY mode first out display timed OK channel defeat and peak hold Also enables setting the address when used in combination with the VM 5H3 or 5W1 Instrument Rack and VM 5P1 2 Communica...

Страница 37: ...n with the VM 5H3 or VM 5W1 Instrument Rack and VM 5P1 2 Communication Phase Marker Unit or VM 53 Dual Communication Unit is enabled 7 4 2 MODE SELECT SWITCH SETTING 1 1BY CH1 BYPASS S W 2 2BY CH2 BYPASS S W 3 DBY DANGER BYPASS S W 4 MS1 MODE SELECT1 S W normally OFF 5 MS2 MODE SELECT2 S W 6 N A not available DIP switches Confirm that the MS1 MODE SELECT1 switch is OFF Place the MS2 MODE SELECT2 s...

Страница 38: ...ay time set SPEED RELAY 2 reset mode set SPEED RELAY 4 reset mode set SPEED RELAY 1 reset mode set SPEED RELAY 3 reset mode set CH1 OK alarm reset mode set CH2 OK alarm reset mode set SPEED RELAY 2 delay time set SPEED RELAY 4 delay time set SPEED RELAY 1 delay time set SPEED RELAY 3 delay time set CH1 OK alarm delay time set 2 PARAMETER SETTING 1 ...

Страница 39: ... mode set SPEED RELAY 1 relay mode set SPEED RELAY 3 relay mode set CH1 OK alarm relay mode set Timed OK channel defeat set Address set First out display set 1 2 Display only if used in combination with the VM 5Y3 4 5 6 Relay Module Unit CH2 OK alarm relay mode set Peak hold set ...

Страница 40: ...et CH1 OK alarm reset CH2 OK alarm reset SPEED RELAY 2 delay time SPEED RELAY 4 delay time SPEED RELAY 1 delay time SPEED RELAY 3 delay time CH1 OK alarm delay time CH2 OK alarm delay time SPEED RELAY 2 relay mode SPEED RELAY 4 relay mode SPEED RELAY 1 relay mode SPEED RELAY 3 relay mode CH1 OK alarm relay mode CH2 OK alarm relay mode First out display Timed OK channel defeat Peak hold function Ad...

Страница 41: ...TCH self hold NON LATCH auto reset Alarm delay time None ENERGIZED ALARM Normally DE ENERGIZED DE ENERGIZED ALARM Normally ENERGIZED OFF ON Alarm delay time 1 sec Alarm delay time 3 sec Alarm delay time 6 sec LCD display MEAS2 MEAS1 4 8 12 16 0 0 20 20 40 40 60 60 80 80 100 100 20 V MEAS1 MEAS2 MEAS 2 ...

Страница 42: ... DOWN key Select latch or non latch with UP or DOWN key 5 Press SET key Present status Specify SPEED RELAY 1 reset mode 6 Press UP or DOWN key Select latch or non latch with UP or DOWN key 7 Press SET key Present status Specify SPEED RELAY 3 reset mode 8 Press UP or DOWN key Select latch or non latch with UP or DOWN key 9 Press SET key Present status Specify CH1 OK input abnormal alarm reset mode ...

Страница 43: ...key Select NON none with UP or DOWN key 19 Press SET key Present status Specify SPEED RELAY 3 delay time 20 Press UP or DOWN key Select NON none with UP or DOWN key 21 Press SET key Present status Specify CH1 OK input abnormal alarm delay time 22 Press UP or DOWN key Select NON none with UP or DOWN key 23 Press SET key Present status Specify CH2 OK input abnormal alarm delay time 24 Press UP or DO...

Страница 44: ...ERGIZED or DEENERGIZED with UP or DOWN key 31 Press SET key Present status Specify SPEED RELAY 3 relay mode 32 Press UP or DOWN key Select ENERGIZED or DEENERGIZED with UP or DOWN key 33 Press SET key Present status Specify CH1 OK input abnormal alarm relay mode 34 Press UP or DOWN key Select ENERGIZED or DEENERGIZED with UP or DOWN key 35 Press SET key Present status Specify CH2 OK input abnormal...

Страница 45: ...lect ON enable or OFF disable with UP or DOWN key 41 Press SET key Present status Specify address 42 Press UP or DOWN key Select address between 1 and 10 with UP or DOWN key 43 Press SET key Present status Return to procedure 1 Make sure to assign a unique address for use with the VM 5P1 2 Communication Phase Marker Unit or VM 53 Dual Communication Unit and VM 5H3 or VM 5W1 Instrument Rack Same ad...

Страница 46: ...ured value and recorder output zero span refer to page 62 MAINTENANCE 7 5 2 MODE SELECT SWITCH SETTING 1 1BY CH1 BYPASS S W 2 2BY CH2 BYPASS S W 3 DBY DANGER BYPASS S W 4 MS1 MODE SELECT1 S W normally OFF 5 MS2 MODE SELECT2 S W 6 N A not available DIP switches Confirm that the MS1 MODE SELECT1 switch is OFF Place the MS2 MODE SELECT2 switch in OFF position Setting other than the above are not enab...

Страница 47: ...ive SPEED RELAY 3 set Set range 0 to 110 of monitor range or ineffective CH1 trigger level set Adjustment range 0 0 to 24 0V Absolute value displayed CH2 trigger level set Adjustment range 0 0 to 24 0V Absolute value displayed SPEED RELAY 2 set Set range 0 to 110 of monitor range or ineffective 5 PARAMETER SETTING 2 Refer to Maintenance for more detail The OVER SPEED type has priority in the setti...

Страница 48: ...justment Adjustment range 5 of monitor range CH1 recorder output zero adjustment Adjustment range 5 of monitor range CH2 recorder output zero adjustment Adjustment range 5 of monitor range CH1 recorder output span adjustment Adjustment range 5 of monitor range CH2 recorder output span adjustment Adjustment range 5 of monitor range ...

Страница 49: ...LAY 1 set over speed SPEED RELAY 3 set over speed SPEED RELAY 2 set under speed SPEED RELAY 4 set under speed SPEED RELAY 1 set under speed SPEED RELAY 3 set under speed CH1 trigger level set CH2 trigger level set CH1 measured value span adjustment CH2 measured value span adjustment CH1 recorder output zero adjustment CH2 recorder output zero adjustment CH1 recorder output span adjustment CH2 reco...

Страница 50: ...ter Display Parameter status Disable Error The limit value specified for over speed type SPEED RELAY set value must be higher than that for under speed type SPEED RELAY set value LCD display MEAS2 MEAS1 4 8 12 16 0 0 20 20 40 40 60 60 80 80 100 100 20 V MEAS1 MEAS2 MEAS 2 ...

Страница 51: ...AY 2 2 Press CHECK and UP or DOWN key 0 to 110 of monitor range Disabled Fix digit with CHECK key and specify value with UP or DOWN key 3 Press SET key Present status Specify SPEED RELAY 4 4 Press CHECK and UP or DOWN key 0 to 110 of monitor range Disabled Fix digit with CHECK key and specify value with UP or DOWN key 5 Press SET key Present status Specify SPEED RELAY 1 6 Press CHECK and UP or DOW...

Страница 52: ...0 to 24 0V Absolute value displayed Fix digit with CHECK key and specify value with UP or DOWN key 13 Press SET key Present measured value Specify CH1 measured value span adjustment 14 Press CHECK and UP or DOWN key Present measured value Fix digit with CHECK key and specify value with UP or DOWN key 15 Press SET key Present measured value Specify CH2 measured value span adjustment 16 Press CHECK ...

Страница 53: ...lue Set gain with CHECK key and adjust recorder output with UP or DOWN key 21 Press SET key Present measured value Specify CH1 recorder output span adjustment 22 Press CHECK and UP or DOWN key Present measured value Set gain with CHECK key and adjust recorder output with UP or DOWN key 23 Press SET key Present measured value Specify CH2 recorder output span adjustment 24 Press CHECK and UP or DOWN...

Страница 54: ... It is referred to as the trigger level set voltage and the difference between ON and OFF voltage as hysteresis If these voltages are set to a level so as to traverse the waveform a shaped pulse is produced as shown in Fig 7 6 1 with which the rotation speed can be measured However if they are set to the level shown in Fig 7 6 2 this is interpreted as there being no tachometer output because a sha...

Страница 55: ...ER SETTING VM 5S 48 Fig 7 6 2 Fig 7 6 3 Trigger Level Setting Voltage Hysteresis 0V 5V Monitor Output Pulse Output 20V 0V t t Trigger Level Setting Voltage Hysteresis 0V 5V Monitor Output Pulse Output 20V 0V t t ...

Страница 56: ...detection signal becomes so small that detection error may result 1 Gear 2 Projection To detect a projection gear provide surface A of the projection with a concentric curve Do not make it flat 3 Key groove 4 Target for rotor speed detection Input VK 202A FK 202F RD 05A VK 302P A 6 8 B 7 8 C 2 5 2 5 Dimension of target Recommended mm D 16 20 Set gap Recommended mm 1 0 to 1 5 1 0 to 1 5 D A B C D A...

Страница 57: ...ar projection or circular hole if used as a target may easily cause a pitch error or measurement error due to shaft eccentricity displacement in the axial direction etc which are not appropriate for rotor speed detection Install the sensor so that it is located at the center of the target width direction A gear with uneven tooth gap can cause the monitor to malfunction Therefore make sure to use a...

Страница 58: ...teeth type etc Be sure to check that pulses are detected both at low speed turning and rated speed Duty ratio A A B 100 7 8 2 MANUAL TRIGGER MODE The trigger level can be set manually If the input specification of the eddy current type transducer is as listed below select manual trigger mode If observed target does not meet the requirements recommended in Fig 7 7 Input duty ratio is less than 10 o...

Страница 59: ...itch to the left for Auto Trigger or to the right for Manual Trigger Do not touch any parts not specifically mentioned 3 After verifying the trigger mode selected reinstall the monitor unit in the rack Refer to the instruction manual of the instrument rack in which the monitor is installed Mandatory Mandatory VM 5 TRIGGER CARD J1 CH1 HYS SET 0 1V 0 2V 0 5V 1 0V CH1 TRG MODE AUTO MAN VM 5 TRIGGER C...

Страница 60: ...e to record the waveform over the full speed range 6 Determine the optimum trigger level value from the recorded waveform Example With an eddy current type transducer VK FK RD If the input waveform changes as shown below over the full speed range the optimum value for the trigger level is 18V 7 Display Trigger Level Set referring to 7 5 PARAMETER SETTING 2 on page 39 8 Fix the digit with the CHECK...

Страница 61: ... have to set the hysteresis make sure that the following conditions are met Otherwise correct measurement is not possible Condition 1 a hysteresis set value 2V Condition 2 hysteresis set value b If these conditions cannot be met the following measures must be taken To meet Condition 1 Select a narrow set gap and a high input signal amplitude Select a larger shaped speed detection target and a high...

Страница 62: ...rd Connect the jumper in the desired position marked 0 1V 0 2V 0 5V and 1 0V Do not touch any parts not specifically mentioned 3 After verifying the set value reinstall the monitor unit in the rack Refer to the instruction manual of the instrument rack in which the monitor is installed Mandatory VM 5 TRIGGER CARD J1 CH1 HYS SET 0 1V 0 2V 0 5V 1 0V VM 5 TRIGGER CARD J3 CH2 HYS SET 0 1V 0 2V 0 5V 1 ...

Страница 63: ...ct the jumper to obtain the desired output PUL or BUF PUL The internally shaped pulse signal is output through a buffer amplifier BUF The input signal from the sensor is output through a buffer amplifier Do not touch any parts not specifically mentioned 3 After verifying the set value reinstall the monitor unit in the rack Refer to the instruction manual of the instrument rack in which the monitor...

Страница 64: ... monitor range is 10 000 rpm hysteresis 20 rpm 1 Relay operates when the rotation speed exceeds the set value speed relay set value 5 000 rpm Overspeed type 2 Relay operates when rotation speed drops below the set value speed relay set value 5 000 rpm Underspeed type OFF 4980rpm 5000rpm ON Speed relay contact value Relay output Measured value Speed relay hysteresis OFF 5000rpm 5020rpm ON Measured ...

Страница 65: ...8 FUNCTIONAL DIAGRAM VM 5S 58 8 1 BLOCK DIAGRAM ...

Страница 66: ... Rack VM 5Y Relay Module Unit 6 Integrator Enabled for VM 5T 5D 5N 5E 5A 5L 5J and 5C Integrates the PWM pulse width modulation signal and converts it to a DC voltage proportional to the measured value 7 Zero shift Enabled for VM 5T 5D 5N 5E 5A 5L and 5J For VM 5C only enabled on CH2 The input signal is zero shifted by the DC voltage output from the integrator 8 Programmable Gain Amplifier Convert...

Страница 67: ...e LCD cards and alarm relays 17 Integrator Integrates the PWM pulse width modulation signal and converts it to a DC voltage proportional to the measured value 18 Output amplifier Converts the output to the 1 to 5VDC or 4 to 20mA signal required for the recorder etc 19 Filter card option Available as option if a still sharper filter performance is required 20 Trigger card Enabled for VM 5C 5 S and ...

Страница 68: ... Agilent Technologies 3466A or equivalent Two channel synthesizer Yokogawa FG 120 or equivalent For alarm output wiring proceed as described in the instruction manuals for the VM 5G Single Unit Instrument Rack and VM 5Y Relay Module Unit used in combination with this monitor unit Make sure to turn the power off before wiring work to prevent accidents due to electric shock Mandatory Warning ...

Страница 69: ...MENT RACK Connect a input transducer to the input terminal of the VM 5G Single Unit Instrument Rack and check the circuit of OK ALERT contact points Connect to the input output terminals of the channel under operation test Refer to 4 INTERCONNECTION on page 4 Mandatory Warning A8 NC A9 SR2 A10 NO A11 NC A12 SR1 A13 NO A14 NC A15 OK A16 NO A17 L1 A18 L2 A19 FG B8 NC B9 SR4 B10 NO B11 NC B12 SR3 B13...

Страница 70: ... the end of the POWER ON TIMER period At the same time test the OK contact points for continuity 2 Verification of Alarm Operation Output Disconnect the signal transmission cable of the input transducer from the output terminal block Verify that the OK lamp lights at the end of the POWER ON TIMER period At the same time test the OK contact points for continuity ...

Страница 71: ...a Synthesizer to the input output terminals of the VM 5G Single Unit Instrument Rack and test for connection between the SPEED RELAY contact output terminals Connect to the SPEED RELAY contact output terminals under operation test Mandatory Warning A8 NC A9 SR2 A10 NO A11 NC A12 SR1 A13 NO A14 NC A15 OK A16 NO A17 L1 A18 L2 A19 FG B8 NC B9 SR4 B10 NO B11 NC B12 SR3 B13 NO B14 SEQ B15 COM B16 P S B...

Страница 72: ...full scale of the monitor range to ensure that SPEED RELAY is not output 3 OK input abnormal alarm Reset Input the reference voltage from the synthesizer Reset more than 15 sec after input of the reference voltage to release OK input abnormal alarm in self holding alarm reset mode In auto reset mode OK is reset automatically after approx 15 sec 4 Verification of SPEED RELAY Operation Gradually var...

Страница 73: ... during operation test 9 4 1 INTERCONNECTION ex VM 5G SINGLE UNIT INSTRUMENT RACK Connect a Synthesizer to the input output terminals of the VM 5G Single Unit Instrument Rack and measure the recorder output with a DMM Connect to the input output terminals of the channel under operation test Mandatory Warning A8 NC A9 SR2 A10 NO A11 NC A12 SR1 A13 NO A14 NC A15 OK A16 NO A17 L1 A18 L2 A19 FG B8 NC ...

Страница 74: ...dicated on the monitor name plate 3 Resetting OK input abnormal alarm Input the reference voltage from the synthesizer Reset more than 15 sec after input of the reference voltage to release OK input abnormal alarm in self holding alarm reset mode In auto reset mode OK is reset automatically after approx 15 sec 4 Verification of Recorder Output Measure the recorder output with a DMM and verify that...

Страница 75: ...n The machine is not protected during operation test 9 5 1 INTERCONNECTION ex VM 5G SINGLE UNIT INSTRUMENT RACK Connect a synthesizer to the input terminal of the VM 5G Single Unit Instrument Rack and measure the recorder output with a DMM Connect to the input output terminals of the channel under operation test Mandatory Warning A8 NC A9 SR2 A10 NO A11 NC A12 SR1 A13 NO A14 NC A15 OK A16 NO A17 L...

Страница 76: ...as follows depending on specifications Model Code No OFF set voltage VM 5S 1 4 0VDC VM 5S 2 2 5VDC VM 5S 3 0 0VDC VM 5S 4 2 5VDC Make the input frequency 100 of the value indicated on the monitor name plate 3 Resetting OK input abnormal alarm Input the reference voltage from the synthesizer Reset more than 15 sec after input of the reference voltage to release OK input abnormal alarm in self holdi...

Страница 77: ...utput measured with the DMM to 0 of output value Finalize the adjustment by pressing the SET key Adjustable range is 5 of monitor range 0 output is 1V if the recorder output specifications is 1 to 5VDC or 4mA if it is 4 to 20mADC MEAS 2 indicates the measured value 6 Recorder output span adjustment Display RECORDER OUTPUT SPAN ADJUSTMENT referring to page 39 7 5 PARAMETER SETTING 2 and make the vo...

Страница 78: ...m as necessary Replacement by SST is recommended Main Board Component Type Manufacturer Q ty Aluminum electrolytic capacitor C206 C207 C208 UPJ1E101M Nichicon 3 Isolation Card Component Type Manufacturer Q ty Aluminum electrolytic capacitor C1 UPJ1C471M Nichicon 1 To remove or install the monitor proceed according to the instruction manual of the instrument rack Failure to turn off the power befor...

Страница 79: ...ment rack Failure to turn off the power before pulling the monitor unit out of or inserting it into the rack will result in serious damage and accidents Do not touch the main board and LCD unit board with bare hands 1 Pull out the monitor unit 2 Disconnect the connector of the flat cable connecting the LCD unit to the main board Unlock two locks at the top and bottom of the connector 3 Take out th...

Страница 80: ...ETER SETTING on page 26 Do not touch the main board and LCD unit board with bare hands Use a small flat blade screwdriver to set the LCD contrast volume VR1 on the LCD unit to the desired contrast level Be noted that the characteristic of LCD contrast adjustment is as follows Mandatory Prohibition Back of face plate LCD Unit Flat blade screwdriver VR 1 1 turn Contrast ...

Страница 81: ...ll out the face plate referring to 7 PARAMETER SETTING on page 26 Do not touch the main board and LCD unit board with bare hands Use a small flat blade screwdriver to set the LCD backlight volume VR2 on the LCD unit to the desired brightness level Mandatory Prohibition Back of face plate LCD Unit Flat blade screwdriver VR 1 VR 2 ...

Страница 82: ... power supply again Is display normal OK Turn on power supply Connect correctly Perform LCD contrast adjustment Is display normal OK Repair VM 5 Display is abnormal YES NO YES YES NO NO YES NO Is Main board inserted firmly to the rack Is LCD connector inserted firmly Insert Main board firmly by pushing Main board frame Insert LCD connector firmly YES NO YES NO ...

Страница 83: ...gnostic findings OK Repair VM 5 OK NO YES YES NO Sensor wire breakage Sensor short circuit sensor wire breakage sensor gap too small Is Main board inserted firmly to the rack Insert Main board firmly by pushing Main board frame YES NO Check sensor set gap sensor and cable between sensor and monitor Check sensor set gap sensor and cable between sensor and monitor ...

Страница 84: ...HOOTING VM 5S 77 10 3 MEASURED VALUE ABNORMAL Start Trigger set properly Repair VM 5 Again set trigger level YES NO Hysteresis set properly NO YES Noise mixed in YES NO Set to a proper value Noise countermeasures ...

Страница 85: ...easurement range Start Is channel bypass in operation Release channel bypass YES NO Is DANGER bypass in operation Release DANGER bypass Set within measurement range NO NO YES YES Speed relay in operation YES YES OK Is channel bypass in operation Release channel bypass NO YES Repair VM 5 NO ...

Страница 86: ...PERATE 10 7 NO RECORDER OUTPUT Start Is channel bypass in operation Release channel bypass YES NO Repair VM 5 Start Hysteresis set properly Repair VM 5 Set to a proper value YES NO Noise mixed in YES NO Noise countermeasures Start Are output terminals connected correctly Repair VM 5 YES NO Connect correctly ...

Страница 87: ...Verify the set gap at the highest point of the target At the same time measure the set gap voltage at the output connection of the VM 5S monitor Set gap voltage Must be 15V or more closer to 0V end at highest point of target If the set gap voltage is lower than 15V the trigger level becomes inadequate due to frequency characteristics of the driver which may be interpreted as zero tachometer output...

Страница 88: ...ysteresis Check the monitor output and pulse output in turning condition and verify that the set values are appropriate refer to 7 PARAMETER SETTING on page 26 Also carefully check the signal waveform for noise components magnetic noise runout etc If the noise level is such that it cannot be eliminated by adjusting the hysteresis noise countermeasures such as installing a surge killer will be requ...

Страница 89: ...xternal circuit from the SPEED RELAY contact output terminal and record the monitor output waveform over the entire operating range from start up to stop Then check for mixed in noise as described in 11 2 The recorder configuration is the same as shown in 11 2 2 2 Reconnect the external circuit Then restart and stop the machine and verify that the system operates normally CH1 Monitor output CH2 Mo...

Страница 90: ...oltage Set value Set value Set value Result mm mm V V SR2 SR4 SR1 SR3 While turning 1 Monitor output waveform 2 Pulse output waveform 3 Trigger level and hysteresis set values if necessary as per results of items 1 and 2 4 Turning motor Operation check by switching turning motor ON OFF Refer to 7 PARAMETER SETTING on page 26 Verify OFF ON operation of SPEED RELAY contact output A B C D Trigger lev...

Страница 91: ... defects due to improper handling or operation by the user 2 Any defects the case of which is not attributable to Shinkawa Electric 3 Any modifications or repairs made by others than Shinkawa Electric or persons commissioned by Shinkawa Electric 4 Any handling storage and operation under severe environmental conditions that exceed the design specifications 5 Any defects due to fire flood earthquak...

Страница 92: ...Hiroshima Factory 4 22 Yoshikawa kogyodanchi Higashi hiroshima 739 0153 Japan Tel 81 82 429 1118 Fax 81 82 429 0804 Field support Repair Dept E Mail service sst shinkawa co jp ...

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