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Replacing the Power Fuse

Replaceable Parts and Operating Lifetimes

The characteristics of some of the parts used in the product may deteriorate with extended use.

To ensure the product can be used over the long term, it is recommended to replace these parts on a

periodic basis. When replacing parts, please contact your authorized Hioki distributor or reseller.

The service life of parts varies with the operating environment and frequency of use.

Parts are not guaranteed to operate throughout the recommended replacement cycle.

Part name

Recommended replacement cycle

Electrolytic Capacitors

Approx. 10 years

LCD backlight

Approx. 20,000 hours

Relay

Approx. 1 million operations

6.4 Replacing the Power Fuse

WARNING

•

To avoid electric shock, turn off the power switch and disconnect the connection

cables before replacing the fuse.

•

Replace the fuse only with one of the specified type, characteristics, rated current,

and rated voltage. Do not use fuses other than those specified (especially, do not use

a fuse with higher-rated current) or do not short circuit and use the fuse holder. Doing

so may damage the device and result in bodily injury.

Fuse type: MF60NRF-8A f6.4 mm×30 mm Normal-acting fuse

Prepare: Phillips head screwdriver

Fuse holder

Turn off the power switch and disconnect the power cord.

Remove the fuse holder using the Phillips head screwdriver.

Remove the power fuse from the fuse holder.

Fuse:

6.4 mm 30 mm,

MF60NRF-8A f6.4 mm 30 mm Normal-acting fuse

Insert a new power fuse with the specified rating into the fuse holder.

Insert the fuse holder into its original location and tighten the screw. (Use the Phillips

head screwdriver)

This completes the process of replacing the power fuse.

Содержание SM7860 Series

Страница 1: ...SM7860 65 SM7860 66 SM7860 67 SM7860 68 EN July 2018 Revised edition 1 SM7860J961 01 18 07H Be sure to read this manual before using the device Safety Information p 4 When using the device for the fir...

Страница 2: ......

Страница 3: ...Preparation and Supply Power 15 2 1 Installation and Connection Procedures 15 2 2 Connecting the Power Cord 16 2 3 Connecting the Device to the Measuring Instrument 17 2 4 Inspection Before Operation...

Страница 4: ...Contents ii...

Страница 5: ...10 V SM7860 52 1000 V 32 channels 100 V to 110 V SM7860 53 500 V 16 channels 500 V 16 channels 100 V to 110 V SM7860 54 1000 V 16 channels 1000 V 16 channels 100 V to 110 V SM7860 55 500 V 8 channels...

Страница 6: ...r switch OFF side of the power switch AC alternating current Grounding terminal Others Additional information is presented below p Indicates the location of reference information Key names are indicat...

Страница 7: ...the specifications contact your authorized Hioki distributor or reseller Device and Accessories Confirm that you have received the following items Model SM7860 series Power Source Unit Power cord Ins...

Страница 8: ...cable laws and regulations Operating Precautions Follow these precautions to ensure safe operation and to obtain the full benefits of the various functions Checks before use DANGER If the connection c...

Страница 9: ...rong electromagnetic field or electrostatic charge Near induction heating systems such as high frequency induction heating systems and IH cooking equipment Susceptible to vibration Exposed to water oi...

Страница 10: ...ot use the device with circuits that exceed its ratings or specifications Doing so may damage the device or cause it to become hot resulting in a bodily injury Do not short circuit two wires to be mea...

Страница 11: ...ORTANT Use only the specified connection cords Use of any cable not specified by our company may result in incorrect measurements due to poor connection or other reasons To ensure accurate measurement...

Страница 12: ...8 Operating Precautions...

Страница 13: ...tches eliminates the need for maintenance Ability to limit current for individual channels means the measurement of other channels won t be affected when a target workpiece has a short Variable output...

Страница 14: ...P PAGE DOWN Use to scroll the display LCD Refer to 1 3 Screen Configuration p 13 Used to assign the GP IP address and to configure the output setting for the device interlocked Refer to Configuring GP...

Страница 15: ...ed power cord Refer to 2 2 Connecting the Power Cord p 16 6 GND terminal Serves as the ground terminal Connects to the device s enclosure 7 GP IB connector Connect to a PC when using the GP IB interfa...

Страница 16: ...dle total of 4 located on the left and right sides of the device It should be moved by at least two people who should grip it using the handles on the left and right sides 2 Ventilation holes Keep cle...

Страница 17: ...e setting VB Displays the power supply B circuit voltage setting Display example VA IR 1000 0 Indicates that the power source s A circuit is set to 1000 0 V 2 Temperature error display When a temperat...

Страница 18: ...to 10 mA Screen P2 Displays alarms the GP IP address and output setting for the device interlocked V A A L A R M 1 9 V B A L A R M 1 9 G P I B A D D R 1 I L O C K D C H G O F F TEMP TEMP L 8 9 2 P2 10...

Страница 19: ...tall the device p 5 2 Connect the power cord p 16 3 Connect the device to the measuring instrument p 17 4 Connect the external interface Using the GP IB or RS 232C interface p 23 Using the EXT I O p 3...

Страница 20: ...n the power cord is undamaged and that no bare conductors are improperly exposed Using the device in such conditions could cause an electric shock so replace the power cord with those specified by our...

Страница 21: ...ad that has a charge when the device is turned off Connection Method 2 1 1 Confirm that the device is turned off 2 Connect model L2221 Connector 1 optional to the voltage output terminal on the rear o...

Страница 22: ...ulation torn or is any metal exposed Exposed Do not use them if they are damaged because it may cause an electric shock Replace with a new cord Not exposed Inspection of device Is there any damage on...

Страница 23: ...voltage output terminals Doing so may cause an electric shock CAUTION When turning the device on and off do not connect a load to the voltage output terminals Turning the device on or off with a load...

Страница 24: ...nterface p 23 The device cannot be configured directly in a standalone manner Setting function Description of operation and settings Reference Output voltage Sets the output voltage Setup ranges 1 0 V...

Страница 25: ...m the P1 or P2 screen The GP IB address assigning screen is displayed V A I R 1 0 0 0 0 V B I R 2 5 0 0 T E R M I N A L O U T 1 1 1 1 0 0 0 0 0 O U T 2 1 1 1 0 0 0 0 0 O U T 3 1 1 1 0 0 0 0 0 O U T 4...

Страница 26: ...22 Output Setting for the Device Interlocked...

Страница 27: ...the data is provided in the specified format 1 Connect the cable p 26 Connect the device and controller PC etc with a GP IB connection cable or RS 232C interface cable 2 Set the communications protoco...

Страница 28: ...available SH1 Source handshake functions all AH1 Acceptor handshake functions all T6 Basic talker functions Serial poll function Talk only mode The talker cancel function with MLA My Listen Address L4...

Страница 29: ...eive CR CR LF Flow control No X flow control no hardware flow control Protocol TTY Electrical specification Input voltage level 5 V to 15 V ON 15 V to 5 V OFF Output voltage level 5 V or more ON 5 V o...

Страница 30: ...ighten the screws on the connector securely Failure to secure the connector could result in equipment malfunction or damage CAUTION To avoid damage to the device do not short circuit the terminal and...

Страница 31: ...munications GP IB Setting the GP IB address 1 Press and hold both of the scroll keys PAGE UP and PAGE DOWN on the right of the screen simultaneously for approx 3 s The address can be set from the P1 o...

Страница 32: ...om the RS 232C interface RS 232C interface communications will not be available until the RMT command is sent 3 5 Communication Method Various messages are supported for controlling the device through...

Страница 33: ...n be specified with the DLM command LF initial setting CR LF EOI Separators 1 Message Unit Separator Multiple message can be written in one line by separating them with semicolons 2 Header Separator I...

Страница 34: ...it 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 ERR RQS ESB MAV DSB unused unused unused Status Byte Register STB MSS Logical sum bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 ERR ESB MAV DSB unused...

Страница 35: ...andard Event Status logical sum bit This is logical sum of the Standard Event Status Register Bit 4 MAV Message available Indicates that a message is present in the output queue Bit 3 DSB Event Status...

Страница 36: ...executed because there is an internal anomaly Bit 2 QYE Query Error the output queue is cleared This bit is set to 1 when a query error is detected by the controller of the output queue When an attemp...

Страница 37: ...ter structure Bit No Name Event status indicated by set bit Bit 7 Unused Bit 6 MLE Message Length Error Set when the message length exceeds the allowable range The bit is reset after the register is r...

Страница 38: ...varies with the model Format VAI d1 d1 NR2 format VAI Circuit A output voltage setting query The contents of responses are the same as the settings Format Response VAI d1 VBI Circuit B output voltage...

Страница 39: ...127 Note Error information is cleared when the response is output Format Response ERR d1 NR1 format Others RST Resets the device Restore all the settings to the factory default except for the output...

Страница 40: ...onse CNF d1 KLC Key lock setting d1 0 to 1 0 Key lock off 1 Key lock on Format KLC d1 d1 NR1 format KLC Key lock query d1 0 to 1 The contents of responses are the same as the settings Format Response...

Страница 41: ...fore making connections During operation a wire becoming dislocated and contacting another conductive object can be serious hazard Use bail locks to secure the EXT I O connector Ensure that devices an...

Страница 42: ..._ON Input 7 OUT1 7 _ON Input 32 OUT1 8 _ON Input 8 OUT2 1 _ON Input 33 OUT2 2 _ON Input 9 OUT2 3 _ON Input 34 OUT2 4 _ON Input 10 OUT2 5 _ON Input 35 OUT2 6 _ON Input 11 OUT2 7 _ON Input 36 OUT2 8 _ON...

Страница 43: ...ecific channel on off setting OUT4 1 _ON to OUT4 8 _ON Specific channel on off setting INTERLOCK When on no voltage can be generated The INTERLOCK signal cannot be used unless it has been enabled with...

Страница 44: ...1 _ON to 8 _ON OUT4 1 _ON to 8 _ON High impedance High impedance High impedance High impedance High impedance High impedance t1 t2 t6 t9 t3 t7 t5 t4 t8 t10 t11 OUT1 CH1 to CH8 EXT I O connector Volta...

Страница 45: ...s or less t4 Output on Voltage output delay time 600 s or less t5 Alarm delay time 3 5 ms or less t6 Output pulse width 8 ms or more t7 Output off Busy delay time 800 s or less t8 Output off Voltage...

Страница 46: ...ltage The internal voltage follows either the pattern with 1 or that with 2 depending on models 1 SM7860 51 52 61 62 OUT1 to OUT4 SM7860 53 54 63 64 OUT1 to OUT2 SM7860 55 56 65 66 OUT1 SM7860 57 58 6...

Страница 47: ...43 Timing Chart When the output setting for the device interlocked is set to the high impedance state OFF High impedance INTERLOCK 1 CH1 to CH8 2 CH1 to CH8 3 CH1 to CH8 4 CH1 to CH8 EXT I O connector...

Страница 48: ...l device side SM7860 side SM7860 side EXT_DC2 5 V DC to 24 V DC 24 V DC Input Signals Input method Photocoupler isolated input Input voltage Input voltage LOW 0 V to 0 5 V HIGH 24 V 10 Output Signals...

Страница 49: ...V AC SM7860 61 62 63 64 65 66 67 68 220 V AC Voltage fluctuations of 10 from the rated supply voltage are taken into account Rated supply frequency 50 Hz 60 Hz Anticipated transient overvoltage 2500...

Страница 50: ...7860 63 Maximum output current 430 mA 200 VA 430 mA 200 VA Output voltage range 1 0 V to 500 0 V 0 1 V resolution 1 0 V to 500 0 V 0 1 V resolution Channels OUT 1 1 to 8 Voltage output OUT 2 1 to 8 Vo...

Страница 51: ...o 8 Discharge Current limit 2 mA to 50 mA CH 2 mA to 50 mA CH SM7860 58 SM7860 68 Maximum output current 430 mA 200 VA 430 mA 200 VA Output voltage range 1 0 V to 500 0 V 0 1 V resolution 1 0 V to 500...

Страница 52: ...ckup items Output voltage setting alarm setting GP IB address Voltage monitor function Voltage monitor Measures and displays output voltage for each circuit Interlock function Operation Interlock is e...

Страница 53: ...rom same circuit Voltage monitor accuracy 2 of output voltage 0 5 V Current limit accuracy 10 of setting 1 mA Limitations Voltage application target Multi layer ceramic capacitor Number of charging ch...

Страница 54: ...ycle times at which this automated system can operate based on the output voltage and capacitor capacitance For example when charging a 25 V 30 F capacitor a charge interval of approximately 37 ms can...

Страница 55: ...o include shorted components check each component before initiating testing and avoid applying current if shorted Design the system so that each of the 32 external input EXT I O signals from OUT1 1 _O...

Страница 56: ...cific channel on off setting OUT 3 1 _ON to OUT 3 8 _ON Specific channel on off setting OUT 4 1 _ON to OUT 4 8 _ON Specific channel on off setting INTERLOCK When on no voltage can be generated Output...

Страница 57: ...t be used immediately after the RS 232C interface is used p 24 Settings cannot be configured from the RS 232C interface Did you send the RMT command Send the RMT command first for the RS 232C interfac...

Страница 58: ...urn off and you will once more be able to control the unit All channels will be turned off when the unit resumes operation so you will need to reconfigure the output channels for use p 13 p 49 ERROR 0...

Страница 59: ...voltage points inside the device is very dangerous Customers are not allowed to modify disassemble or repair the device Doing so may cause a fire electric shock or injury Cleaning CAUTION Clean the ve...

Страница 60: ...e power switch and disconnect the connection cables before replacing the fuse Replace the fuse only with one of the specified type characteristics rated current and rated voltage Do not use fuses othe...

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