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- Page 1 CM7290 CM7291 Instruction Manual DISPLAY UNIT Oct. 2018 Revised edition 2 CM7290A961-02 18-10H GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
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Page 2: Table Of Contents
Contents Introduction ..................1 Verifying Package Contents .............1 Measurement Flowchart ..............3 When performing standalone measurement ......3 When measuring while connected to another device ....4 Safety Information ................6 Operating Precautions ..............8 Overview Overview and Features ..........11 Parts and Functions .............12 Display ..................13 Warning and battery power displays ........ - Page 3 Contents Types of output in the different measurement modes ....35 Setting measurement range ............. 36 Changing the Display/output update time (rate) (to Faster or Slower) ............37 Examples of Measurement Waveforms ......38 ® Bluetooth Communications (only for CM7291) ..39 Installing the application software GENNECT Cross ....39 Pairing the app with the CM7291 ..........
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Page 4: Introduction
Introduction Thank you for purchasing the Hioki CM7290/CM7291 Display Unit. To obtain for future reference. Verifying Package Contents When you receive the unit, inspect it carefully to ensure that no damage occurred during shipping. Pay particular attention to the accessories, panel switches, and connectors. - Page 5 Verifying Package Contents Options distributor Use an optional sensor equipped with a Hioki PL14 output connector. AC Adapter 9445-02 Output Cord (for banana terminal, 1.5 m) L9094 Output Cord (for BNC terminal, 1.5 m) L9095 Output Cord (for lead terminal, 1.5 m)
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Page 6: Measurement Flowchart
Measurement Flowchart Measurement Flowchart When performing standalone measurement Installation and connection You will need: A sensor equipped with a Hioki PL14 connector (optional) You will need: LR6 alkaline battery (AA) ×2 or an AC adapter If being driven by an AC adapter, the unit is automatically powered on. -
Page 7: When Measuring While Connected To Another Device
When measuring while connected to another device Installation and connection You will need: A sensor equipped with a Hioki PL14 connector (optional) Connect the unit to the power supply If being driven by an AC adapter, the unit is automatically powered on. - Page 8 Measurement Flowchart Example of connection to devices installed in a measuring system With the settings below, the unit will start up in the previously selected output mode and begin generating output whenever the power is supplied through the external power supply jack. This is the recommended way if the unit is connected to devices installed in a measuring system.
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Page 9: Safety Information
Safety Information Safety Information This unit is designed to conform to IEC 61010 Safety Standards, and has been thoroughly tested for safety prior to shipment. However, using the unit in a way not described in this manual may negate the provided safety features. Before using the unit, be certain to carefully read the following safety notes. - Page 10 Safety Information Symbols displayed on the unit corresponding topic in the instruction manual. Indicates DC (Direct Current). Indicates AC (Alternating Current). Symbols for various standards Indicates the Waste Electrical and Electronic Equipment Directive (WEEE Directive) in EU member states. This symbol indicates that the product conforms to regulations set out by the EU Directive. ®...
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Page 11: Operating Precautions
Operating Precautions Accuracy (digit) values, with the following meanings: (Maximum display value) Indicates the display unit’s maximum display value for the range that is currently f.s. in use. (Reading or displayed value) rdg. The value currently being measured and indicated on the measuring instrument. dgt. - Page 12 Operating Precautions Usage environment WARNING Avoid the following locations that could cause an accident or damage to the unit. Exposed to direct sunlight or high temperature Exposed to corrosive or combustible gases Near induction heating systems (such as high-frequency induction Susceptible to mechanical vibrations Exposed to water, oil, chemicals, or solvents Exposed to high humidity or condensation...
- Page 13 Operating Precautions Handling of the cables WARNING Damage to the cables or the unit may result in electric shock. Before using the unit, perform the following inspection. Before using the unit, make sure that the insulation on the cables are undamaged and that no bare conductors are improperly exposed.
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Page 14: Overview
Overview 1.1 Overview and Features The CM7290 Display Unit is to be used with a current sensor equipped with a Hioki PL14 output connector. It will automatically recognize the current sensor when it is connected, and the range and output rate will be automatically set. Set the measurement mode to AC or DC so that the unit can display or output values. -
Page 15: Parts And Functions
Parts and Functions 1.2 Parts and Functions CM7291 (Display unit with protector) Front Rear Sensor input connector Protector* Display section Control keys Battery cover Serial No. label “AC adapter” (p. 9) Bottom AC adapter jack (external power supply jack) Output jack Dust cap If the protector or dust cap gets dirty or damaged, replace it as necessary. -
Page 16: Display
Parts and Functions Display Output ×10 function enabled Save settings enabled Output mode enabled Unit Measured value (main display) Response speed Items displayed when analysis Hold function enabled display is enabled Filter function is enabled (Subdisplay:) Measurement modes Instantaneous value when analysis display is enabled Over-range Output rate when output mode... -
Page 17: Warning And Battery Power Displays
Parts and Functions Warning and battery power displays Warning displays Appears when the measured value exceeds the maximum input range. Appears when the display value exceeds the output range while the output mode is PEAK or FREQ. Battery power warning display Battery full. -
Page 18: Tables Of Key Operations
Tables of Key Operations 1.3 Tables of Key Operations This section describes how to access different functions by pressing keys differently. Turn on power Short press 1-second long press while pressing key* Execute the operation Execute the operation command (see the written on the key written above the key following pages) -
Page 19: Measuring
Tables of Key Operations Measuring Screen display Desired operation How to set/ Enabled: Lit Description (function) cancel it Disabled: Unlit When the unit is driven by power from an AC adapter or external DC power supply, this key is Turn the power on Display lights up disabled, and in order to (with battery drive) -
Page 20: Display/Output/Communication
Tables of Key Operations Screen display Desired operation How to set/ Enabled: Lit Description (function) cancel it Disabled: Unlit "MAX": The unit will display values Maximum value for the interval starting "MIN": when the analysis display Minimum value was activated (in the main "AVG": display). -
Page 21: System Operation
Tables of Key Operations Screen display Desired operation How to set/ Enabled: Lit Description (function) cancel it Disabled: Unlit This function is used when the magnitude of the output is so low that it may be obscured by noise from Select output nearby equipment. -
Page 22: Maintenance Operation
Tables of Key Operations Maintenance operation How to set/ Desired operation Screen display Description cancel it Used for checking the Serial No. when you are unable to Turn on check the No. on the back of Display Serial No. power while the unit because it has been pressing key installed into another device. -
Page 23: Handy Functions
Tables of Key Operations Handy functions Desired operation Screen display (function) How to set/ Enabled: Lit Description cancel it : Enabled (factory Disabled: Unlit settings) This function can be used if a no-input state will continue for approximately 1 minute when the unit is turned on. - Page 24 Tables of Key Operations Desired operation Screen display (function) How to set/ Enabled: Lit Description cancel it : Enabled (factory Disabled: Unlit settings) Backlight will be turned off automatically after being lit Have backlight for approx. 40 seconds. turned off Turn on Setting is memorized when automatically...
- Page 25 Tables of Key Operations 1-second long Turn on power Short press press while pressing key Sets/cancels HOLD Disables auto power-save Lit / Unlit APS Unlit Cancels the Enables or switches the Enables/disables the analysis display analysis display function buzzer sound function "MAX": Maximum value "MIN": Minimum value...
- Page 26 Tables of Key Operations 1-second long Turn on power Short press press while pressing key When using battery power: Turn the power on When using After APS has been battery power: disabled, turning on Turn the power the power again will re-enable APS Display lights up APS Lit...
- Page 27 Tables of Key Operations 1-second long Turn on power Short press press while pressing key Sets/cancels ×10 output function This operation can only be performed during output operation. ×10 Lit / Unlit GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
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Page 28: Pre-Measurement Preparation
Pre-measurement Preparation 2.1 Installing the Z5004 Magnetic Strap Attach the optional Z5004 Magnetic Strap as required. The magnet can be used to attach to a wall, such as a metal surface. Strap slit Magnet GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com... -
Page 29: Connecting The Sensor
Connecting the Sensor 2.2 Connecting the Sensor is connected, its type will be automatically recognized, and settings that match the rate). Insert the output connector of the sensor so that the arrow is aligned with the arrow on the sensor input connector of the unit. Connecting a sensor consuming a large current while operating the unit on battery power with low battery voltage may cause the unit to shut off due to its inability to GlobalTestSupply... -
Page 30: Supplying Power
Supplying Power 2.3 Supplying Power Installing/replacing the batteries batteries. Also, before measurement, check that there is adequate power in the batteries. If there is not, replace the batteries. Batteries can be replaced with the protector installed. Disconnect the sensor from the conductor to be measured, before replacing the batteries. -
Page 31: Connecting The Ac Adapter (Optional)
Supplying Power Connecting the AC adapter (optional) connecting the AC adapter. Use the optional AC adapter to supply power from an outlet. When power is supplied via the AC adapter, the unit will run on AC adapter drive even if batteries are installed. Connect AC adapter jack (external Outlet... -
Page 32: Connecting To An External Dc Power Supply
Supplying Power Connecting to an external DC power supply supply. When connecting to an external DC power supply, make sure that the supply has the correct rating and uses a compatible connector. When power is supplied from an external DC supply, that power supply will receive priority and the unit will operate on power from the external DC power supply even if batteries have been installed. -
Page 33: Turning The Power On/Off
Turning the Power On/Off 2.4 Turning the Power On/Off When using battery power Turning the power on/off Turning the power on: short press Turning the power off: long press When using the AC adapter or an external DC power supply: The unit will remain on at all times. -
Page 34: Connecting To An External Device
Connecting to an External Device 2.5 Connecting to an External Device If the unit is to be used in combination with another device, use the output cord (optional) to connect to the external device. If the sensor cable is not long enough, use an extension cable (optional). Insert the output cord all the way into the unit. -
Page 35: Measurement And Output
Measurement and Output 3.1 Inspection Prior to Use Inspect the unit and sensor for any damage it may have sustained during storage contact your authorized distributor Where to check Check item Solution Cables Any cable's insulation Do not use the cable. Have it 3 3 3 broken? repaired. -
Page 36: Taking Measurements
Taking Measurements 3.2 Taking Measurements Clamp the conductor Execute zero adjustment. Long press Measurement modes: AC + DC Select the measurement mode To measure current of not more [FAST/SLOW] key to set the response speed to SLOW. alternatively set manual ranging measurement. -
Page 37: Types Of Output In The Different Measurement Modes
Taking Measurements Types of output in the different measurement modes AC/DC sensor sensor WAVE PEAK AC/DC 3 3 3 WAVE PEAK WAVE FREQ CAUTION GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com... -
Page 38: Setting Measurement Range
Taking Measurements Setting measurement range Measurement mode AC/DC AC/DC sensor AC/DC sensor AC sensor AC sensor AUTO AUTO AUTO ×10 ×100 99.99 Hz ×1 ×10 999.9 Hz ×1 9.999 Hz sensors. range. GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com... -
Page 39: Changing The Display/Output Update Time (Rate) (To Faster Or Slower)
3.3 Changing the Display/output update time (rate) (to Faster or Slower) (factory settings: NORMAL Response speed Time FAST NORMAL SLOW Short press The display or output may indicate an excessively large value immediately after GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com... -
Page 40: Examples Of Measurement Waveforms
3.4 Examples of Measurement Waveforms Table of waveforms Accuracy Output Measurement Measurement (display unit mode and Display WAVE PEAK symbol Section No. Display Output Cannot be set. Cannot be set. 0 0 V Zero Cannot be set. Cannot be set. component converted/ Cannot be set. -
Page 41: Bluetooth Communications (Only For Cm7291)
® 3.5 Bluetooth Communications (only for CM7291) ® ® (Bluetooth ® When the Bluetooth create measurement reports Install the GENNECT Cross on your mobile ® Enable the Bluetooth function on the CM7291. Launch the GENNECT Cross and pair it with 1-second long press Select the general measurement, logging,... -
Page 42: Pairing The App With The Cm7291
Pairing the app with the CM7291 The instrument is automatically Home>Other Return to the home screen. Settings Instrument registered ® Making measurements with the Bluetooth function A value displayed in the app and that displayed on the instrument may differ from A statistical value calculated from logged values and an analytical value displayed on the instrument may differ from each other. - Page 43 Indoors, Pollution Degree 2, altitude up to 2000 m (6562 ft.) -25°C to 65°C (-13°F to 149°F), 80% RH or less (non-condensing, except for battery) -25°C to 65°C (-13°F to 149°F), 80% RH or less (non-condensing, except for battery) IP54 (EN60529) (with AC adapter/power connector cap on and sensor connected) Safety EN61010...
- Page 44 In either of the following conditions: In either of the following conditions: ® ® - With Bluetooth turned OFF, - With Bluetooth turned ON, the Sensor the backlight turned off, and output mode set to OFF, and the power the output mode set to WAVE backlight turned OFF consumption ®...
- Page 45 PEAK or FREQ With power ON Guaranteed accuracy period: 3 years Guaranteed accuracy period from adjustment made by Hioki: 3 years Temperature and humidity for guaranteed accuracy: 23°C±5°C (73°F ±9°F), 80% RH or less Zero-adjustment executed GlobalTestSupply www.
- Page 46 Measurement AC accuracy guaranteed Response speed response time frequency range FAST 0.3 s 45 Hz 1 kHz NORMAL 0.8 s 10 Hz 1 kHz SLOW 5.0 s 3 Hz 1 kHz Time required for the RMS output value to fall within the Within the operating temperature range, add measurement accuracy ×...
- Page 47 1. DC display (Measured value/MAX/MIN/AVG DC value), coupling method: DC coupling Guaranteed-accuracy Range Measurement accuracy frequency range ×1, ×10 ±0.3% rdg.±8 dgt. 2. AC display, coupling method: AC coupling AC rms value (Measured value/MAX/MIN/AVG rms) Guaranteed-accuracy Measurement accuracy Range frequency range ×100 ±1.8% rdg.±15 dgt.
- Page 48 3. DC+AC display, coupling method: DC coupling DC+AC rms value (Measured value/MAX/MIN/AVG rms) Guaranteed-accuracy Measurement accuracy Range frequency range ±1.5% rdg.±15 dgt. ±1.2% rdg.±12 dgt. ×1, ×10 (for 300 dgt. or ±0.8% rdg.±12 dgt. greater) ±0.3% rdg.±12 dgt. ±1.0% rdg.±12 dgt. DC+AC peak (PEAK MAX/PEAK MIN Zero-to-Peak) Guaranteed-accuracy Measurement accuracy...
- Page 49 5. DC output Guaranteed-accuracy Range Output type Output accuracy frequency range ×1, ×10 WAVE ±0.5% rdg.±0.8 mV ×10 and ±0.3% rdg. 6. AC output Output accuracy Output Guaranteed-accuracy Range during FAST or NORMAL mode operation type frequency range rdg. ±0.5 mV.) ±2.0% rdg.±1.5 mV WAVE ±1.5% rdg.±1.3 mV, phase ±0.2 deg.
- Page 50 7. DC+AC output Guaranteed- Output accuracy Output Range accuracy type frequency range ±1.5% rdg.±1.2 mV ±1.4% rdg.±1.2 mV, phase (design value) ±0.2 deg. WAVE ±1.0% rdg.±1.2 mV, phase ±0.2 deg. ±0.5% rdg.±1.2 mV, phase ±0.2 deg. ±1.2% rdg.±1.2 mV ±1.7% rdg.±1.2 mV ×1, ×10 ±1.4% rdg.±1.2 mV ±1.0% rdg.±1.2 mV...
- Page 51 Response speed Output Display update or frequency Output update rate Notes mode rate range SLOW 1.0 s (1 time/s) Disabled NORMAL 0.2 s (5 times/s) No output FAST 0.2 s (5 times/s) SLOW 1.0 s (1 time/s) WAVE NORMAL 0.2 s (5 times/s) (Analog output) FAST 0.2 s (5 times/s)
- Page 52 Factory settings Functions Description and notes Measurement DC, AC, DC + AC, or FREQ DC + AC modes Display/output Display and output update time (rate) NORMAL update time (rate) Ranging Auto: Optimal range is selected automatically Factory settings: RANGE: AUTO lights up RANGE: AUTO Manual: Range is selected manually RANGE: MANUAL lights up...
- Page 53 Factory settings Functions Description and notes Warning displays If input exceeds the range, the range f.s. value is didplayed with OVER segments When output peak exceeds the range, the lights up Auto power Power is switched off if no operation is Enabled, but will save performed for approx.
- Page 54 Factory settings Functions Description and notes Keylock Disables all key operations (except canceling Factory setting: of keylock) However, turning the power ON/OFF is possible is displayed Zero adjustment at Executes zero adjustment at power-up Factory setting: is displayed power-up Output Makes output 10 times higher than normal Factory setting: Output ranges:...
- Page 55 Item Symbol Notes Output jack OUTPUT Diameter 3.5 mm monaural pin-jack DC external power (EIAJ RC5320A TYPE 3) 5 V to 15 V and supply (Grip portion external diameter not more than 10 mm) Display of measured values on a smartphone or a tablet while using Display function ®...
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Page 56: Maintenance And Service
How often you should calibrate the unit will depend on the usage conditions and the environment. Determine a calibration interval that is suited to your usage conditions and environment, and request to have calibration done by Hioki. Precautions when transporting the unit To avoid damage to the unit, remove the accessories and optional equipment from the unit. -
Page 57: Troubleshooting
Troubleshooting 5.1 Troubleshooting Troubleshooting checklist If you feel that the unit may be malfunctioning, contact your authorized distributor after carrying out the checks below. Problem Check Solution Power will not When AC adapter is used: turn on Is the AC adapter inserted all Insert it all the way in. - Page 58 Troubleshooting Problem Check Solution Display will not Has DC or AC+DC Execute zero adjustment. reset to zero measurement mode been selected? Is the possible range for If the range is exceeded, zero adjustment exceeded? the current sensor must be repaired. Approx.
- Page 59 Troubleshooting Problem Check Solution Display value is lower than expected used higher are present, the value will be low. The batteries have run low. Does the indicator Replace with new batteries. Does the frequency of the Use a current sensor current being measured fall that conforms with the If the inverter's carrier...
- Page 60 Troubleshooting Problem Check Solution Output value is Carry out the same checks lower than expected as for "Display value is lower than expected." Is the output cord inserted all Insert it all the way in. the way into the output jack? If a wire has snapped, Has a wire snapped? replace the cord with a new...
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Page 61: Error Displays
Error Displays Problem Check Solution Display value Frequency measurement is higher than Is a large magnetic or electric Distance the unit from the expected noise generation source. generated nearby? Use an appropriate range dgt. or more of the current and/or an appropriate current range? sensor. -
Page 62: Appendix Appx.1
Appendix Appx. 1 Range Structure, Output rate, and Power Consumption Category with a Sensor Connected Appx.1 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com... -
Page 63: Appx. 2 Calculating Accuracy When Used With A
Calculating Accuracy When Used with a Sensor Appx. 2 Calculating Accuracy When Used with a Sensor The following examples illustrate how to calculate accuracy when measuring a 58.00 A, 60 Hz current (with the instrument set to the 10 range and AC ×... -
Page 64: Appx. 3 Combined Accuracies
Combined Accuracies (Representative values) Appx. 3 Combined Accuracies (Representative values) Appx.3 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com... - Page 65 Combined Accuracies (Representative values) Appx.4 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
- Page 66 Combined Accuracies (Representative values) Appx.5 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
- Page 67 Combined Accuracies (Representative values) Appx.6 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
- Page 68 Combined Accuracies (Representative values) Appx.7 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
- Page 69 Combined Accuracies (Representative values) Appx.8 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
- Page 70 Combined Accuracies (Representative values) Appx.9 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
- Page 71 Combined Accuracies (Representative values) Appx.10 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
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Page 72: Appx. 4 Measurement Response Waveforms
Measurement Response Waveforms Appx. 4 Measurement Response Waveforms When generating RMS or PEAK output, select an appropriate measurement response time based on the following waveform response information: RMS output (input: 3 Hz) RMS Output (3 Hz Input) RMS Output (3 Hz Input) Time (sec) Time (sec) RMS output (input: 10 Hz) - Page 73 Measurement Response Waveforms PEAK output (input: 10 Hz) PEAK Output (10 Hz Input) Time (sec) PEAK output (input: 50 Hz) PEAK Output (50 Hz Input) Time (sec) Appx.12 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
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