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INSTRUCTION MANUAL

CHVM2 Series

TDK­Lambda

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BEFORE USING THE POWER SUPPLY UNIT

Be sure to read this instruction manual thoroughly before using this product. Pay attention to all cautions and warnings before 
using this product. Incorrect usage could lead to an electrical shock, damage to the unit or a fire hazard.

DANGER

Never use this product in locations where flammable gas or ignitable substances are present.

INSTALLATION WARNING

When installing, ensure that work is done in accordance with the instruction manual. When installation is improper, 
there is risk of electric shock and fire. 

Installation shall be done by Service personnel with necessary and appropriate technical training and experience.
There is a risk of electric shock and fire. 

Do not cover the product with cloth or paper etc. Do not place anything flammable around. This might cause damage, 
electric shock or fire.

WARNING ON USE

Do not touch this product or its internal components while circuit in operation, or shortly after shutdown. You may 
receive a burn.

While this product is operating, keep your hands and face away from it as you may be injured by an unexpected situation. 

There are cases where high voltage charge remains inside the product. Therefore, do not touch even if they are not in 
operation as you might get injured due to high voltage and high temperature. You might also get electric shock or burn. 

Do not make unauthorized changes to this product nor remove the cover as you might get an electric shock or might 
damage the product. We will not be held responsible after the product has been modified, changed or dis­assembled. 

Do not use this product under unusual condition such as emission of smoke or abnormal smell and sound etc. Please stop 
using it immediately and shut off the product.
It might lead to fire and electric shock. In such cases, please contact us. Do not attempt repair by yourself, as it is 
dangerous for the user.

Do not operate and store these products in environments where condensation occurs due to moisture and humidity. 
It might lead fire and electric shock.

Do not drop or apply shock to this product. It might cause  failure. Do not operate these products mechanical stress is 

applied.

CAUTION ON MOUNTING

Confirm connections to input/output terminals are correct as indicated in the instruction manual before switching on.

Input voltage, Output current, Output power, ambient temperature and ambient humidity should be kept within 
specifications, otherwise the product will be damaged. 

Input line, please use the wires as short and thick as possible.

Do not use this product in special environment with strong electromagnetic field, corrosive gas or conductive substances 
and direct sunlight, or places where product is exposed to water  or rain.

Please shut down the input when connecting input and output of the product.

When installing  in environment where conductive foreign, dust and liquid may be present, 
please consider penetration of above foreign material in the power supply by installing filter, to prevent trouble or
malfunction.

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QC001­04­02

CHVM2 Series

Instruction Manual

Summary of Contents for CHVM2 Series

Page 1: ...the cover as you might get an electric shock or might damage the product We will not be held responsible after the product has been modified changed or dis assembled Do not use this product under unu...

Page 2: ...tective device inside the system providing redundant circuit to ensure no instability when single device failure occurs When used in environments with strong electromagnetic field there is possibility...

Page 3: ...idity the following conditions shall be used as a guideline Temperature range 5 30 Humidity range 40 60 RH Please keep away from the places where temperature and humidity can change drastically It can...

Page 4: ...tion Output voltage accuracy Usage temperature range Storage temperature range Usage humidity range Input output isolation 470V type 0 08 typ 1KV 1 5KV 2KV type 0 03 typ Load current 0 to 100 0 01 typ...

Page 5: ...m Vref Vcont Load 1 2 OPEN 4 6 3 C1 C2 7 C1 47 F C2 4700pF 5 ON OFF SW1 SW1 Open ON Short OFF Output voltage control 0V to 4V impressed CHVM F1 12V SW1 Vin Vin Vout or Vout com Vcont Vref ON OFF ON OF...

Page 6: ...nput side has a filter then connecting a capacitor C1 to the input side is recommended Place the capacitor as close as possible near to the converter pin side to lower the lead inductance 6 11 Pin No...

Page 7: ...out any chattering When the output is turned off by ON OFF control the residual output voltage should be within 0 5 Over current protection The CHVM series installed the over current protection to pro...

Page 8: ...ern should be taken in when designing 2 When mounting to a double sided PCB the land of the parts side of the high voltage output pin should be as small as possible 3 The case of CHVM series should be...

Page 9: ...K R1 0 R2 5K the max voltage 4 0V will impress to Vcon pin Therefore the margin of error for the resistance value will largely affect the max output voltage so use the resistance value as 5 0K 5 9 11...

Page 10: ...erating graph below The minimum load resistance is set for each series When using higher than 50 set the load resistance high by following the below graph Protection against reverse connection The con...

Page 11: ...output side should be able to withstand the pressure and connect to the load side At this time the capacitor lead should be shortened Also when the load response time is a problem please be aware of...

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