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Vox Power NEVO Plus 1200 Series, User Manual

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Vox Power NEVO Plus 1200 Series User Manual Download Page 26

NEVO+1200 Series 

AC/DC MODULAR CONFIGURABLE POWER SUPPLIES 

 

User Manual 

 

Page 26 of 40

 

DOC-MN-006-03, NEVO+1200 User Manual 

Vox Power Limited | Unit 2, Red Cow Interchange Estate, Ballymount, Dublin 22, D22 Y8H2, Ireland | T +353 1 4591161 | www.vox-power.com

 

Isolation 
Each output channel in a Nevo Dual output module is fully isolated. Each output is rated for 250 volts maximum between each output terminal and 
chassis ground. Exceeding this voltage may damage the unit. 

 

 

Summary of Contents for NEVO Plus 1200 Series

Page 1: ...loss of life or catastrophic property damage The user will hold Vox Power Ltd harmless from any loss cost or damage resulting from its breach of these provisions NEVO 1200 Series Overview The Nevo 12...

Page 2: ...NEVO 1200 Series Overview 1 Part Numbers and Ordering Information 3 Installation Notes 4 Theory of Operation 6 Input Module Operation 7 Signalling 10 Single Output module operation 13 Advanced Single...

Page 3: ...A 150W 9V 30V 150mV 0 1 Vnom 36V 4 48V 3 75A 150W 18V 58V 300mV 0 1 Vnom 66V 5 12V Dual 5A 75W x 2 3 3V 15V Each Ch 50mV 0 1 Vnom 22V 8 24V Dual 3 125A 75W x 2 24V Each Ch 100mV 0 1 Vnom 30V PART NUMB...

Page 4: ...able parts Repairs must be carried out by authorised personnel only Contact Vox Power for further information APPROVAL LIMITATIONS NORTH AMERICA When this product is used with 180VAC 253VAC mains wher...

Page 5: ...sis designed to comply with EMC standards but it does not imply that the end system will comply To prolong the life of the unit use in dust free environment Units can sometimes be damaged during trans...

Page 6: ...esistive element upon initial connection to the AC line Once the internal capacitances have been charged the resistive element is bypassed to reduce losses Active Power Factor Correction PFC is used t...

Page 7: ...line distubances 20ms the output voltages will not be affected However the ACOK signal may still go low to warn that there is an impending loss of output power The ACOK signal will return to the high...

Page 8: ...oltage Temperature de ratings apply to both input and output modules while line de ratings apply only to the input module For temperature the de rating for both input and output modules is 2 5 of maxi...

Page 9: ...oad on each output 1 Define load efficiencies for each output module at the specified load and 220V 2 Define change in efficiency from 220Vrms to 160Vrms for each output module 3 Sum the values from s...

Page 10: ...t Slot A D 9 GINH2 Group 2 inhibit Slot E F 10 ACOK1 AC mains signal 10 ACOK2 AC mains signal 11 5V1 Global 5V Bias 11 5V2 Global 5V Bias 12 COM1 Common 12 COM2 Common All of the signals are reference...

Page 11: ...rnally connected through an opto isolator to the group signals circuit which buffers the signal through a PNP transistor with a 10k pull down resistor as shown The LED on the front of each module give...

Page 12: ...triggered To shut down the PSU during normal operation 5V must be applied for a minimum of t1 then released After a period of t2 the main outputs will shut down but the bias voltages 5V1 and 5V2 will...

Page 13: ...of an output module fault the modules are protected against excessive output voltages This is implemented as a fixed voltage threshold VOVP in the table above and if the output voltage exceeds this th...

Page 14: ...being less than the specified average power rating including any input derating due to temperature or line voltage The available peak power is a function of the output voltage and maximum current for...

Page 15: ...cifications and then reconnect the AC input voltage Note that no warning is given on the AC_OK signal for faults of this type Transient Response The NEVO output modules have been especially designed t...

Page 16: ...ontrol method However care must be taken to ensure the output voltage does not exceeed the OVP level as this is considered a safety hazzard and will latch the entire unit off To determine the level of...

Page 17: ...nected the output current can then be modulated by applying a control voltage as described above Note that the power good threshold level is fixed and defined by the manually preset voltage Hence whil...

Page 18: ...is reduced to benign levels During system design care must be taken to ensure power cables have a sufficiently low voltage drop at maximum load current to ensure this protection does not activate uni...

Page 19: ...t control is possible with series connected output modules using the advanced V control and I control functions described earlier However individual control of each module can be complex as the variou...

Page 20: ...voltage will drop to the level of the next highest adjusted module and that module will begin to supply the load current while the first module continues delivering full current This process repeats f...

Page 21: ...rent output signal I control can still be used to measure the output current but it must be scaled by N where N is the number of paralleled modules Paralleling Across Multiple Chassis Paralleling acro...

Page 22: ...will help reduce noise pickup in the sense lines N 1 Configurations When using N 1 redundant configurations a suitably rated diode or controlled MOSFET must be used on each output to prevent a device...

Page 23: ...joining all ICONTROL and COM pins together but directly applying an external control voltage would override the current share signal and force the outputs to operate in normal parallel mode Instead i...

Page 24: ...put voltage for 2 minutes remove the faulty output module and reconnect the AC input voltage Note that no warning is given on the AC_OK signal for faults of this type Over Current Protection OCP For i...

Page 25: ...en reconnect the AC input voltage Note that no warning is given on the AC_OK signal for faults of this type Transient response The NEVO Dual output modules have been especially designed to have high r...

Page 26: ...er Limited Unit 2 Red Cow Interchange Estate Ballymount Dublin 22 D22 Y8H2 Ireland T 353 1 4591161 www vox power com Isolation Each output channel in a Nevo Dual output module is fully isolated Each o...

Page 27: ...er Limited Unit 2 Red Cow Interchange Estate Ballymount Dublin 22 D22 Y8H2 Ireland T 353 1 4591161 www vox power com Audible Noise The following series of plots characterise the audible noise from the...

Page 28: ...MODULAR CONFIGURABLE POWER SUPPLIES User Manual Page 28 of 40 DOC MN 006 03 NEVO 1200 User Manual Vox Power Limited Unit 2 Red Cow Interchange Estate Ballymount Dublin 22 D22 Y8H2 Ireland T 353 1 459...

Page 29: ...ing MECHANICAL DIMENSIONS AND MOUNTING SCREWS SCREWS LOCATION DETAILS PENETRATION TIGHTENING MOUNTING M4 x 4 4mm max including chassis 0 55 NM OUTPUT MODULES M3 x 5 Countersink Posi 16 Places Defined...

Page 30: ...6 Inhibit 7 Power Good Slot D and H 8 Inhibit 9 Global Inhibit 10 AC OK 11 5V 1A Bias Supply 12 COM J6 1 Common 2 5V 500mA Bias Supply 3 Shut Down 4 Reserved 5 Reserved 6 Reserved REF DETAILS MANUFAC...

Page 31: ...the outer surface of the power supply may be hot Allow the power supply to cool down sufficiently before handling it Remove all other connections from the power supply If the power supply is mounted o...

Page 32: ...EP 4 Once the output modules are inserted and the new configuration is complete the lid can be closed again A blanking plate must always be used whenever a slot does not contain an output module It is...

Page 33: ...wer supply is configured for the first time or if it has to be moved to a different location prior to operation switch off the supply power and remove the mains power cable from the power supply Ensur...

Page 34: ...or more modules in series please see the Series Connected Outputs section in the Nevo Series Installation Notes Paralleled Connected Output Modules NEVO single output modules of the same type can be...

Page 35: ...5 above into consideration Remove the Nevo 1200S Front End from the packaging At this point there are no output modules and no blanking plates OP0 installed Remove the screws as shown below At the fan...

Page 36: ...nfiguration requires 1 OP1 module into Slot A Slot B Slot C and Slot D 1 OP2 module into Slot E 1 OP3 module in Slot E and 1 OP4 module into Slot F OP4 OP3 OP2 OP1 OP1 OP1 OP1 The Blanking Plate is in...

Page 37: ...xample 1 above In order to create a single output capable of delivering up to 100A the four OP1 modules in Slot A to Slot D should be connected in parallel Connect the negative parallel link between t...

Page 38: ...n Voltage Input to Output 4000 Vac Input to Chassis 1500 Vac Output to Chassis 250 Vdc Output to Output 250 Vdc Isolation Clearance Primary to Secondary Reinforced 7 mm Primary to Chassis Basic 2 5 mm...

Page 39: ...und plate with suitably rated 100nF capacitors can assist in reducing emissions Both input and output cables should be fixed as close as possible to the ground plate or metal enclosure Also input and...

Page 40: ...2 Red Cow Interchange Estate Ballymount Dublin 22 D22 Y8H2 Ireland T 353 1 4591161 www vox power com Reliability The NEVO 1200 series has undergone extensive testing including HALT and Environmental...

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