Editing Intensify Nx50 setup guide

Jump to: navigation, search

Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.

The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.

This page supports semantic in-text annotations (e.g. "[[Is specified as::World Heritage Site]]") to build structured and queryable content provided by Semantic MediaWiki. For a comprehensive description on how to use annotations or the #ask parser function, please have a look at the getting started, in-text annotation, or inline queries help page.

Latest revision Your text
Line 3: Line 3:
  
 
In case of any questions, please don't hesitate to [[Granite Devices support|contact us]].
 
In case of any questions, please don't hesitate to [[Granite Devices support|contact us]].
 
{{pdfbook|Nx50 user guide is also available at PDF book snapshot. However following this web Wiki is recommended instead of PDF book for the latest and most complete information. [[Media:Intensify Nx50 manual.pdf|Download PDF]].}}
 
 
{{info|Pre-production version of Nx50 setup guide can be found [[http://granitedevices.com/w/index.php?title=Intensify_Nx50_setup_guide&stableid=1748 here]]. Please note that some I/O signal characteristics and pin out has changed.}}
 
 
==Physical installation and cooling==
 
==Physical installation and cooling==
 
Nx50 should be mounted inside an enclosure by using spacer feet attached to the four corner holes.
 
Nx50 should be mounted inside an enclosure by using spacer feet attached to the four corner holes.
  
[[File:IntensifyEfficiency.png|290px|thumb|right|Nx50 (single board) efficiency vs load current at various laser diode forward voltages]]
+
[[File:IntensifyEfficiency.png|thumb|right|Nx50 (single board) efficiency vs load current at various laser diode forward voltages]]
 
Nx50 has low power losses due to highly efficient multiphase switching converter technology. Power loss can be calculated by using the offered efficiency data as setpont.  
 
Nx50 has low power losses due to highly efficient multiphase switching converter technology. Power loss can be calculated by using the offered efficiency data as setpont.  
  
Line 18: Line 14:
  
 
==Wiring==
 
==Wiring==
Before wiring, review [[Intensify Nx50|Nx50 electrical specifications]].
 
 
===J1 connector===
 
===J1 connector===
 
J1 connector is the user side I/O of the driver. This connector contains the control and feedback signals. All signal lines of the port are ESD protected by dedicated suppressors.
 
J1 connector is the user side I/O of the driver. This connector contains the control and feedback signals. All signal lines of the port are ESD protected by dedicated suppressors.
Line 24: Line 19:
 
Mating connector type is a 10 pin flat ribbon cable connector with 0.1"/2.54 mm pin pitch and a polarity key. See spec sheet of compatible connector [[Media:idc10pin_connector.pdf|here]].
 
Mating connector type is a 10 pin flat ribbon cable connector with 0.1"/2.54 mm pin pitch and a polarity key. See spec sheet of compatible connector [[Media:idc10pin_connector.pdf|here]].
 
====J1 pin out====
 
====J1 pin out====
[[File:idc10pin.png|thumb|290px|10 Pin IDC connector pinout. Pin order is relative to the connector's polarity key.]]
+
[[File:idc10pin.png|thumb|10 Pin IDC connector pinout]]
 
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
Line 34: Line 29:
 
|| 10 kOhm
 
|| 10 kOhm
 
|-
 
|-
| 2 || GND|| I/O and power ground|| I/O and Analog ground || 0 Ohm
+
| 2 || GND|| || I/O and Analog ground || 0 Ohm
 
|-
 
|-
 
| 3 || IMON|| Out ||Current monitor 0-10 V analog output  || 1 kOhm
 
| 3 || IMON|| Out ||Current monitor 0-10 V analog output  || 1 kOhm
 
|-
 
|-
| 4 || GND|| I/O and power ground ||I/O and Analog ground  || 0 Ohm
+
| 4 || GND|| Out ||I/O and Analog ground  || 0 Ohm
 
|-
 
|-
 
| 5 || VMON|| Out||Voltage monitor 1:1 analog output  || 1 kOhm
 
| 5 || VMON|| Out||Voltage monitor 1:1 analog output  || 1 kOhm
 
|-
 
|-
| 6 || GND|| I/O and power ground  || 0 Ohm
+
| 6 || GND|| Out|| I/O and Analog ground  || 0 Ohm
 
|-
 
|-
 
| 7 || ISET+|| In||Current setpoint 0-10 V positive input (differential) || 51 kOhm
 
| 7 || ISET+|| In||Current setpoint 0-10 V positive input (differential) || 51 kOhm
Line 53: Line 48:
 
|| 6.6 kOhm
 
|| 6.6 kOhm
 
|-
 
|-
| 10 || GND|| I/O and power ground || I/O and Analog ground  || 0 Ohm
+
| 10 || GND|| || I/O and Analog ground  || 0 Ohm
 
|}
 
|}
  
Line 71: Line 66:
 
| Logic LOW|| -0.3 .. 0.6V  
 
| Logic LOW|| -0.3 .. 0.6V  
 
|-
 
|-
| Logic HIGH|| 4.5 - 26 V  
+
| Logic HIGH|| 3.0 - 26 V  
 
|}
 
|}
  
Line 117: Line 112:
 
For example outputting 40A to 2.0V diode equals output power of 80W. With losses the needed power is about 85-90W which equals 7.0-7.5A @ 12V.
 
For example outputting 40A to 2.0V diode equals output power of 80W. With losses the needed power is about 85-90W which equals 7.0-7.5A @ 12V.
 
===Laser diode===
 
===Laser diode===
Laser diode is connected to hole terminals labeled '''O+''' and '''O-'''. O+ goes to LD anode and O- to cathode.
+
Laser diode is connected to hole terminals labeled '''O+''' and '''O-'''. O+ goes to LD anode and 0- to cathode.
  
 
==Connecting parallel==
 
==Connecting parallel==
[[File:Nx50stack with text.jpg|thumb|Three Nx50 drives connected parallel by stacking with hex standoffs and ribbon cable with three IDC connectors|290px]]
+
Nx50 boards may be connected parallel by stacking them by using metallic standoffs to form conductive path between O+, O-, GND, and +12V terminals. J1 connector may be paralleled by inserting multiple 10 pin IDC connectors to the single ribbon cable. All J1 pins are connected parallel pin-to-pin basis.
Nx50 boards may be connected parallel to increase output current range simply by connecting all power and I/O lines parallel pin-by-pin basis.
+
 
+
This can be achieved by stacking them by using metallic standoffs to form conductive path between O+, O-, GND, and +12V terminals. Use M4, M5, 10-24, 8-36, or #8 threaded standoffs with minimum height of 16 mm / 0.63".
+
 
+
J1 connector may be paralleled by inserting multiple 10 pin IDC connectors to the single ribbon cable. By this method all J1 pins are properly connected parallel pin-to-pin basis.
+
===CMD connector output signals in parallel mode===
+
When mutliple boards are wired parallel, the output of current and voltage monitor pins will be the average of individual driver board values.
+
 
+
I.e. if we have three Nx50 in parallel with the setpoint set of 10V (which normally outputs 150A current), then current monitor output would also give 10V. If one of boards is in fault state (overtemperature etc), then output current would be only 100A (two boards driving, one inactive). In such condition the current monitor output would be 6.67V (the average of 10V, 10V and 0V).
+
  
 
==Usage==
 
==Usage==
The device starts operating instantly after powered and and proper signals fed to J1 pins. No other initialization is needed. Sequence order of signals and power are not critical - device will not get harmed or produce erratic output regardless of start-up order.
+
The device starts operating instantly after powered and and proper signals fed to J1 pins. No other initialization is needed.
  
 
===CW usage===
 
===CW usage===
Line 148: Line 134:
  
 
===Pulsed usage===
 
===Pulsed usage===
[[File:Intensify pulseon50A.png|290px||thumb|LD current rise from 2.5A to 50A when PULSE set to LOW]]
+
[[File:Intensify pulseon50A.png|thumb|LD current rise from 2.5A to 50A when PULSE set to LOW]]
[[File:Intensify pulseoff50a.png|290px|thumb|LD current fall from 50A to 2.5A when PULSE set to HIGH. Current typically dips to 0A temporarily.]]
+
[[File:Intensify pulseoff50a.png|thumb|LD current fall from 50A to 2.5A when PULSE set to HIGH. Current typically dips to 0A temporarily.]]
 
For pulsed usage it is recommended to use PULSE input or modulate the ISET analog voltage. It is not recommended to set current to 0 during off-periods for to achieve faster pulse rise times and zero overshoot. Recommended bias current during off-periods is 2-10% of current setpoint.
 
For pulsed usage it is recommended to use PULSE input or modulate the ISET analog voltage. It is not recommended to set current to 0 during off-periods for to achieve faster pulse rise times and zero overshoot. Recommended bias current during off-periods is 2-10% of current setpoint.
  
Line 155: Line 141:
 
*LD connected between O+/O-
 
*LD connected between O+/O-
 
*12VDC supply connecter between +12V/GND
 
*12VDC supply connecter between +12V/GND
*J1 connector pins:
+
*CMD connector pins:
 
**GND connected to controller's ground reference:
 
**GND connected to controller's ground reference:
 
**0-10V current setpoint signal fed to ISET+/ISET-
 
**0-10V current setpoint signal fed to ISET+/ISET-
Line 163: Line 149:
 
*IMON wired to analog input
 
*IMON wired to analog input
 
*VMON wired to analog input
 
*VMON wired to analog input
==Safety==
 
Nx50 enable or setpoint inputs should not be used as means of safety shutdown alone. If device is malfunctioning, any signal sent to CMD connector may be ineffective.
 
 
In the worst case, Nx50 hardware failure may cause the device to drive any current or voltage to the output pads (i.e. internal short circuit from power supply pads to output pads). Because of that, the recommended shut-down method is to cut the 12V supply voltage to the device. User of Nx50 should have method of detecting over current or unexpected laser radiation condition and perform the safety shut-down by powering off the Nx50.
 
{{warning|Do not rely on any CMD connector signal alone as safety shut-down method. Also make sure that even sudden fault condition of Nx50 is safely handled.}}
 
 
[[Category:Laser_diode_drivers]]
 
[[Category:Setup_guides]]
 

Please note that all contributions to Granite Devices Knowledge Wiki may be edited, altered, or removed by other contributors. If you do not want your writing to be edited mercilessly, then do not submit it here.
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource (see Granite Devices Knowledge Wiki:Copyrights for details). Do not submit copyrighted work without permission!

Select categories:

To edit this page, please answer the question that appears below (more info):

Cancel | Editing help (opens in new window)