Editing Intensify Nx50 setup guide
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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]]. | ||
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==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 | + | [[File:IntensifyEfficiency.png|thumb|right|300px|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 | + | 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 reference. |
In most cases Nx50 is sufficiently cooled with '''natural convection'''. This is best achieved by mounting boards vertically and leaving at least 25 mm free air space around both sides. | In most cases Nx50 is sufficiently cooled with '''natural convection'''. This is best achieved by mounting boards vertically and leaving at least 25 mm free air space around both sides. | ||
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==Wiring== | ==Wiring== | ||
− | + | ===CMD connector=== | |
− | === | + | CMD 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. |
− | + | ||
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]]. | ||
− | ==== | + | ====CMD pin out==== |
− | + | ||
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
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| 1 || PULSE || In || Pulse control: | | 1 || PULSE || In || Pulse control: | ||
*When LOW or open, output current is 100% of ISET | *When LOW or open, output current is 100% of ISET | ||
− | *When HIGH, output current is | + | *When HIGH, output current is 5% of ISET |
− | || | + | || 20 kOhm |
|- | |- | ||
− | | 2 || | + | | 2 || GNDA|| || Analog ground || 0 Ohm |
|- | |- | ||
− | | 3 || IMON|| Out ||Current monitor | + | | 3 || IMON+|| Out ||Current monitor positive output (differential) || 10 kOhm |
|- | |- | ||
− | | 4 || | + | | 4 || IMON-|| Out ||Current monitor negative output (differential) || 50 kOhm |
|- | |- | ||
− | | 5 || VMON|| Out||Voltage monitor | + | | 5 || VMON+|| Out||Voltage monitor positive output (differential) || 10 kOhm |
|- | |- | ||
− | | 6 || | + | | 6 || VMON-|| Out|| Voltage monitor negative output (differential) || 10 kOhm |
|- | |- | ||
− | | 7 || ISET+|| In||Current setpoint | + | | 7 || ISET+|| In||Current setpoint positive input (differential) || 50 kOhm |
|- | |- | ||
− | | 8 || ISET-|| In||Current setpoint | + | | 8 || ISET-|| In||Current setpoint negateive input (differential) || 50 kOhm |
|- | |- | ||
| 9 || ENABLE|| In||LDD enable: | | 9 || ENABLE|| In||LDD enable: | ||
− | *When | + | *When LOW, LDD output enabled |
− | *When | + | *When HIGH or open, LDD output disabled |
− | || | + | || 1 kOhm |
|- | |- | ||
− | | 10 || GND|| | + | | 10 || GND|| || Power & digital ground || 0 Ohm |
|} | |} | ||
====Impedances==== | ====Impedances==== | ||
− | When driving an | + | When driving an CMD input pin, the source impedance of controller should be significantly lower than input impedance of the corresponding pin. I.e. if input impedance is 50 kOhm, then recommended source impedance is 500 Ohm max. Lower source impedance yields lower voltage drop error. |
− | Also when an output of | + | Also when an output of CMD is connected to the input of controller, the controller input impedance should be significantly higher than CMD pin impedance. I.e. when connecting VMON (10 kOhm) to analog input or ADC, the controller input impedance should be at least 1 MOhm. However all outputs are short circuit proof and input impedance recommendation affects only monitor accuracy. |
See impedance column of pin out table | See impedance column of pin out table | ||
Line 69: | Line 63: | ||
! State !! Voltage range | ! State !! Voltage range | ||
|- | |- | ||
− | | Logic LOW|| -0.3 .. 0.6V | + | | Logic LOW|| -0.3 .. 0.6V (achievable by connecting to GND) |
|- | |- | ||
− | | Logic HIGH|| | + | | Logic HIGH|| 3.0 - 7.0 V (achievable by floating pin) |
|} | |} | ||
====Analog signals==== | ====Analog signals==== | ||
− | Analog input | + | Analog input & output signals support [[differential signaling]] to cancel noise and ground loop induced error. These are designed to be compatible with another differential source as well as single ended systems. |
Connection to '''differential''' 0-10V analog I/O: | Connection to '''differential''' 0-10V analog I/O: | ||
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
− | ! Controller !! | + | ! Controller !! CMD signal |
|- | |- | ||
− | | Analog in 1 +|| IMON | + | | Analog in 1 +|| IMON+ |
|- | |- | ||
− | | Analog in 1 - || | + | | Analog in 1 - || IMON- |
|- | |- | ||
− | | Analog in 2 + || VMON | + | | Analog in 2 + || VMON+ |
|- | |- | ||
− | | Analog in 2 - || | + | | Analog in 2 - || VMON- |
|- | |- | ||
| Analog out 1 + || ISET+ | | Analog out 1 + || ISET+ | ||
Line 99: | Line 93: | ||
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
− | ! Controller !! | + | ! Controller !! CMD signal |
|- | |- | ||
− | | Analog in 1 || IMON | + | | Analog in 1 || IMON+ |
|- | |- | ||
− | | Analog in 2 || VMON | + | | Ground || IMON- |
+ | |- | ||
+ | | Analog in 2 || VMON+ | ||
+ | |- | ||
+ | | Ground || VMON- | ||
|- | |- | ||
| Analog out 1 || ISET+ | | Analog out 1 || ISET+ | ||
Line 111: | Line 109: | ||
| Ground || GND | | Ground || GND | ||
|} | |} | ||
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===Power=== | ===Power=== | ||
A regulated 12VDC power supply should be connected to hole terminals labeled '''GND''' and '''+12V'''. Required power is nearly directly proportional to output power plus losses. | A regulated 12VDC power supply should be connected to hole terminals labeled '''GND''' and '''+12V'''. Required power is nearly directly proportional to output power plus losses. | ||
Line 117: | Line 114: | ||
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 | + | Laser diode is connected to hole terminals labeled '''O+''' and '''O-'''. O+ goes to LD anode and 0- to cathode. |
==Connecting parallel== | ==Connecting parallel== | ||
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==Usage== | ==Usage== | ||
− | + | ===Basic usage=== | |
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===Pulsed usage=== | ===Pulsed usage=== | ||
− | + | ===Monitoring=== | |
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