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. | ||
Line 18: | Line 14: | ||
==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" | ||
|- | |- | ||
Line 31: | Line 25: | ||
| 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 71: | Line 65: | ||
| Logic LOW|| -0.3 .. 0.6V | | Logic LOW|| -0.3 .. 0.6V | ||
|- | |- | ||
− | | Logic HIGH|| | + | | Logic HIGH|| 3.0 - 7.0 V |
|} | |} | ||
====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. The differential signals allow up to +/- 1.5V difference on ground reference potentials between Nx50 and controller without losing accuracy. |
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 117: | Line 115: | ||
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== | ||
− | + | To be written | |
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==Usage== | ==Usage== | ||
− | The device starts operating instantly after powered and and proper signals fed to | + | The device starts operating instantly after powered and and proper signals fed to CMD pins. No other initialization needed and no special start-up sequences required. |
===CW usage=== | ===CW usage=== | ||
Line 138: | Line 127: | ||
*LD connected between O+/O- | *LD connected between O+/O- | ||
*12VDC supply connecter between +12V/GND | *12VDC supply connecter between +12V/GND | ||
− | * | + | *CMD connector pins: |
− | ** | + | **GNDA connected to controller's ground reference: |
**0-10V current setpoint signal fed to ISET+/ISET- | **0-10V current setpoint signal fed to ISET+/ISET- | ||
− | **ENABLE set to | + | **ENABLE set to LOW or tied to GNDA |
− | ;Optional | + | ;Optional CMD connections: |
− | *IMON wired to analog input | + | *IMON+/IMON- wired to analog input |
− | *VMON wired to analog input | + | *VMON+/VMON- wired to analog input |
*PULSE set to HIGH or left open | *PULSE set to HIGH or left open | ||
===Pulsed usage=== | ===Pulsed usage=== | ||
− | |||
− | |||
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 142: | ||
*LD connected between O+/O- | *LD connected between O+/O- | ||
*12VDC supply connecter between +12V/GND | *12VDC supply connecter between +12V/GND | ||
− | * | + | *CMD connector pins: |
− | ** | + | **GNDA connected to controller's ground reference: |
**0-10V current setpoint signal fed to ISET+/ISET- | **0-10V current setpoint signal fed to ISET+/ISET- | ||
− | **ENABLE set to | + | **ENABLE set to LOW or tied to GNDA |
− | **PULSE set pulse source. Logic LOW means 100% of set current and HIGH reduces output current to | + | **PULSE set pulse source. Logic LOW means 100% of set current and HIGH reduces output current to 5% (bias current to allow faster rise time) |
− | ;Optional | + | ;Optional CMD connections: |
− | *IMON wired to analog input | + | *IMON+/IMON- wired to analog input |
− | *VMON wired to analog input | + | *VMON+/VMON- wired to analog input |
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