Difference between revisions of "Argon user guide/J5 connector electrical interfacing"
From Granite Devices Knowledge Wiki
[checked revision] | [checked revision] |
(→Analog input) |
(→Digital input) |
||
Line 54: | Line 54: | ||
===Digital input=== | ===Digital input=== | ||
[[File:gpi.png|thumb|Simplified digital input circuity inside the drive. Left side end represents J5 pins and right side continues to drive internal circuits. D27 protects optocoupler from reverse polarity and ESD.]] | [[File:gpi.png|thumb|Simplified digital input circuity inside the drive. Left side end represents J5 pins and right side continues to drive internal circuits. D27 protects optocoupler from reverse polarity and ESD.]] | ||
+ | Digital inputs are optoisolated (floating potential) inputs for general purpose control signals. | ||
+ | ;Electrical properties | ||
+ | *Signal voltage range 3-24V | ||
+ | *Logic 0 when difference between +/- inputs less than 1.5V, logic 0 when more than 2.9V | ||
+ | *Current needed to drive logic 1 is 0.8-9 mA depending on input voltage | ||
+ | *Maximum voltage difference between +/- inputs 27 VDC | ||
+ | *Maximum voltage difference between +/- inputs vs GND 120 VDC | ||
+ | {{caution|Isolation is only functional and does not provide safety insulation. Use only with [http://en.wikipedia.org/wiki/Extra-low_voltage ELV circuits].}} | ||
+ | ;Connection to electromechanical switch or relay | ||
+ | [[File:gpiswitch.png|thumb|Connection from electromechanical switch or relay to isolated digital input. PSU may be external power supply or 5V supply from J4 connector.]] | ||
+ | *Connect switch contacts in series with | ||
+ | |||
[[Category:Argon]] | [[Category:Argon]] | ||
[[Category:Setup guides]] | [[Category:Setup guides]] | ||
[[Category:Unfinished]] | [[Category:Unfinished]] |
Revision as of 19:12, 14 June 2013
This article explains the internal circuity behind J5 connector of Argon servo drive.
Exceeding ratings may affect drive operation and cause instability or even damage the drive. |
Contents
Pin electrical categories
Supply
Supply pins output a regulated 5V voltage to external circuits. GND pin is tied to J3 connector V- terminal.
- Electrical properties
- Output voltage 4.9-5.2 V
- Maximum load 500 mA
- Maximum injected current -10 mA
Never connect multiple supply outputs parallel. Supply output may be connected only current consuming circuity to prevent current injection to the supply port. |
High speed digital input
HSIN is differential digital input capable of receiving digital signals up to 4 MHz.
- Electrical properties
- Maximum voltage to +/- pins referenced to GND: -0.5 to 6V. Nominal 3.3 or 5.0V.
- Maximum injected current +/- 10 mA
- When negative input (-) is left floating, it floats around 2.5V
- Input state is logic 1 when voltage on positive pin is greater than voltage on negative pin, otherwise it's logic 0
- Wiring when driving using differential source
- Positive (+) inputs: to positive outputs of source
- Negative (-) inputs: to negative outputs of source
- GND must be connected to source ground
- Wiring when driving using single ended source (TTL, CMOS or open collector)
- Positive (+) inputs: to outputs of source
- Negative (-) inputs: leave floating
- GND must be connected to source ground
Analog input
Analog input accepts ±10V from and may be used as reference signal.
- Electrical properties
- Input impedance ~10 kΩ
- Maximum +/- pin voltage vs GND ±20V
- Maximum injected current ±10 mA
- Sampling resolution 12 bits
- Wiring to differential signal source
- Connect positive output to positive input
- Connect negative (inverted) output to negative input
- Connect source ground to GND
- Wiring to single ended signal source
- Connect output to positive input
- Connect source ground to negative input
- Connect source ground to GND
Digital output
Digital input
Digital inputs are optoisolated (floating potential) inputs for general purpose control signals.
- Electrical properties
- Signal voltage range 3-24V
- Logic 0 when difference between +/- inputs less than 1.5V, logic 0 when more than 2.9V
- Current needed to drive logic 1 is 0.8-9 mA depending on input voltage
- Maximum voltage difference between +/- inputs 27 VDC
- Maximum voltage difference between +/- inputs vs GND 120 VDC
Isolation is only functional and does not provide safety insulation. Use only with ELV circuits. |
- Connection to electromechanical switch or relay
- Connect switch contacts in series with