Editing Argon supply voltage troubleshooting
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*[[Safe torque off|STO1]] input is not powered by 24 VDC | *[[Safe torque off|STO1]] input is not powered by 24 VDC | ||
*Drive's internal fuse has blown. To check this [[Argon user guide/Power supply safe discharging|safely discharge drive]], remove cover, remove fuse and measure fuse resistance. If high current & power is demanded from the drive, then a higher amperage fuse may be installed in the place of original. Maximum fuse size is 16A slow blow and the factory default is between 6.3-8 A slow blow. | *Drive's internal fuse has blown. To check this [[Argon user guide/Power supply safe discharging|safely discharge drive]], remove cover, remove fuse and measure fuse resistance. If high current & power is demanded from the drive, then a higher amperage fuse may be installed in the place of original. Maximum fuse size is 16A slow blow and the factory default is between 6.3-8 A slow blow. | ||
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==Drive internal AC circuity== | ==Drive internal AC circuity== | ||
[[File:Argon ac input.png|800px]] | [[File:Argon ac input.png|800px]] | ||
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Inrush current limiter is based on a resistor which is bypassed by a [[GraniteCore]] controlled relay after HV DC supply has risen near nominal levels. | Inrush current limiter is based on a resistor which is bypassed by a [[GraniteCore]] controlled relay after HV DC supply has risen near nominal levels. | ||
− | Verifying internal [[HV DC bus]] voltage can be done by reading the voltage value from Granity Testing tab | + | Verifying internal [[HV DC bus]] voltage can be done by reading the voltage value from Granity Testing tab or by measuring DC voltage between VP and VN terminals. |
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==Checking for AC to HV DC signal path components== | ==Checking for AC to HV DC signal path components== | ||
− | {{Electricshock|Before proceeding with the tests, make sure drive has been safely discharged for at least | + | {{Electricshock|Before proceeding with the tests, make sure drive has been safely discharged for at least 10 minutes before opening it. See more info [[Power supply safe discharging|here]].}} |
===STO1=== | ===STO1=== | ||
− | Applying 24V voltage to STO1 inputs causes the STO relay to emit a relay | + | Applying 24V voltage to STO1 inputs causes the STO relay to emit a relay click sound. If there is no sound, then the reason is related to STO1 relay or it's control. |
===Fuse F1=== | ===Fuse F1=== | ||
− | Open drive case and check conductivity of fuse F1. | + | Open drive case and check conductivity of fuse F1. |
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===Inrush current limiter resistor R7=== | ===Inrush current limiter resistor R7=== | ||
− | R7 is a 5W | + | R7 is a 5W 33 ohm resitor that conducts current to charge bulk capacitors. After capacitors are charged to full, relay RL2 is closed to allow high current flows. |
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+ | R7 can be measured with multimeter from test points marked in the image. | ||
+ | [[File:Argoninrushlimiter.jpg|thumb|Resistance measurement points inside Argon]] | ||
===AC/DC rectifier bridge B3=== | ===AC/DC rectifier bridge B3=== | ||
Measuring condition of B3 is possible with multimeter's diode check function. Check all four diodes from the test points marked in the image. Multimeter red lead goes to anode and black to cathode. All diodes should give reading of 0.4 to 0.5 Volts. | Measuring condition of B3 is possible with multimeter's diode check function. Check all four diodes from the test points marked in the image. Multimeter red lead goes to anode and black to cathode. All diodes should give reading of 0.4 to 0.5 Volts. | ||
− | [[File:Argondiodebridge.jpg|thumb|Diode bridge | + | [[File:Argondiodebridge.jpg|thumb|Diode bridge measurement points circled]] |
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