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SPA3 troubleshooting
Fatal faults
The SPA3 monitors internal operational functions. If any of these reach a defined level where the system believes it is dangerous to operate a fatal fault will be applied.
When a fatal fault is detected it is not possible to engage the servo system. There may be other faults that prevent the CMM from engaging.
| Reported fatal fault | Possible cause |
|---|---|
Emergency stop | Emergency stop system activated |
Air pressure | Air pressure low |
Crash | Crash switch activated |
Scale failure | Scale readhead failed |
Overspeed | The position demand has exceeded an internal defined limit |
Over temperature shutdown
The SPA3 unit is designed for continuous power of up to 800 W. The unit will allow a supply current consumption of up to 12 A, which at 80 V is 960 W for a short period of time (1 second).
If this is sustained for a prolonged period, or the unit is not used in an adequate environment (such as one with poor ventilation or high ambient temperature) the unit will disengage the motors to protect itself. An over temperature warning will be reported to UCCserver.
SPA3 visual diagnostics
A visual indication of the system status is provided by three LEDs on the front panel, providing assistance in diagnosing and rectifying system faults.
LED status key
| Description |
|---|---|
 | LED on |
 | Red flash |
 | Green flash |
 | Alternating green and red flash |
 | LED off |
 | Any condition |
| Servo status | Probe seated | Error | Description |
|---|---|---|---|
| | | No power to SPA3 |
 | | | UCC2 connected, waiting for download, or not connected to a controller |
| | | E-STOP active, or power amp has a fault |
| | | UCC connected, waiting for download, or download failed |
 | | | Amps not engaged and no amp fault |
 | | | Amps engaged |
| | | Dynamic braking |