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PHC10-3 Interface switch descriptions
HCU1 operation
When the system is used in conjunction with an HCU1 hand control unit, the probe damp and probe reset buttons on the HCU1 are active.
The probe reset button will pulse the PPOFF PICS line when pressed, but only while the system is in manual mode. The probe damp button will toggle the PDAMP PICS line when pressed, but only while the system is in manual mode. Both the probe reset and probe damp buttons on the HCU1 can be made inactive by use of a switch on the rear panel of the PHC10-3.
| Switch | Description | Position | |
| 8 | Operation of HCU1 probe | UP | Enabled |
| 8 | Damping and probe reset | DOWN | Disabled |
Probe reset time
The extended probe reset timer on the PHC10-3 unit is designed to be used where the touch probe fails to remain seated following a head index move. E.g, when using long extension bars.
| Switch | Description | Position | |
| 10 | Time permitted for probe to reseat following a head index | UP | Level 2 (extended) |
| 10 | Time permitted for probe to reseat following a head index | DOWN | Level 1 (standard) |
Interface connection
| Switch | Description | Position | |
| 11 | Probe connection | UP | PICS or 7-pin DIN operation: the PHC10-3 internal inhibit realy disables the interface during a head index |
| 11 | Probe connection | Down | 5-pin DIN operation only: the PHC10-3 internal inhibit relay disables the probe during a head index |
Output configuration
The PHC10-3 can be connected to a probe interface via the PICS connection or via the Raw Probe connection (7 pin DIN connector).
| Switch | Description | Switch Position | |
| 12 | Probe output configuration | UP | PICS |
| 12 | Probe output configuration | DOWN | DIN |
Probe wire isolation
The probe wires need to be isolated from the machine cable wiring when used with multiwire systems. This is controled by switch 13.
| Switch | Description | Switch Position | |
| 13 | for use with machine cable | UP | machine cable |
| 13 | multiwire option for use with the new PL172 | DOWN | Multi wire |
The PHC10-3 will assert STOP under the following conditions:
Condition | Notes |
Overload error | The head has been overloaded while locked, causing it to unlock. |
Obstruct error | The head has been obstructed while moving to the requested position and is unable to reach that position, or is unable to lock into it. |
Head disconnect | STOP will be asserted for two seconds if the head is disconnected. It is reset after this period. |
Power failure | The stop signal will be permanently asserted if mains power is removed from the PHC10-3. |
USB cable disconnected | PICS STOP will be asserted if using USB and the cable is removed during operation. |
The reaction to assertion of PICS STOP to the system and effect of the signal removal are detailed below:
System state | Reaction | Removal of external STOP |
STOP asserted on power up. Head locked. | Normal system start up. Head will report its position. | Head movement commands accepted. |
System in manual mode. Manual movement initiated by HCU1 after STOP asserted. | Single step manual movement only. Continuous movement disabled. Head can be moved slowly as a 'safeguard movement'. Head will lock up as normal when movement key released. | Continuous movement enabled. |
System in manual mode. STOP asserted during manual move by HCU1. | Continuous head movement immediately disabled. Head will continue to move in single steps. Head will lock up as normal when movement key released. | Continuous movement enabled. |
System in automatic mode. STOP asserted before update command received. | PHC10-3 will not unlock or index the head. | Normal system operation resumed. |
System in automatic mode. STOP asserted during a head move. | Power immediately removed from axis motors. Motors braked. | An update command will cause the head to complete its move |