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Troubleshooting

For detailed troubleshooting of the PH20 system please refer to the CMM support knowledgebase (www.renishaw.com/cmmsupport) or contact your local Renishaw office.

PH20 system status indicator LEDs

The head incorporates two LEDs for status indication in various modes, located as illustrated below.

PH20 head LEDs

LED

Servo LED

Probe LED

Off

No power (probe LED also off)

Probe triggered or module removed

Green

Servos on

Probe seated

Red

Servos off

Probe inhibited

Flashing red

Power, no comms

n/a

Amber

'Soft engage' mode*

n/a

* The ‘Soft engage' is a fault condition where the PH20 head uses a weak motor drive and can be manually rotated to prevent damage.

Head comms signal booster box indicator LEDs

PH20 booster box LED labels

There are three LEDs on the head comms signal booster box that can be used for basic fault indication.

LED

POWER

FROM UCC

FROM HEAD

Off

No system power
HCSB not connected to UCC or UCC powered down

No comms from UCC
Downloadable isn't running
Check cable and system software

No comms from head and / or UCC or downloadable isn't running
Check cable and check system software

Green

Normal operation

n/a

n/a

Flashing green

n/a

Comms OK from UCC

Comms OK from head

Flashing red

n/a

Comms error from UCC - check cable to UCC

Comms error from head - check cable to head