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Installing the SPA1
4.1.4 Emergency stop
The service pack contains a 9-way D connector and backshell which fits the Emergency stop connector
from the SPA1.
This connector is of the solder bucket variety and should be fitted to the CMM wiring by a competent
technician or engineer.
4.1.5 Machine I/O connector
The service pack contains a 37-way D connector and backshell which connects to the cable linking the
UCC1 machine I/O connector and the SPA1 machine I/O connector.
This connector is of the solder bucket variety and should be fitted to the CMM wiring by a competent
technician or engineer.
4.2 Setting of the motor voltage
The SPA1 has the ability to drive either 24 V or 48 V motors, the factory settings for the unit is the 48 V
configuration.
The following procedure gives instructions to change the configuration of the SPA1 to permit a 24 V motor
voltage.
CAUTION
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It is essential that full anti-static precautions be taken before working within the SPA1 enclosure.
-
Before the SPA1 is opened up mains power to the SPA1 must be switched off.
-
The heat sink on the SPA drives could be warm to touch.
-
It is essential that full anti-static precautions be taken before working within the SPA1 enclosure.
-
The SPA1 unit contains components that store energy. After power has been removed the installation
engineer should wait a minimum of 30 seconds prior to working within the SPA1 enclosure.
1.
Remove AC supply from SPA1 and disconnect other system cables to CMM.
2.
Remove top panel of the SPA1 enclosure; ensure that all fixing screws are retained for future re-
assembly.
This is completed by removal of a screw from each side of the SPA1 unit towards the front of the
enclosure, and removal of the 5 screws across the top of the rear panel of the SPA1. Then the top of
the SPA1 can be removed by pulling upward on the lid of the unit.
