Renishaw UCC2, Руководство по установке

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The controller's 24 V supply
This supply is available at both the servo power amplifier connector and the machine's I/O connector for use by the CMM signalling circuits. It
has low current rating, see "Machine I/O connector" , and is thus not suitable for heavy loads.
Please use semiconductors or relays to interface with high power loads or to those which need electrical isolation.
All inputs and outputs (excepting the optically isolated amp control signals) are referenced to this supply.
It is not a floating supply, the 24 V return line is connected to the controller's chassis and to the mains supply protective ground at a star point
within the controller.
If there are any interconnections between this supply and any of the CMM's supplies, there is a possibility that an additional path to ground
may be created.
A separate supply of similar voltage may be used for signalling purposes in place of the controller's 24 V supply but its negative rail must be
connected to the controller's 24 V return line.
Motor engagement via SPA connector
The controller will begin to engage the servo motors when instructed to do so by the host computer, if all the operating functions are in a safe
or acceptable condition.
Listed below are possible causes for the motor engagement to fail:
The system has not yet been configured for motion (i.e. the machine, servo and move parameters have not been sent to the controller)
A fatal fault has been detected
The emergency stop system has been activated
A PICS ‘stop' signal is detected within the system
The amplifier OK signal not asserted
An open limit switch
A present or previously present scale reading fault
The process is in two stages, amplifier enabling and contactor energising, with protective delays between each stage.
Amplifier enabling
The ‘amps OK' signal produced by the amplifier control circuits is an indication to the UCC2 controller that the servo power amplifiers are not
faulty.
The controller will first ensure that all its motor demand signals are zero and will then try to enable the power amplifiers by asserting the
‘enable amps‘ signal ﴾servo power amplifier connector pin 4 or 5, figure 1 ). See chapter 6 for its electrical ratings.
This “enable amps”, signal will be held on for 0.1 second to allow the ‘amps OK' signal, from the servo power amplifier, to become valid. If this
signal does not become valid (i.e. pin 19 of the machine I/O connector is not pulled low) the controller will abandon the engagement process.
If no error is detected then the controller will wait for a further period of 1 second before beginning the next stage, to allow the amplifiers to
settle after any initial transients.
Figure 1 is an example of the recommended circuits that can be used to drive the power amplifier enable inputs and to generate the amps OK
signal shown. The circuits that are used in the installation will vary depending on the amplifiers' requirements but must pull the ‘amps OK'
input (pin 19) down if all amplifiers are operating correctly.
UCC2 and UCC2-2 installation guide
www.renishaw.com
Issued 07 2021
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