Delta Tau GEO MACRO DRIVE User Manual download pdf (Page 153)

Geo MACRO Drive User and Reference Manual

Geo Macro Drive MI-Variable Reference 141

If bit 0 (value of 1) is set to 1, then if the digital quadrature encoder-loss detection circuit for the encoder

wired into X1 (“Encoder 1”) reports a loss, the second motor will be shut down. If bit 0 is set to 0, there

will be no reaction to this circuit reporting a loss.

If bit 1 (value of 2) is set to 1, then if the digital quadrature encoder-loss detection circuit for the encoder

wired into X2 (“Encoder 2”) reports a loss, the second motor will be shut down. If bit 1 is set to 0, there

will be no reaction to this circuit reporting a loss.

If bit 2 (value of 4) is set to 1, then if the analog sinusoidal encoder-loss detection circuit for the encoder

wired into X1 (“Encoder 1”) reports a loss, the second motor will be shut down. If bit 2 is set to 0, there

will be no reaction to this circuit reporting a loss.

If bit 3 (value of 8) is set to 1, then if the analog sinusoidal encoder-loss detection circuit for the encoder

wired into X2 (“Encoder 2”) reports a loss, the second motor will be shut down. If bit 3 is set to 0, there

will be no reaction to this circuit reporting a loss.

As only one type of encoder can be wired into a given connector, at most one of the bits for that connector

should be set to 1.

Encoder-loss faults are reported back to the Turbo PMAC over the MACRO ring as “amplifier fault”

conditions. The Turbo PMAC motor controlling this Geo MACRO motor must be set to react to

amplifier fault conditions (bit 20 of Ixx24 must be set to the default of 0) in order for Turbo PMAC to

react to these encoder-loss conditions. Bits 21 and 22 of Ixx24 on the Turbo PMAC will control the

effect on other motors of a detected encoder loss on this motor.

Examples:

• For no encoder-loss shutdown: MI108=0

• For Motor 2 shutdown on loss of digital quadrature on Encoder 2: MI108=2

• For Motor 2 shutdown on loss of analog sinusoid on Encoder 2: MI108=8

Note:

MS{node},MI107 and MI108 were added in Geo MACRO firmware versions

1.006 and above.

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Delta Tau GEO MACRO DRIVE User Manual Page 153