CPI CMP 200 Series Service Manual page 74

CPI Canada Inc.
3C.2.2 Outputs (Cont)
NOTE: The generator is factory configured to supply 110 VAC to drive the Buckys. The Bucky outputs may be
reconfigured to supply 24 VDC or 220 VAC if required, as described in chapter 8. Please confirm
compatibility with the Buckys used in this installation before proceeding. For tomo operation, the
applicable Bucky outputs must be programmed as necessary.
IN SOME INSTALLATIONS, BUCKY START RELAYS K1 OR K3 ON THE H.V. AUXILIARY BOARD MAY
DRIVE THE INPUTS OF OPTO COUPLERS OR OTHER LOW CURRENT DEVICES ON THE BUCKY. THE
LEAKAGE CURRENT THROUGH THE R-C SNUBBER THAT IS CONNECTED ACROSS THE RELAY
CONTACTS (C3 AND R2 FOR K1, C10 AND R15 FOR K3) MAY BE SUFFICIENT TO ENERGIZE THE
BUCKY INPUTS WHEN THE RELAYS ARE OPEN.
IF THIS IS EXPERIENCED, THE SNUBBER SHOULD BE DEFEATED. REMOVING THE SERIES
RESISTOR, PART OF THE R-C SNUBBER, WILL ELIMINATE THIS PROBLEM.
Removing R2 open-circuits the snubber across the K1 contacts, removing R15 defeats the snubber
across the contacts of K3.
Use and disclosure is subject to the restrictions on the title page of this CPI document.
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CMP 200 X-Ray Generator Service Manual Ch # 901476-04 Rev. C
Interfacing and Programming
3C
Page 3C-5