DC Slide PCBs
Inside every (Ross Hill) style DC module rides the DC slide — the drawout assembly whose printed circuit boards turn the driller's commands into precisely timed SCR gate firing. ETSCO supplies replacement DC slide PCBs & the related control boards that keep legacy analog SCR drive systems making power for drawworks, mud pumps, & rotary tables.
When a rig “loses a slide,” the trouble shows up at the brake handle & the mud pump: erratic throttle response, nuisance current-limit, a bay that will not fire, or a bridge that will not share load. The cure is usually a board — identified correctly, & replaced with the right legend & revision.
(Ross Hill, Hill Hayes, Hill Graham, & IPS) style
Firing, regulation, feedback, & protection
By board legend, part number, & revision
Board families ETSCO supports
The analog SCR houses built by (Ross Hill, Hill Hayes, & Hill Graham) share a family of plug-in printed circuit boards, each with one job & each identified by the legend printed on the board itself. ETSCO's inventory of replaceable components covers the boards these systems use most, including:
Drive & regulation boards
- DC slide firing & regulation boards
- Power limit boards
- Field supply regulator boards
- Voltage feedback boards
- DC & SCR auxiliary boards
Control & protection boards
- Generator & exciter boards
- Ground fault detection boards
- Sprocket slip boards
- Contactor auxiliary boards
- Driller’s console boards
Contact ETSCO to confirm current support for the boards you need.
Identifying & ordering replacement boards
Board-level identification is exact work, & the fastest quotes come from the best information. Send the system family (Ross Hill, Hill Hayes, Hill Graham, or IPS style), the board legend, part number, & revision exactly as printed on the board, the module or cubicle the board serves, the symptoms observed on the rig, & clear photographs of both sides of the board. If the legend is burned or unreadable, photographs of the module & its cubicle nameplate will usually get identification started.
***All company, products, logos, & service names contained herein are for identification purposes only.
Use of these names does not imply any endorsements and/or affiliations. All product names & brands are the property of their respective owners.***