Ross Hill 0522-2400-00: DC Control Module, Shunt Type
The shunt-type DC control module in the Ross Hill / NOV 0522-2400 family, including the 2400 / 2500 numbering discrepancy that hides it from searches.
Independent supplier. RHCC 0522-2400-00 is identified from the installed number. Manufacturer and trademark names are used for reference only, and condition is disclosed before sale.
| Part number | 0522-2400-00 |
|---|---|
| Manufacturer | Ross Hill / NOV |
| System | Ross Hill / Hill Hayes / NOV SCR drilling |
| Module type | DC control: shunt type |
| Known numbering issue | Also recorded as 0522-2500-00 in some records |
| Condition | New-surplus, used-tested, reconditioned |
Also searched as
0522-2400-00 · 0522240000 · 0522-2500-00 · 0522250000 · 0522-2400 · 2400-00 · Ross Hill DC control module shunt · RHCC DC module
The numbering discrepancy on this item
This part is worth a page mostly because of a documented inconsistency. Records for this item are known to disagree in the middle number group: some carry 2500 where the OEM number reads 2400. It is the same item.
The practical effect is that a search against one form returns nothing, and a buyer concludes the part is unobtainable when it is simply indexed differently. If you have hit that wall, try both forms, and when you contact us, send the number exactly as it appears on your board rather than the number you were told to look for.
What it does
The DC control modules regulate the DC drilling motors in a Ross Hill SCR house, holding speed and current against the driller's setpoint by controlling SCR firing. This variant is recorded as the shunt type, matched to a shunt-wound motor field.
Shunt and series fields behave differently under load, which is why the family splits into variants at all. A board that fits the rack is not evidence that it matches your field configuration.
The 0522-2400 family
| Number | Part description | Relationship |
|---|---|---|
| 0522-2400-00 | DC control module, shunt type. | this page |
| 0522-2400-27 | DC control module, series type, with 1K ohm resistor. | Different field configuration |
| 0522-2400-23 | DC control module, regulation. Sets SCR phase angle from the driller's handwheel setpoint. | Different variant |
| 0522-2400-21 | DC control module, standard. NOV 6415-2400-21. | Different variant |
Nameplate & revision
We verify the exact number against the physical unit before quoting and send photos of the label on the unit being offered. Given the known 2400 / 2500 discrepancy on this item, a photo of the actual label is more useful here than usual.
What to send us
These are the details that let us identify the right unit instead of guessing at it.
- The complete number exactly as printed on the board: including the middle group
- Whether the motor field is shunt or series wound, if you know
- Any revision letter or date code
- Rig, drive, and what the module is assigned to
- A photo of the board label if you can take one
- Quantity and your need-by date
Condition and sourcing
RHCC 0522-2400-00 is quoted only after current availability, condition, and lead time are confirmed. Any offered unit is identified as new-surplus, used-tested, or reconditioned before sale.
If the observed failure does not line up with RHCC 0522-2400-00, use the SCR Drive Fault Finder to narrow the subsystem before requesting a part.
Identification checkpoint
For RHCC 0522-2400-00, confirm module type: DC control: shunt type; known numbering issue: Also recorded as 0522-2500-00 in some records. Use the installed label and complete suffix before treating another item as equivalent.
FAQ
What is the Ross Hill 0522-2400-00?
Why do I see this part listed as 0522-2500-00 in some places?
What is the difference between the shunt type and the series type?
Is the -00 the base number for the family?
Can you supply one?
Availability & Quote
For RHCC 0522-2400-00, condition is disclosed before sale. Item photographs are supplied with an actual offer.
Related
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