ABB 1MRK000167-GDR00 (Index 1MRK000005-258) PCB – Low-Voltage Control-to-Power Bridge for ABB IGCT/IGBT Units

Technical Specifications

Main Features and Advantages

Gate-driver discipline at the controller edge: The ABB 1MRK000167-GDR00​ sits at the precise point where the drive controller’s logic voltage meets the power stack’s trigger chain. Its job is not to drive the gate directly (that’s the optical/galvanic driver mounted nearer the IGCT/IGBT), but to condition, shape, and distribute the pulse train—dead-time management, enable/disable interlock, DESAT-preconditioning—so the downstream driver sees clean edges. In ABB ACS6000 and large DCS800 builds, this intermediate stage is what keeps a controller-side timing glitch from becoming a shoot-through event on the power stack. The 1MRK000167-GDR00​ is built around that responsibility, with the 1.5 kV isolation barrier ensuring that a power-side transient riding back up the trigger return doesn’t propagate into the 24 V control domain.MRK mechanical fit, not generic DIN: The “MRK” prefix tells the stores person this board belongs to a specific mechanical family—DIN/MVK rail profile, screw-tab anchors, connector keying—that is shared across ABB’s power-electronic spares (current sensors, snubber interface, gate-driver auxiliaries, excitation regulator subcards). This means the ABB 1MRK000167-GDR00​ drops onto the same rail as its sibling MRK cards in the cubicle control pod without adapter plates. For a drive-line outage where three different MRK boards might be swapped in one shift, that mechanical consistency matters—one rail, one screw-driver, one harness style.Low power, high consequence: Drawing under 10 W from 24 V DC, the 1MRK000167-GDR00​ is thermally invisible inside a drive cubicle whose power section is dissipating tens of kilowatts. But the consequence of the board failing is disproportionate—lost gate pulses → drive trips on “pulse-block” or “gate-fault,” and the line goes down. That asymmetry is why plants running ACS6000/DCS800-high-power keep at least one ABB 1MRK000167-GDR00​ on the critical-spares shelf, even though the board itself rarely fails; when it does, the fault signature (pulse-block alarm, gate-fault on a specific phase leg, intermittent enable-drop) usually points straight to the GDR chain, and a 15-minute swap beats waiting a day for courier while a rolling mill or mine hoist sits.Index-number traceability: The 1MRK000005-258​ index printed alongside the 1MRK000167-GDR00 main PN is ABB’s internal MRK cross-reference—useful when the cubicle’s parts list was printed ten years ago and only the index number made it into the CMMS. Suppliers who know the MRK family can cross both numbers; plants that quote only the index often discover the GDR00 suffix matters for revision-matching. For procurement, the discipline is: quote both numbers, photograph the removed board’s label, and confirm the host platform (ACS6000 inverter no. / DCS800-excitation cubicle type / HVDC Light aux section) so the ABB 1MRK000167-GDR00​ that arrives is the one the cubicle expects.Revision and platform nuance: Like all MRK GDR-class boards, the 1MRK000167-GDR00 has seen component spins across its production life. The GDR00 suffix anchors the base spin; ABB may have issued GDR01/GDR02 behind the same 1MRK000167 root for later serial ranges of ACS6000 or DCS800-excitation. Swapping spin without checking the cubicle’s drive-firmware expectation can produce a “board recognised but pulse-format mismatch” scenario that shows up as intermittent gate-faults under load rather than at commissioning. Best practice—keep the R/rev suffix photo from the removed board and ask the supplier to match it, especially on single-sourced drive lines where an unplanned trip costs tonnes per hour.

Application Field

The ABB 1MRK000167-GDR00​ (index 1MRK000005-258) is deployed wherever ABB MRK-class gate-driver/interface boards serve the control-to-power boundary of a high-power converter. The most visible homes are:

• ACS6000 medium-voltage drive cabinets​ (cement mill main drives, compressor trains, marine propulsion converters, mine hoist MV drives): the ABB 1MRK000167-GDR00​ typically lives in the inverter control pod, taking fiber/electrical pulse directives from the controller ACB/ACU layer and conditioning them for the IGCT gate-driver boards mounted on the power stack. When a phase-leg gate-fault or pulse-block alarm traces to the control-pod side rather than the stack-side driver, the GDR00 is the usual suspect.
• DCS800 high-power DC drive excitation cubicles: on very large DC motors (mine winders, rolling-mill main drives), the DCS800’s excitation section may use MRK GDR-class boards to bridge the excitation regulator logic to the field-stack firing chain. The 1MRK000167-GDR00​ in this context conditions the firing pulses and carries the enable/interlock from the drive controller.
• HVDC Light / STATCOM auxiliary cubicles: ABB’s MACH-based HVDC and SVC/STATCOM platforms use MRK-class interface boards in the valve-base electronics chain; GDR-class boards appear as the intermediate pulse distributor between the MACH controller and the VBE/valve-driver optical chain. The ABB 1MRK000167-GDR00​ fits this architectural slot on certain serial ranges.
• Excitation regulators (UNITROL lineage): some UNITROL D → UNITROL 6000 migrations retain MRK GDR interface boards in the LV pod of the exciter cubicle, especially where the excitation firing chain is hybrid optical + galvanic. The 1MRK000167-GDR00​ can appear here as the controller-to-firing-interface bridge.

In all cases the value proposition is the same: keep the pulse chain between controller and power stack honest, and keep a targeted board-level spare between the plant and a drive-line trip that costs hours of throughput.