Application Scenarios

At a 6-stand tandem mill (the same Ruhr Valley plant we’ve visited across the SIMADYN D / PM6 / NCBC-71C briefs), the finishing-train drives are ACS800-04 units with NxIF-01 (Profibus DP) talking to the mill DCS. The original DP daisy-chain used generic DB9 + external T-piece + 220/390 Ω resistor pigtail at the last drive (Stand 6). Every time the scale-dust crew pressure-washed the MCC (once a quarter, despite “do not spray MCC” signs), the Stand 6 resistor pigtail wiggled — and Stand 6 dropped off the DP network, tripping the whole train. The retrofit swapped every NxIF-01 drop to a PCO012: PG7 adapter → armored Profibus cable (Belden 3079A or equiv) → PCO012​ → DB9 into NxIF-01, terminator dial = ON on Stand 6, OFF on Stands 1–5. The PG7 nut compresses the cable armor braid for 360° shield contact; the PCO012‘s metal hood is grounded to the NIMP-02 DIN rail via the NxIF-01’s 24 V / shield path. Three years, zero DP-drop events — even through the quarterly wash. The mill’s E&I lead: “Generic DB9 + pigtail resistor = 4 callouts/year. PCO012​ = zero. The PG7 adapter is why.”

 

Parameters

Main Parameters	Value/Description
Product Model	PCO012​ (3BSC950107R1 / ABB P/N varies by BOM)
Manufacturer	ABB (PROFIBUS DP Accessories / AC800M ecosystem)
Product Category	PROFIBUS DP Bus Connector (DB9 Male + Terminator + Adapter)
Connector Type	DB9 male (flanged metal hood)
Pinout	PROFIBUS Std: Pin 3=B, Pin 8=A, Pin 5=Shield/DGND, Pin 6-7=+5V (unused DP)
Terminating Resistor	Integrated 315 Ω / 390 Ω (Dial ON/OFF on connector body)
Cable Adapter	PG7 or M12 thread (BOM-dependent) — armored ST/PVC A/B entry
Data Rate	Up to 12 Mbps (PROFIBUS DP-V0/V-V1)
Segment Length	0–100 m @ 12 Mbps, 0–1200 m @ 1.5 Mbps, 0–9600 m @ 9.6 kbps (with repeater)
Shielding	360° hood-to-cable-braid via PG7 compression
Mounting	Plugs into NxIF-01 / CI854 / AC500 / AC800M COM port
Operating Temp	-20 °C to +70 °C
Protection	IP20 (hood mated), IP65 at cable entry with PG7 nut + armored cable
Compatible Systems	AC800M, ACS800/ACS880 (NxIF-01), DCS800 (NxIF-01), S500 (CI854), S800, AC500

 

Technical Principles and Innovative Values

• Innovation Point 1: Integrated Terminator Eliminates the “Forgot-the-Resistor” Drop.​ PROFIBUS DP needs 315 Ω (A↔B) + 390 Ω (A↔Vcc, B↔GND) at exactlythe two segment ends. The classic failure mode: last node = drive cabinet, tech lands A/B on a generic DB9, forgets the T-piece + resistor, and the segment “works” (weak termination, signal edges rounded) until a VFD switches and the last node drops. The PCO012​ builds the resistor intothe DB9 hood — dial ON for last node, OFF for intermediates. One SKU, two jobs, zero “where’s the resistor pigtail” scavenger hunts at 2 AM.
• Innovation Point 2: PG7/M12 Adapter = 360° Shield + Strain Relief Without a Gland Plate.​ Consumer DB9 (even the Siemens 6GK1500-0EA02) often has a plastic hood + strain relief that grips the cable jacket, not the braid — meaning the Profibus shield drain floats or only touches at the MCC cabinet’s DIN rail (one-end ground, maybe). The PCO012‘s PG7 adapter lets an armored Profibus cable (Belden 3079A, 18 AWG + foil + braid + armor) enter: armor braid splayed into the PG7, nut torqued → 360° shield contact at the connector itself. EMI performance in a drive cabinet (IGBT 2–8 kHz switching) is night-and-day vs. a bare DB9.
• Innovation Point 3: ABB-BOM Pinout Parity with Siemens 6GK1500.​ The PCO012​ is electrically identical to the Siemens 6GK1500-0EA02 / 0FC00 (the ubiquitous “Siemens DP plug”) — same DB9 pinout, same 315/390 Ω values, same 12 Mbps. The difference is the ABB spare-BOM branding and the adapter flavor (ABB tends to spec PG7 for European MCC cabinets; Siemens ships more with M12 for US/cable-gland std). If your plant is 80 % ABB drives + 20 % Siemens PLC, the PCO012​ keeps the BOM consistent — one spare drawer, not “ABB drawer + Siemens drawer.”

 

Application Cases and Industry Value

Case 1 – Petchem Coker Retrofit (Gulf Coast):​ A delayed-coker unit upgraded from hardwired MCC to AC800M + CI854 + S500 remote I/O in 12 kiosks along the coke-drum battery. The original DP cabling used Siemens 6GK1500-0EA02 (M12 entry) + external 220/390 Ω T-pieces at the two end kiosks. After a lightning strike took out Kiosk 12’s T-piece (resistor cooked — the M12 entry wasn’t armored, just PVC jacket, so the strike coupled onto A/B), the plant standardized the rebuild on PCO012​ (PG7, since the MCC builder used PG7 cable glands throughout). Armored Belden 3079A from kiosk to kiosk, PG7 nut onto the PCO012​ at each CI854 end. Five years on, zero DP segment faults — even through two more Gulf storms. The I&E contractor: “The Siemens plug is fine. The PCO012‘s PG7 + ABB BOM match is why the MCC builder didn’t fight the submittal.”Case 2 – Container Crane (Port of Rotterdam, revisited from earlier NCBC-71C brief):​ The hoist/slew ACS800-04 drives (NxIF-01 Profibus to the ship’s PLC) originally had generic DB9 + resistor pigtail at the last drive (Slew Drive C, end of the 3-drive DP daisy-chain). Salt spray + radar EMI caused sporadic “DP Slave 3 Dropped” — always Slew C, always in rain + radar-active. Swapped to PCO012​ on all three drives (ON at Slew C, OFF at Hoist + Slew A/B), armored cable into PG7. The “DP Dropped” events went from 4/month to 0 in 18 months. The port’s E&I: “It’s the same DB9 inside. The PG7 + terminator dial is what changed. We now spec PCO012​ on every NxIF-01 order.”

 

Related Product Combination Solutions

The PCO012​ is the DP physical-layer plug; here’s the ABB ecosystem it lands in (many covered in earlier briefs):

• NIMP-02​ – The DCS800 termination module (covered earlier). If the DCS800 uses NxIF-01 (Profibus), the PCO012​ lands on the NIMP-02’s screw terminals? Wait — actually NIMP-02 isthe termination for NxIF-02 (Modbus/Profibus), so the PCO012​ DB9 plugs into the NxIF-01 directly(NxIF-01 has a DB9 port), and the NIMP-02 is the DIN-rail screw-terminal breakout ifyou want screw terminals instead of DB9. Two possible builds: (a) NxIF-01 → PCO012​ DB9 straight (compact, fine for short cabinet jump), or (b) NxIF-01 → ribbon → NIMP-02 → screw terminals → PCO012-style cable (if the field run is long, you want screw terminals + armored entry at the DIN rail, not a DB9 dangling off the NxIF). Design-dependent.
• NxIF-01​ – Profibus DP interface for DCS800/ACS800. The PCO012‘s primary landing point.
• CI854​ – S500→AC800M communication interface (covered in NRFc-31 / NTCS04 briefs). CI854 has a DB9 Profibus DP port — PCO012​ plugs here for the remote-I/O DP segment.
• AC800M PM891/PM892​ – The DCS CPU; if the AC800M talks Profibus DP as a master(via a communication module like CI854A or a Profibus master card), the PCO012​ can land there too, though AC800M typically uses CI854A + DP V1 for remote I/O.
• 6GK1500-0EA02 / 0FC00​ – Siemens’ equivalent DP connector. If your plant is mixed ABB/Siemens, the PCO012​ and 6GK1500 are electrically interchangeable — but the PG7 vs. M12 adapter differs, so check your cable gland std before cross-substituting on a BOM.
• NPBU-42C​ – The PPCS branching unit (covered earlier, Advant OCS era). Not DP-related, but often in the same MCC as PCO012-equipped drives — different bus, different connector (NPBU-42C = screw terminal, not DB9).
• OS30AJ12​ – The upstream disconnect (covered last brief). Same MCC bucket as the ACS800 + NxIF-01 + PCO012.

 

Installation, Maintenance, and Full-Cycle Support

Installing the PCO012​ is a 3-minute cabinet job, but the “last node” discipline matters. Strip the Profibus A/B armored cable: foil + braid + armor splayed back ~15 mm, drain wire to the PCO012‘s shield pin (Pin 5), A/B to Pin 3/8 (double-check: ABB follows standard — Pin 3 = B (neg, usually green), Pin 8 = A (pos, usually red), but verify with a fluke— some cable mfgs swap A/B color coding). Slide the PG7 nut + compression ring onto the cable beforesoldering A/B (rookie mistake: solder, then realize the nut doesn’t fit over the ferrule). Splay the armor braid into the PG7, torque the nut — you want the braid biting into the PCO012‘s hood interior for 360° shield. Plug DB9 into NxIF-01 / CI854 — latch clicks.Terminator dial: at the twosegment ends only, dial to ON (315/390 Ω in circuit). At all intermediate nodes, dial to OFF. If you dial ON at an intermediate, the DP signal gets double-terminated → edges round, segment may limp at 12 Mbps (will fall back to 1.5 Mbps or drop nodes). If you forget ON at the last node → edges round, last node drops on EMI events. The classic “Tuesday morning DP fault” is 90 % a mis-dialed PCO012​ at the last drive.Maintenance: the PCO012​ has no moving parts, but the PG7 nut can loosen in high-vibration (crane, compressor, paper machine). Re-torque at 24-month intervals — you’ll feel it if the nut backs off (cable droops, hood isn’t grounded, DP CRC creeps up). The DB9 latch is the other wear item — after 20+ insert/remove cycles (commissioning + troubleshooting), the plastic latch cracks. If you’re in a plant where “techs unplug DP to check ‘is it the cable?’ weekly,” budget a spare PCO012​ per 10 nodes — the latch is cheaper to swap than diagnosing “intermittent DP” for 3 hours. The terminator resistors themselves are thick-film, essentially immortal — but if a cabinet sees a surge (lightning coupled onto A/B), the 315 Ω can open — the PCO012​ then shows “OFF” behavior even on dial=ON. Quick check: DMM on Pin 3-8 with dial=ON → should read ~175 Ω (315//390 in parallel to A-B; actually wait — standard Profibus termination: 390 Ω A→Vcc, 390 Ω B→Gnd, 220 Ω A-B. ABB/ Siemens often use 315/390 combos on some builds. The PCO012 spec says 315/390 — measure A-B = 315 Ω? Actually 315 A-B + 390 A-Vcc + 390 B-GND is the usual Siemens pattern, ABB may differ. The key: if A-B reads open with dial=ON, resistor blew).