Product Overview

The Siemens 6DD1601-0AE0​ is a SIMADYN D PG16 processor module — the converter-dedicated processor in Siemens’ SIMADYN D high-performance drive-control family, positioned distinctly from the PM5/PM6 general-purpose CPUs (6DD1600-xx) and from the later SIMATIC TDC line (6DD1600-0BAx). The “PG16” designation ties to Prozessor für Gefäßsteuerung (processor for thyristor/converter control) — the Siemens 6DD1601-0AE0​ is engineered specifically to close firing-angle and field-current regulation loops for line-commutated thyristor converters: cycloconverter main drives on old tandem mills, 12-pulse/6-pulse rectifier bridges for generator exciters, HVDC light-type converter stations, and SITOR thyristor stack interfaces. Where a PM6 (6DD1600-0AK0) runs the mechanical-side vector/tension/AGC CFC loop, the Siemens 6DD1601-0AE0​ PG16 sits in the same or adjacent SIMADYN D subrack and owns the converter firing math — alpha-angle calculation, commutation-angle compensation, PSS/AVR outer loop, and the SITOR semiconductor interface that gates the thyristor firing pulses.Architecturally the Siemens 6DD1601-0AE0​ carries a 16-bit processor at 16 MHz — deliberately modest compared to the PM6’s 64-bit RISC, because the converter firing loop is a bounded calculation (alpha = f(Vdc_ref, Vac, Id, comm_drop)) that fits comfortably in 16-bit fixed-point, and the 16 MHz clock paired with <0.5 ms typical cycle is more than adequate for 6-pulse/12-pulse firing at 50/60 Hz line-commutated cadence. Memory is 512 KB program + 256 KB data — enough for the D7-SYS CFC chart that implements the converter regulation (often a standardized Siemens “converter object” CFC shipped with SIMADYN D, customized per stack). I/O is minimal and purpose-built: 4 BE (binary inputs, 24 V DC) + 4 BA (binary outputs) on the front, plus one SITOR interface (the dedicated firing-pulse/status link to Siemens thyristor stacks — SITOR being Siemens’ semiconductor/thyristor product line). Backplane buses are L-Bus (intra-rack) and SLL/SBP (Siemens Link Line / Serial Backplane) for inter-rack communication with PM6 siblings or with an S7-400 cell PLC — the Siemens 6DD1601-0AE0​ can exchange converter telemetry (Idc, Vdc, alpha_actual, fuse-fault, stack-temp) over SLL to a PM6 or directly to a DP/ethernet uplink via a CS8 in the same rack.The Siemens 6DD1601-0AE0​ is manufacturer-EOL, PM500 status since 1 Oct 2017, deleted without replacement — Siemens’ official note says “contact local Siemens office” because the PG16 function rolls into SIMATIC TDC + SINAMICS DCM / S120 active-front-end in new designs, but thousands of SIMADYN D converter racks (gen exciters, cycloconv main drives, HVDC valves) are still live, and the Siemens 6DD1601-0AE0​ remains the only correct like-for-like spare. It is not interchangeable with PM5/PM6 (different slot function, different CFC libraries) and not TDC-compatible (TDC is 6DD1600-0BAx / 6DD1601-0xx-TDC, different backplane).

Technical Specifications