Univerzal Kroatien – CP Control Cabinet Knowledge Base

Cross-references: /42.6 = Blatt 42, column 6. Locations: +CP01 power field, +CP02 control field, +CP03 instrumentation field, =LP01 local panel, =Turbine, =Generator, K02 gen. CB panel, =Kondensator, +JB100 bearing temps. PDF page ≠ Blatt — see Sheet index.

Control system core

Siemens S7-300 (CPU315) — 6×DI16, 2×DO16, 4×AI8, CP342-5; SC900 speed/pressure governor (-45A2) via MPI; ST800 AFA4 overspeed (Pos.19.1); 3TK2821 E-stop relay (-43K1); operator panel via DP; Teleservice modem.

Trip chain (hardwired)

E-stop (-43K1 → -43K2/K3/K4) · overspeed ST800 (-52K2/K3) · SC900 SS/Trip (-47K3) · group trip (-72K2). Chain feeds SC900 Not-Aus input (Bl.46) and solenoid/trip valves.

Start/stop path

PB start (-40S5 / LP01 -S2) → I1.7 → PLC → Q41.4 (-40K5) → SC900 start (X65:133). Stop via I1.5 → Q41.5 (-40K6). Ready: Q41.3 (-72K7) → SC900 enable; Q41.6 (-72K8) → ready lamp.

Data files (merge keys)

sheets · cables · terminal_strips · devices · plc_rack · plc_io · circuits · sc900_io · limits · conflicts

plc_io now carries the site STEP7 symbol table merged with drawing loop references.

External interfaces

Destination	Cables	Content
=Turbine	2,3,4	Aux oil pump, oil mist separator, oil heating (power)
+LP01 local panel	20,21,22–27,28–35,36,37	Turbine control, switches, speed signals, transducers, valves
=Generator conn. box	5,10,11,12,16,17,18,41	Heating, CTs, setpoints, excitation, PT100s
=Gen.schalterfeld K02	6,7,8,9,13,14,15	VT/CT circuits, CB control & feedback
=Kondensator	46–50,52,53	Level, actuator, pump pressures, pump motors
+JB100	40	PT100 turbine bearing temps (Pos.84.1–84.8)
=extern	42,44,45,51	Live steam PT100, ext. E-stop, horn, ext. trip

Sheet index (PDF page ↔ Blatt)

PDF page	Group	Blatt	Location	Title (DE)	Title (EN)

Cables & interconnections (Anschlussplan Blatt 1–25)

Cable	From (=CP)	To	Spec	Function	Blatt/p.

Terminal strips

Strip	Location	Type	Terminals	Role	PDF pages

Devices

Tag / Pos.	Location	DE	EN	Src p.

S7 PLC rack (Blatt 65–69 · site: Rack 0 slots 4–11, Rack 1 slots 4–7)

Module	Part no.	Function	Blatt	Notes

I/O map — drawings merged with site symbol table (IO list ACW.xlsx rev 6)

Address	Symbol	Description	Loop dwg (Blatt)	Source	Notes

Addresses in STEP7 IEC notation (I/Q/PIW = E/A/PEW on the German drawings). Source both = drawing and site agree; site = from site I/O list only (sheet not yet deep-extracted). Amber rows carry a conflict/verification note — see the Conflicts tab. M-addresses are program markers.

SC900 governor (-45A2) — terminal / function map (site record)

SC900 terminal	Function

Alarm / trip limit values (site record)

Description	Limit	Unit

The site file also contains an SC900_Future tab — a planned migration of SC900 governor I/O onto PLC cards (incl. a 1794-IE12 analog card). That is a future concept, not as-built, and is excluded from the as-built tables.

Conflicts: drawings (rev b, Mai 2010) vs site record (IO list rev 6)

Item	Drawing says	Site record says	Assessment

Circuit sheet summaries (extracted so far)

Each sheet includes a signal-flow diagram — read left to right: — dashed boxes are rails / cross-sheet signals.

Blatt	PDF p.	Title	Function & cross-references

Extracted: Blatt 40–43, 45–49, 52, 54, 65–69, 72, 76, 77. Remaining: supply/measuring (1–23), generator protection & sync (30–39), valves CP-side (50, 51), ST810 (53), monitoring (57, 60–64), operator panel (71), temperature inputs (73–75), pumps & heaters (78–82), indications (89), condensate (91–96).