Adrian Bretsch
ba6622bed7
All Markdown documentation files for the ThermIQ smart hybrid heating system. PDFs excluded via .gitignore — generated on demand. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
116 lines
4.2 KiB
Markdown
116 lines
4.2 KiB
Markdown
# ThermIQ — Schaltschrank (Electrical Cabinet) ASP1
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Adrian is responsible for the Schaltschrank design and build. This document tracks decisions, component list, wiring notes, and open items.
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## Cabinet Designation: ASP1
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First installation: Walda, Germany.
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## AC Power Distribution
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```
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Grid 230V/400V
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└── Q0: FI/LS (RCD + MCB) — main protection
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└── 230 V AC busbar
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├── LS Miner 1 → K10 (contactor) → Miner 1 (2x Schuko)
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├── LS Miner 2 → K11 (contactor) → Miner 2 (2x Schuko)
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├── LS Pumpen → P3, P4, P5 (Wilo Stratos PICO plus)
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├── LS Ventile → Relay block K3-K6 → RV1, RV2 (Belimo CQ230A)
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├── LS RK → K2 → Rückkühler fan
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└── LS PSU → 24 V DC PSU
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```
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## 24 V DC Distribution
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```
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24 V DC PSU
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├── RevolutionPi (Core + DIO + AIO)
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├── Safety relay (coil supply + input circuit)
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├── Relay coils: K2, K3, K4, K5, K6, K7
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└── Fuses per branch
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```
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## Relay / Contactor Summary
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| ID | Type | Coil | Load | Function |
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|----|------|------|------|----------|
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| K2 | Relay | 24 V DC | 230 V AC | Rückkühler fan |
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| K3 | Relay | 24 V DC | 230 V AC | RV1 AUF |
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| K4 | Relay | 24 V DC | 230 V AC | RV1 ZU |
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| K5 | Relay | 24 V DC | 230 V AC | RV2 AUF |
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| K6 | Relay | 24 V DC | 230 V AC | RV2 ZU |
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| K7 | Relay | 24 V DC | potential-free | Heat pump EVU I1 |
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| K10 | Contactor | safety output | 230 V AC | Miner 1 power |
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| K11 | Contactor | safety output | 230 V AC | Miner 2 power |
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## RevolutionPi I/O Mapping
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### Digital Outputs (DO)
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| DO | Function | Load |
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|----|----------|------|
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| DO_K2 | Rückkühler fan relay | K2 coil |
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| DO_K3 | RV1 AUF | K3 coil |
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| DO_K4 | RV1 ZU | K4 coil |
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| DO_K5 | RV2 AUF | K5 coil |
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| DO_K6 | RV2 ZU | K6 coil |
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| DO_EVU_SPERRE | Heat pump block | K7 coil |
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### Digital Inputs (DI)
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| DI | Signal | Source |
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|----|--------|--------|
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| DI_SAFETY_OK | Safety relay output | Safety relay |
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| DI_K10_FB | K10 feedback | K10 Hilfskontakt |
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| DI_K11_FB | K11 feedback | K11 Hilfskontakt |
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| DI_RK_FAULT | Rückkühler fault | Optional |
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### Analog Outputs (AO)
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| AO | Function | Range | Target |
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|----|----------|-------|--------|
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| AO1 | P3 setpoint | 0–10 V | Wilo PICO BMS module |
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| AO2 | P4 setpoint | 0–10 V | Wilo PICO BMS module |
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| AO3 | P5 setpoint | 0–10 V | Wilo PICO BMS module |
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### Analog Inputs (AI)
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| AI | Signal | Range | Notes |
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|----|--------|-------|-------|
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| AI1 | Temperature Pufferspeicher | (TBD) | 4-20 mA or 0-10 V |
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| AI2 | Temperature Warmwasser | (TBD) | |
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## Wiring Notes
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- **0–10 V pump cables**: use shielded cable, shield connected to PE at cabinet end only
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- **Safety circuit**: NC contacts in series for E-Stop, FLOW OK, TEMP MAX
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- **Contactor feedback**: Hilfskontakt (NC) in series in safety relay feedback loop
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- **EVU relay K7**: potential-free — verify no voltage is applied to Buderus I1
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- **Miner Schuko**: both plugs of each miner routed through its contactor
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- **PE**: all metal enclosures to PE
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## Commissioning Checklist
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- [ ] Verify Q0 FI/LS trips correctly
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- [ ] Verify safety relay trips on E-Stop 1
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- [ ] Verify safety relay trips on E-Stop 2
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- [ ] Verify safety relay trips on FLOW OK open
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- [ ] Verify safety relay trips on TEMP MAX open
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- [ ] Verify K10 and K11 de-energize on safety trip
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- [ ] Verify K7 does not inject voltage into Buderus I1
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- [ ] Verify RevPi AO1-AO3 reach correct voltages (0, 5, 10 V)
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- [ ] Verify P3, P4, P5 respond to 0-10 V setpoint
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- [ ] Verify RV1 opens/closes via K3/K4
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- [ ] Verify RV2 opens/closes via K5/K6
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- [ ] Test miner power-up via gRPC API
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- [ ] Verify Deye RS485 data readable from RPi
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## Open Items / Decisions Pending
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- [ ] Exact current ratings for Miner 1/2 Schuko circuits (S19J ~3200 W = ~14 A each)
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- [ ] Confirm Pufferspeicher / Warmwasserspeicher sensor types (PT1000 / 4-20mA)
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- [ ] Confirm RevPi AIO module exact model (AIO hat or separate module)
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- [ ] Decide if Hand/0/Auto switches needed on valve circuit
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- [ ] Confirm Rückkühler motor protection (motor starter vs. MCB)
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- [ ] Smart meter integration protocol
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- [ ] Battery connection to Deye (type, capacity)
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