REAL COMPONENT CANDIDATES · CONNECTORS · FUSES · SINGLE-LINE
R24 A方案真实部件候选与第一版电气单线图
边界：本页是采购前工程候选，不是冻结BOM。任何控制器、连接器、线径和保险只有在确切订单号、负载、线束长度、温升、瞬态和安全验证完成后才能定型。
一、控制器候选
| 角色 | 候选 | 订单号/系列 | 已核实适配 | 电源适配 | 状态 | 边界 |
|---|---|---|---|---|---|---|
| VCU / agricultural network coordinator | Danfoss PLUS+1 XL104-0000 | 11347796 | Current PowerSource listing with 'Where to buy'; XL104 received ISOBUS certification in 2025; high pin-count controller family. | Use selected-variant datasheet at final freeze; R24 does not assume pin-level power values not yet frozen. | PRIMARY_CANDIDATE | Final I/O/pin allocation and supply details must be frozen from the exact purchased variant. |
| RES residue-processing ECU | Danfoss PLUS+1 MC050-120 / MC050-122 | 11130956 / 11130957 | 24 inputs, 14 outputs, 2 CAN 2.0B ports, 9–36 VDC, IP67, 5 V/500 mA sensor supply. | Directly compatible with 24 V scenario. | PRIMARY_CANDIDATE | Current procurement status must be confirmed before BOM freeze; exact connector/contact bag and programming key depend on variant. |
| CHS chassis / leveling ECU | Danfoss PLUS+1 MC024-120 / MC024-122 | 11363450 class / MC024-120, MC024-122 family | 8 inputs, 8 outputs, 1 CAN 2.0B, 9–36 VDC, 5 V/200 mA sensor supply; DTM connector architecture. | Directly compatible with 24 V scenario. | PRIMARY_CANDIDATE | Suitable for R21's small CHS I/O count; final active order code/connector bag must be verified. |
| SAF independent safety controller | Danfoss PLUS+1 SC024-112 | 11159592 | Dual processors; 14 user-defined inputs; 4 x 3 A PWM outputs; 7–36 VDC; IP67; SIL 2 capable at component/system architecture level per vendor documentation. | Directly compatible with 24 V scenario. | PRIMARY_CANDIDATE | Machine-level safety functions and required AgPL remain OEM risk-analysis/validation responsibilities. |
| RES high-I/O alternative | Danfoss PLUS+1 MC088-121 | 11279844 | 34 inputs and 38 outputs; 2 CAN ports. | 9–16 VDC only. | NOT_PRIMARY_FOR_24V | Would require a robust 24→12 V supply domain; therefore not preferred for R23/R24 24 V architecture. |
关键结论：MC050-120/122的24输入/14输出与9–36V电源非常适合叶料ECU；MC024-120/122适合作为小型底盘/调平节点。MC088-121虽然I/O充足，但只有9–16V，因此不作为24V架构直接首选。
二、密封连接器候选
| 应用 | 家族 | 触点 | 最大触点电流 | 线径范围 | R24用途 |
|---|---|---|---|---|---|
| low-current sensors / CAN / small signals | TE Connectivity DEUTSCH DTM | Size 20 | 7.5 A/contact max | 16–22 AWG (2.50–0.35 mm² family range) | Preferred field connector family for pressure/position/speed/CAN nodes where cavity count fits. |
| general valve / field I/O | TE Connectivity DEUTSCH DT | Size 16 | 13 A/contact max | Follow exact selected contact PN; R24 wire gauge is separately sized by load/length. | General sealed connector candidate for proportional/digital valves and mixed I/O. |
| medium-current actuator / subfeed | TE Connectivity DEUTSCH DTP | Size 12 | 25 A/contact max | 10–14 AWG (6.00–2.00 mm²) | Candidate for medium-current actuator feeds or localized valve-block power. |
| single-conductor high-current subfeed | TE Connectivity DEUTSCH DTHD | Size 12 / 8 / 4 | 25 / 60 / 100 A | 6–14 AWG (16.0–2.0 mm² family range) | Candidate for sealed single-wire high-current feeds where stud/busbar is not preferred. |
三、导线初筛
| 回路 | 初始AWG | 用途 | 连接器 | 冻结规则 |
|---|---|---|---|---|
| SIG/CAN | 22–20 AWG | CAN, frequency, analog sensors, switches | DTM / ECU OEM connector | Final gauge by voltage drop, shielding/twist requirement, mechanical robustness and connector contact PN; not by connector max current alone. |
| ECU power / low-current output | 20–16 AWG | ECU KL30/KL15, small solenoids, relays, HMI | OEM ECU connector / DT | Final gauge by continuous current, inrush, length, bundling and ambient temperature. |
| VALVE/ACT | 18–14 AWG | proportional valves, reversing valves, hood/bin actuators | DT / DTP | Start with actual coil/actuator current; verify voltage drop and thermal derating. |
| SUBFEED | 14–8 AWG | valve-block feed, DC/DC input, medium-current distribution | DTP / DTHD / sealed stud | Fuse must protect conductor; final gauge and fuse selected together from measured/calculated load. |
| MAIN | TBD after total load study | battery to main disconnect/fuse/distribution | DTHD / busbar / ring-lug stud | Do not freeze gauge until simultaneous-load, inrush, duty cycle, temperature and cable length are known. |
四、保险家族初选
| 支路 | 候选家族 | 电压 | 家族范围 | 最终值 |
|---|---|---|---|---|
| ECU / sensor / small valve branches | Littelfuse ATOF 287 Series | 32 V | 1–40 A | TBD per branch load and conductor |
| wet/dirty local branch holder | Littelfuse sealed ATO in-line holder class | 32 V | up to 30 A holder class | TBD |
| main/sub-main low-voltage harness | Littelfuse MIDI 498 Series | 32 V | 30–200 A | TBD after load/wire study |
| battery/high-current main protection | Littelfuse MEGA 298 Series | 32 V | 40–500 A | TBD; use only if load study justifies this current class |
ATOF适合低压小支路，MIDI适合30–200A级子主线，MEGA适合更高电流主保护。R24不填具体安培值，以免在负载未知时制造错误安全裕量。
五、第一版单线图
六、采购冻结核验
| ID | 核验项目 | 责任域 | 状态 |
|---|---|---|---|
| PC01 | Exact controller order code is current and orderable | controls/BOM | OPEN |
| PC02 | Exact mating connector/contact/seal bag matches wire gauge and keying | harness | OPEN |
| PC03 | Controller supply range matches 24 V bus including cranking/transient conditions | electrical | OPEN |
| PC04 | I/O current limits match each valve/actuator, including simultaneous current | controls/electrical | OPEN |
| PC05 | Safety controller + application architecture validated for required machine safety functions | functional safety | OPEN |
| PC06 | Fuse curve coordinates with wire ampacity, inrush and downstream device protection | electrical | OPEN |
| PC07 | CAN termination and backbone/stub lengths frozen in harness drawing | network/harness | OPEN |
| PC08 | Environmental sealing/IP requirement maintained with mating connectors and backshells | mechanical/harness | OPEN |