MEAN WELL RKP-1UI is a 1U / 19-inch rack shelf for RCP-2000 rectifiers with IEC320-C20 AC inlets. The rack has three power-module positions and no RKP-CMU1 controller. Select the rectifier voltage and module population separately; the rack shelf alone has no fixed main-output voltage, current or power.
Product Datasheet
Download MEAN WELL RKP-1U Datasheet (PDF)
The RKP-1U section is on PDF pages 33, 34, 35, 36, 37. Refer to the complete mechanical drawings and notes when planning installation.
Rack Identity and Configuration
| Model / type |
RKP-1UI; rack shelf without RKP-CMU1 controller. |
| Rectifier positions |
3 × RCP-2000 positions; installed power modules and the main-output rating are determined by the ordered configuration. |
| AC connection |
IEC320-C20 AC inlets. The I and T versions identify different physical input arrangements. |
| Main-output rating |
This bare rack SKU does not select a fixed output voltage, current or wattage. Choose a matching set of rectifiers and obey their combined power, input and thermal limits. |
The three-module power-system table lists 12 V / 300 A / 3600 W, 24 V / 240 A / 5760 W and 48 V / 126 A / 6048 W for fully populated matching configurations. These values describe whole systems, not the empty rack.
The platform supports parallel RCP-2000 operation, active current sharing and hot swapping, with up to three rack shelves in the illustrated power architecture. Confirm module population, redundancy reserve and wiring for the application. If tolerances cause overload cycling at full parallel load, reduce total output current by 10% as recommended. Parallel-rack ripple may increase at light load and returns to normal above 10% load.
PFC, conversion efficiency, fan cooling, overload/short-circuit/overvoltage/overtemperature protection and auxiliary power are functions of the fitted rectifiers. Input capability, low-line and temperature derating must be checked for those rectifiers. The rack system table lists 90–264 VAC and 47–63 Hz; for RCP-2000 DC operation use 250–320 VDC, and obtain manufacturer confirmation for 320–370 VDC.
Rack Control Connections and Status
| CN500 interface |
Right-angle female 25-position D-type connector. 1 / 7 / 16: remote ON/OFF; 2 / 8 / 17: AC OK; 3 / 9 / 18: DC OK; 4 / 10 / 19: PV; 5 / 11 / 20: temperature alarm; 6 / 12 / 21: fan fail, for rectifiers A / B / C respectively. Pins 13: +5V-AUX; 14: +12V-AUX; 15: GND-AUX; 22: +S; 23: −S; 24: +V signal; 25: −V signal. |
| Remote ON/OFF |
For channels A / B / C, short CN500 pin 1 / 7 / 16 respectively to pin 13 (+5V-AUX) for ON; open for OFF. Control channels together or individually as required. |
| Auxiliary outputs |
5 V / 0.3 A (4.5–5.5 V) and 12 V / 0.8 A (10.8–13.2 V), referenced to GND-AUX pin 15. Outputs include OR-ing diodes and are not switched by remote ON/OFF. GND-AUX is isolated from the main +V and −V. |
| Remote sense / local sense |
Connect +S pin 22 and −S pin 23 to the load using a twisted pair; compensation is up to 0.5 V. For local sensing, link 22 to 24 and 23 to 25. Pins 24 and 25 are signal references, not load-current connections. |
Voltage programming uses CN500 PV pins 4 / 10 / 19 relative to pin 25 (−V signal). External control is 0–5 V for the plotted 90–110% nominal-output range; marked points include 1.5 V for 90%, 3 V for 100% and 4.5 V for 110%. Follow the full curve, including its end regions. Above 100% output voltage, reduce load current; the graph shows 90% rated current at 110% voltage.
AC OK / AC LED: input ≥87 Vrms gives 0–0.5 V and green / output ON; input ≤75 Vrms gives 4.5–5.5 V and red / output OFF. DC OK / DC LED: output above the 80% ±5% rated-voltage threshold is low / green; below the threshold is high / red. The DC-low alarm table still shows the PSU output ON; it is not an automatic shutdown declaration.
Temperature status: both internal thermal switches closed gives low / green and output ON; either switch open gives high / red and output OFF. Fan-fail is high on a fan fault and low during normal operation. Other isolated control/status signals are referenced to GND-AUX; do not substitute the main −V reference.
JK1 is a double-layer RJ45 connection: pin 1 DA and pin 2 DB are non-isolated differential parallel-control signals; pin 3 is −V signal reference; pin 4 CONTROL is the remote-PMBus control signal; pin 5 NC; pin 6 SDA; pin 7 SCL; pin 8 GND-AUX. The bus follows PMBus revision 1.1, up to 100 kHz. Do not use the signal-reference pins as load returns.
Mechanical Installation and Module Interface
| Dimensions |
350.8 × 482.6 × 44 mm (L × W × H), with mounting brackets; body width 440 mm. The shelf height is 1U. |
| Catalogue unit weight |
Confirm the mass of the supplied configuration; no single-unit mass is assigned here. |
| AC and chassis installation |
3 IEC320-C20 AC inlets, one for each rectifier position. Follow the drawing for the selected I or T version; AC connections are separate for the module positions. |
| Mounting screws |
Three M5 mounting positions on each side; maximum screw penetration 6 mm. Follow the drawing’s 125 mm longitudinal spacing and dimensional references. The rack drawing recommends 10 kgf·cm tightening torque. General drawing tolerance is ±0.5 mm. |
Use the drawing on PDF page 36 for the actual bracket width, rear connector arrangement and module positions. Maintain access to module handles and unrestricted fan airflow; the rectifier’s 41 mm height is distinct from the shelf’s 44 mm overall height.
Safety, EMC and Operating Conditions
The rack power-system specification lists UL 62368-1, CSA C22.2 No. 62368-1, TUV BS EN/EN 62368-1 and EAC TP TC 004 approvals. Dielectric withstand: input–output 3 kVAC, input–FG 2 kVAC and output–FG 0.7 kVDC. Insulation resistance for these paths: 100 MΩ at 500 VDC, 25°C and 70% RH.
For the rack power system, BS EN/EN55032 (CISPR32) conducted and radiated emissions are Class A. Harmonic current and flicker are listed under BS EN/EN61000-3-2 and -3-3. Immunity: BS EN/EN55035 and BS EN/EN61000-6-2; ESD level 3 / 8 kV air and level 2 / 4 kV contact; RF, EFT and conducted immunity level 3; surge level 4 / 4 kV line–earth and level 3 / 2 kV line–line; magnetic field level 4. Voltage-dip tests: >95% for 0.5 periods and 30% for 25 periods; interruptions >95% for 250 periods.
Working humidity: 20–90% RH, non-condensing. Storage: −40 to +85°C, 10–95% RH, non-condensing. Temperature coefficient: ±0.03%/°C over 0–50°C. Vibration: 10–500 Hz, 2 G, 10 minutes per cycle, 60 minutes along each X, Y and Z axis. Operating temperature is limited by the installed rectifier and controller as well as the rack.
Above 2000 m, reduce allowable ambient temperature by 5°C per 1000 m for fan-cooled models, or 3.5°C per 1000 m for fanless models; this rule does not establish an unrestricted maximum operating altitude. The product is a component for incorporation into final equipment. EMC tests use a 720 × 360 × 1 mm metal plate, and the final equipment must be rechecked.
Unless specified otherwise, measurements use 230 VAC, rated load and 25°C. Ripple/noise uses 20 MHz bandwidth and a 12-inch twisted pair terminated with 0.1 µF and 47 µF in parallel. Tolerance includes initial setting, line and load regulation. The catalogue lists a 5-year warranty. Applications include industrial automation, distributed power, telecommunications, redundant power, EV-charger and constant-current systems, subject to complete-system requirements.
