MEAN WELL RKP-1UT-CMU1 is a 1U / 19-inch rack shelf for RCP-2000 rectifiers with AC terminal blocks and an RKP-CMU1 monitor/controller. The controller-equipped drawing has two power-module positions. This bare rack code does not define an installed rectifier voltage or a fully populated power-system rating.
Product Datasheet
Download MEAN WELL RKP-1U Datasheet (PDF)
The RKP-1U section is on PDF pages 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44. Refer to the complete mechanical drawings and notes when planning installation.
Rack Identity and Configuration
| Model / type |
RKP-1UT-CMU1; rack shelf with RKP-CMU1 controller. |
| Rectifier positions |
2 × RCP-2000 positions; installed power modules and the main-output rating are determined by the ordered configuration. |
| AC connection |
AC terminal blocks. 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 CMU controller takes the space shown beside rectifier positions A and B. Do not apply the three-rectifier power-system table as an unconditional rating for this two-position 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: remote ON/OFF; 2 / 8: AC OK; 3 / 9: DC OK; 4 / 10: PV; 5 / 11: temperature alarm; 6 / 12: fan fail, for rectifiers A / B respectively. Pins 16–21 are NC. 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, short CN500 pin 1 / 7 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 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 × 483.6 × 44 mm (L × W × H), with mounting brackets; body width 440 mm. The shelf height is 1U. |
| Catalogue unit weight |
4.4 kg (4400 g), catalogue packing reference per unit; not a measured net or shipping weight. |
| AC and chassis installation |
2 AC terminal blocks, with FG, AC/N and AC/L identified on the rear drawing. Connect protective earth to FG. 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. General drawing tolerance is ±0.5 mm. |
Use the drawing on PDF page 42 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.
CMU Monitoring, Control and Logging
| Controller supply / display |
12–15 VDC input; 1 A at 12 V or 0.8 A at 15 V. LCD: 16 × 2 alphanumeric characters, with local control buttons; green power and red alarm indicators. |
| Interfaces / monitored values |
PMBus to the power supplies; USB, RS232 and Ethernet for PC connection. Display or monitor output DC voltage, load current, internal temperature, input voltage, operating status, serial number and firmware version. |
| Compatible power supplies |
The standalone RKP-CMU1 supports RCP-1600, RCP-2000 and DRP-3200 families; the RKP-1U rack configuration shown here uses RCP-2000. Check controller and supply firmware compatibility before integration. |
| PC and local operation |
Use the LCD/buttons without a PC, or the catalogue PC monitoring software / web interface through the applicable connection. Remote operation through a GSM modem requires the external communications arrangement. |
PMBus revision 1.1 operates at up to 100 kHz. Output voltage and the overcurrent setting can be controlled through the supported commands. ON/OFF can be commanded for one unit or a group, using CN500 remote controls, JK1 CONTROL or the PMBus OPERATION command as appropriate to the wiring and power supply.
The real-time clock supports time-stamped monitoring and events. The data log stores 1000 records with a configurable interval of 1–60 minutes. The event log stores 600 records for alarm occurrence and clearance. Use the controller manual and the actual supply model to establish the supported device count; the RCP-2000 documentation specifies control of up to nine supplies. The menu’s PSU 0–31 address range is not a promise that one RKP shelf holds 32 units.
Four programmable changeover relays can respond to any alarm, overvoltage, overload, short circuit, overtemperature, high temperature, AC failure, fan lock or PMBus error. They can follow a PSU ON/OFF condition immediately (0 seconds) or with a delay of 1–600 seconds, or respond to digital inputs D-IN1 through D-IN4. Each relay is limited to 30 VDC / 1 A with a resistive load.
CMU Connector and Wiring Details
CN503 digital input uses HRS DF11-8DP-2DS or equivalent: pins 1 / 3 / 5 / 7 are D-IN1 / D-IN2 / D-IN3 / D-IN4; pins 2 / 4 / 6 / 8 are GND-FG. Open circuit or an applied +5 V is logic 1; short circuit or 0 V is logic 0. GND-FG is isolated from the main −V and from GND-AUX.
CN502 is the 9-position male D-type RS232 connector. RXD is pin 2 and TXD is pin 3; pins 1, 6, 7, 8 and 9 are NC. Confirm the ground/reference assignment and the complete serial-cable wiring for the supplied controller before connecting it.
JK500 Ethernet is RJ45: pin 1 TX+, pin 2 TX−, pin 3 RX+, pin 6 RX−; pins 4, 5, 7 and 8 are NC. The separate JK1 PMBus connector uses pin 1 DA, 2 DB, 3 −V signal, 4 CONTROL, 5 NC, 6 SDA, 7 SCL and 8 GND-AUX.
TB4 relay block: DECA MX422-25412 or equivalent. Normally-open contacts are pins 1 / 4 / 7 / 10; normally-closed contacts are 2 / 5 / 8 / 11; common contacts are 3 / 6 / 9 / 12. Use the 30 VDC / 1 A resistive-load maximum for every relay.
SK100 DC input connector: Schurter 4840.2201 or equivalent; pin 1 is +VIN and pin 2 is −VIN. The recommended supply families are GS12, GS15, GS18, GE12, GE18 and GST18. Select a complete adapter with 12–15 VDC output, adequate current, correct polarity and a physically compatible connector; this family list does not specify an included adapter or a particular full ordering code.
The connector references identify the components shown in the controller drawing. Mating parts, cables and external modem or adapter arrangements must be selected for the application; they are not an automatically included accessory kit.
CMU Environment and Compliance
The controller operates from −25 to +70°C; the LCD may freeze below −10°C. Working humidity is 20–90% RH, non-condensing; storage is −40 to +85°C and 10–95% RH, non-condensing. Vibration: 10–500 Hz, 2 G, 10 minutes per cycle, 60 minutes on each axis. Apply the lower allowable range of the controller and any installed power supply.
For the CMU-equipped rack, the controller table lists UL 62368-1, CSA C22.2 No. 62368-1, TUV BS EN/EN62368-1 and EAC approvals. Withstand: input–output 3 kVAC, input–FG 2 kVAC, output–FG 0.7 kVDC; insulation resistance is 100 MΩ at 500 VDC, 25°C and 70% RH for these paths.
The CMU specification lists BS EN/EN55032 conducted Class B and radiated Class A, BS EN/EN61000-3-2 / -3-3 and EAC TP TC 020. Listed immunity includes BS EN/EN61000-4-2, -3, -4, -5, -6, -8 and -11, BS EN/EN61000-6-1 and BS EN/EN55035 for light industry. A populated power rack must also comply with its complete power-system EMC conditions.
MTBF reference: 671.5 khr minimum under Telcordia SR-332 (Bellcore), and 110.5 khr minimum under MIL-HDBK-217F at 25°C. The controller catalogue lists a 5-year warranty. For its isolation assessment, SK100 and connectors other than CN502, CN503 and USB are considered output circuits. Above 2000 m, apply the catalogue ambient derating of 3.5°C per 1000 m for fanless models and 5°C for fan-cooled models. EMC component testing uses a 720 × 360 × 1 mm plate; confirm the completed equipment’s compliance.
