MEAN WELL RPB-1600-48CAN is an RPB-1600 intelligent AC/DC battery charger for the 48 V nominal battery class. It provides a default 27.5 A charging current with 57.6 V boost and 55.2 V float settings, CANBus communication, programmable charging curves and a 41 mm 1U body. The CANBus version is a by-request configuration.
Product Datasheet
Download MEAN WELL RPB-1600 Datasheet (PDF)
The RPB-1600 section is on PDF pages 1, 2, 3, 4, 5, 6, 7, 8. Refer to the complete mechanical drawings and notes when planning installation.
Model-Specific Charging Output
| Nominal battery-voltage class |
48 V |
| Default boost charge voltage |
57.6 V |
| Default float charge voltage |
55.2 V |
| Default charging current |
27.5 A |
| SVR voltage adjustment |
47.5–58.8 V |
| Suggested battery capacity |
90–270 Ah |
| Efficiency, typical |
93.5% |
| Reverse leakage from battery, typical |
<45 mA |
The 48 V model designation is the nominal battery-voltage class; the default charging voltages are the boost and float values above. The suggested Ah range is a selection guide: confirm the battery manufacturer's permitted current and charging profile. Apply both the input-voltage and temperature derating limits.
For lead-acid batteries or batteries without a BMS, use a breaker to disconnect charger and battery after full charge.
Input and Configuration
| AC input |
90–264 VAC |
| DC input |
250–370 VDC |
| Input frequency |
47–63 Hz |
| Power factor, typical |
0.97 at 230 VAC and full load |
| AC current, typical |
15 A at 115 VAC; 8.5 A at 230 VAC |
| Cold-start inrush, typical |
35 A at 230 VAC |
| Input leakage current |
<2 mA at 240 VAC |
| Communication fitted |
CANBus |
The CAN suffix selects the CANBus configuration listed as by request. This unit uses CANBus rather than the blank-suffix PMBus option.
Active PFC and active inrush limiting are built in. The input withstands 300 VAC for 5 seconds; this is a temporary surge rating, not a continuous operating voltage. The block diagram identifies 90 kHz PFC and 70 kHz PWM switching.
Unqualified electrical specifications are measured at 230 VAC, rated load and 25°C ambient.
Charging Curves and Battery Compatibility
| Default, programmable boost / float |
57.6 V / 55.2 V |
| Gel boost / float |
56 V / 54.4 V |
| Flooded boost / float |
56.8 V / 53.6 V |
| AGM boost / float |
58 V / 54 V |
Default three-stage charging applies 27.5 A constant current, then holds the boost voltage during the constant-voltage stage. The curve changes to float when charging current falls to 10% of CC. The LED is orange during constant-current/constant-voltage charging and green in float.
The embedded profiles cover gel, flooded and AGM lead-acid batteries. A correctly programmed curve can also serve the listed lithium battery types, including lithium iron and lithium manganese; confirm all settings with the battery supplier.
For the default charging curve, short CN1 pins 10 (D0) and 14 (-V signal). Curve enable/disable, two-stage operation, stage timeout settings and alternative charging/control modes must follow the applicable user manual. Programming charging-curve parameters requires the separately selected MEAN WELL SBP-001 smart battery charging programmer and a personal computer.
Voltage and Current Programming
| Voltage programming range |
75–125% of nominal output voltage |
| Current programming range |
20–100% of rated current |
| PV control / return |
CN1 pin 12 / pin 14 (-V signal) |
| PC control / return |
CN1 pin 11 / pin 14 (-V signal) |
PV and PC operate when PMBus/CANBus control is not operating. The built-in SVR operates only when neither communication control nor PV/PC control is operating.
Use the plotted control characteristics rather than a linear percentage conversion. Below 0.4 V control, the PV graph shows nominal voltage and the PC graph shows rated current. At the low-control transition the curves step to 75% voltage or 20% current, remain at those levels through 1 V, then rise nonlinearly to 125% voltage or 100% current at about 4.7 V, with the shown plateau extending to 5 V.
PV, PC and the address/selection functions use the non-isolated -V signal reference. Signal terminals are control references, not load-current connections.
Remote Control, Auxiliary Outputs and Temperature Compensation
| Remote ON-OFF |
Short CN1 pins 4 and 3 (+5V-AUX): ON; open: OFF |
| Remote input levels |
ON: 4.5–5.5 V; OFF: -0.5–0.5 V; 5.5 V maximum |
| 5 V auxiliary output |
4.5–5.5 V, 0.3 A |
| 12 V auxiliary output |
10.6–13.2 V, 0.8 A |
| Temperature compensation |
-3 mV/°C/cell; 24 cells for this voltage class |
Both auxiliary outputs have an internal ORing diode, are referenced to GND-AUX and remain available independently of the Remote ON-OFF function. GND-AUX is isolated from the main output terminals.
Connect the enclosed 5 kohm NTC thermistor to CN1 pins 15 (RTH+) and 16 (RTH-), placed at the battery or in its vicinity. The charger also operates without this thermistor. With parallel chargers, join all RTH+ terminals together and all RTH- terminals together even when compensation is not required.
Status and Protection
| DC OK |
CN1 pin 5: high (3.5–5.5 V) at output ≤32 V ±1 V; low (-0.5–0.5 V) at output ≥32 V ±1 V |
| T-ALARM |
CN1 pin 6: high (3.5–5.5 V) for over-temperature alarm or fan failure; low (-0.5–0.5 V) normally |
| Alarm reference |
CN1 pin 2, GND-AUX; isolated from the main DC output |
| Over-voltage threshold |
63–75 V |
| Over-voltage recovery |
Output shutdown; re-power on to recover |
| Over-temperature recovery |
Output shutdown; automatic recovery after cooling |
Alarm terminals are output-only TTL signals with a maximum signal current of 10 mA; do not apply an external voltage to these outputs. DC OK is an active-low indication and uses the voltage threshold shown above.
Battery under-voltage, battery not connected and short-circuit protection are also provided. Coordinate external protection with the installation and battery requirements.
Green indicates float; orange indicates charging. Red indicates an abnormal state such as over-temperature protection, overload, fan failure or charging timeout. A flashing red LED warns when internal temperature reaches 60°C: operation may still be normal at that point; this warning is distinct from a protection shutdown. On the PMBus configuration, the warning can also be reported through PMBus.
Parallel Operation
Up to three chargers can share current. Connect DA, DB and -V signal between units using short, heavy output wiring; twist long control wiring to reduce noise. Set output-voltage differences to less than 0.2 V. Allowable combined current is the rated current of one charger × number of chargers × 0.9. Sharing may not be fully balanced below 5% of the aggregate rated output current.
For one charger, leave CN500 unconnected and set SW1 ON. For two chargers, connect CN500 and set both SW1 switches ON. For three chargers, connect all CN500 interfaces and use SW1 ON / OFF / ON along the connection chain. SW1 terminates the DA/DB lines; it is not a communication-protocol selector.
The series lists active sharing up to 4800 W (2+1). Actual usable output remains subject to the selected model's voltage/current limits, the 0.9 sharing factor, input derating and temperature derating.
Connections and Mating Parts
| CN1 1 / 2 / 3 |
+12V-AUX / GND-AUX / +5V-AUX |
| CN1 4 / 5 / 6 |
Remote ON-OFF / DC OK / T-ALARM |
| CN1 7 / 8 / 9 |
A0 / A1 / A2 |
| CN1 10 / 11 / 12 |
D0 charge-curve/control selection / PC / PV |
| CN1 13 / 14 |
+V (signal) / -V (signal) |
| CN1 15 / 16 |
RTH+ / RTH- |
| CN500 1–2 / 3–4 / 5–6 |
DA / DB / -V (signal) |
| CN500 7 / 8 |
CANH / CANL |
| AC terminal 1 / 2 / 3 |
FG / AC neutral (N) / AC line (L) |
| Main DC output |
Connect the marked +V and -V output bars with correctly sized output conductors |
CN1 is HRS DF11-16DP-2DS or equivalent, mating with DF11-16DS or equivalent. CN500 is HRS DF11-8DP-2DS or equivalent, mating with DF11-8DS or equivalent. The listed contact family is HRS DF11-**SC or equivalent; select the complete contact reference for the chosen wire and housing. These mating-component references do not specify an included cable assembly.
Address, curve-selection, PV/PC and sharing signals referenced to -V signal are non-isolated from the main output. Communication and auxiliary/alarm functions marked with the isolated reference use GND-AUX. Do not use either signal-voltage terminal as a power-output terminal.
Cooling and Derating
| Operating ambient |
-30 to +70°C, subject to derating |
| 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 min/cycle, 60 min on each of X, Y and Z |
| Cooling |
Built-in thermostatically controlled DC fan |
With horizontal installation, the thermal curve allows 100% load from -30°C through 50°C and falls to 50% at 70°C. Operation from -30°C to -25°C requires 230 VAC input.
The 60 Hz input-voltage curve shows 60% load at 90 VAC, rising to 100% at 180 VAC and remaining at 100% through 264 VAC. Apply this limit together with the thermal curve.
For these fan-cooled units above 2000 m, reduce the permitted ambient temperature by 5°C per additional 1000 m. Keep the fan and airflow path unobstructed.
Dimensions, Installation and Options
| Body dimensions, L × W × H |
300 × 85 × 41 mm (1U) |
| Mechanical drawing |
Case 250; general tolerance ±0.5 mm |
| Unit mass |
2100 g; catalogue PACKING reference per unit |
| Transport packing |
6 pcs / 13.6 kg / 1.25 CUFT |
| Conformal coating |
Optional configuration |
| Charging programmer |
SBP-001, selected separately; personal computer required |
The AC-terminal projection is 12 mm maximum; the negative and positive DC output bars project 28 mm and 38 mm, respectively. The DC-bar connection holes are 6.5 mm in diameter. The drawing gives 252 mm longitudinal and 105 mm transverse mounting pitches, with 115 mm overall flange width. Airflow is towards the fan end, away from the power-terminal end. For side M4 mounting, penetration is 5 mm maximum and tightening torque is 7–10 kgf·cm; for bottom M3 mounting, penetration is 4 mm maximum and torque is 6–8 kgf·cm. The AC terminal has an 8 kgf·cm maximum tightening torque.
The RPB-1600 series specifies a power-density ceiling of up to 25 W/in³; this is a series description rather than a separate per-model output rating. Select optional configurations and mating parts for the complete system; a listed connector or programmer reference does not by itself mean that item is supplied with the charger.
Safety, EMC and Reliability
| Catalogue safety approvals |
UL62368-1; TUV BS EN/EN62368-1; EAC TP TC 004 |
| Dielectric withstand |
Input/output: 3 kVAC; input/FG: 2 kVAC; output/FG: 1.5 kVAC |
| Insulation resistance |
100 Mohm at 500 VDC, 25°C, 70% RH: input/output, input/FG and output/FG |
| MTBF, minimum |
457.7 thousand hours, Telcordia SR-332; 100.3 thousand hours, MIL-HDBK-217F at 25°C |
| Warranty |
5 years |
EMC emissions: BS EN/EN55032 (CISPR32), conducted Class B and radiated Class A; BS EN/EN61000-3-2 and -3; EAC TP TC 020. Immunity: BS EN/EN61000-4-2/-3/-4/-5/-6/-8/-11, BS EN/EN55035 and EAC TP TC 020.
The charger is a component for installation in final equipment. Catalogue EMC tests use a 720 × 360 × 1 mm metal plate; the complete equipment must reconfirm compliance.
Typical applications include large DC UPS and emergency backup systems, marine charging modules, vehicle charging stations, wastewater treatment and electrolysis systems, subject to the installation's electrical and environmental requirements.
