Electrical Specifications
S/N | Parameter | Value | Notes |
1 | Input Voltage Range | 24 – 32 VDC | Nominal 28 V |
2 | Rated Power | 225W | derating curve starts at +70 °C |
3 | Output Voltage Accuracy | ≤±1% | Under nominal load, nominal input, and room temp |
4 | Load regulation | ≤ ±0.1% | when load current varies from no-load to full-load |
5 | Line regulation | ≤ ±0.1% | over input range 24–32 V |
6 | Output ripple (peak-to- peak) |
≤100 mV p-p | 0.1 Hz–100 MHz; Measured at steady load; Bandwidth: 20 MHz |
7 | Overshoot | <5% during transient | no sustained ringing |
8 | Start-up time | < 300 ms | VIN applied to output within regulation ±1% |
9 | Hold-up time | ≥ 10 ms | from loss of VIN to output voltage |
10 | Output 1 | +28V/2.5A | independent power system |
11 | Output 2 | +28V/5A | independent power system |
12 | Efficiency | ≥ 90% | For 70% to 100% load |
13 | over-temperature protection | 90ºC(min); 125ºC(max) | Power supply should work at full for 1 hour at 70ºC |
14 | Output overcurrent protection | ① 4.6 ②7.1 ② 6.3 ②9.5 | used as a test indicator |
15 | Output overvoltage protection | 33V(min); 36V(max) | |
16 | Load 2 output delay | >50mS |
Mechanical
Parameter | Value |
Dimensions | 180x140x30 mm |
Weight | ≤ 700 g |
Mounting | Three holes (4mm taped; 10mm deep) on edge of cavity |
Connectors
Pin definition of (15pin micro-D female) Input connector
S/N | Purpose | Function |
1-8 | +28V ± 4VDC | Power In |
9-15 | +28V GND |
Pin definition of (9pin micro-D female) Output 1 connector
S/N | Purpose | Function |
1-5 | +28V/2.5A | Power Out |
6-9 | +28V GND |
Pin definition of (15pin micro-D male) Output 2 connector
S/N | Purpose | Function |
1-6 | +28V/5A | Power Out |
7-10 | Power GND | |
11 | RS422 Rx+ | Industrial PC to Module |
12 | RS422 Rx- | Industrial PC to Module |
13 | RS422 Tx+ | Module to Industrial PC |
14 | RS422 Tx- | Module to Industrial PC |
15 | Signal GND |
Communication Protocol
– RS422 Port (15pin micro-D male [pin 11 – 15])
– Baud Rate: 9600 bps
– Function: Reports voltage and current of both outputs and Switch On/Off Output 1 only
Command 1
AB | A0 | OUTPUT 1 | XOR Checksum | FA | AA |
Byte | Name | Data | Function |
Byte_1 | Frame Header | 0xAB | |
Byte_2 | 0xA0 | ||
Byte_3 |
OUTPUT 1 | 0x00 | OFF |
0xAA | ON | ||
Others | DO NOTHING | ||
Byte_4 | XOR Checksum | — | XOR all bytes of header and data |
Byte_5 | Frame Footer | 0xFA | |
Byte_6 | 0XAA |
Response 1
Same as Command 1.
Command 2
BB | B0 | Health Enquiry | XOR Checksum | FA | AA |
Byte | Name | Data | Function |
Byte_1 | Frame Header | 0xBB | |
Byte_2 | 0xB0 | ||
Byte_3 | Health Enquiry | 0x11 | |
Byte_4 | XOR Checksum | — | XOR all bytes of header and data |
Byte_5 | Frame Footer | 0xFA | |
Byte_6 | 0XAA |
Response 2
BB | B0 | Input Voltage | Output Current 1 | Output Current 2 | XOR Checksum | FA | AA |
Byte | Name | Data | Function |
Byte_1 | Frame Header | 0xBB | |
Byte_2 | 0xB0 | ||
Byte_3 | Input Voltage | 0x1C | Refer to table below |
Byte_4 | Current 1 | 0xXX | |
Byte_5 | Current 2 | 0xXX | |
Byte_6 | XOR Checksum | — | XOR all bytes of header and data |
Byte_7 | Frame Footer | 0xFA | |
Byte_8 | 0XAA |
Parameter |
Value | Hex 1Byte Value | Comments |
Input voltage | 32V | 0x20 | Voltage range depends upon XADC so minimum and maximum could be adjusted as OEM desires |
. | . | ||
28V | 0x1C | ||
. | . | ||
24V | 0x18 | ||
Output Currents | 0A | 0x00 | Current range and resolution depends upon the current sense amplifier and XADC. So OEM can adjust both as per actual implementation. However we desire a good resolution. |
0.024 | 0x01 | ||
. | . | ||
. | . | ||
6A | 0xFA |
Response 3
CB | C0 | Error Code | XOR Checksum | FA | AA |
Byte | Name | Data | Function |
Byte_1 | Frame Header | 0xCB | |
Byte_2 | 0xC0 | ||
Byte_3 |
Error Code |
— | 0x01 (Checksum Error) 0x02 (Invalid Command) 0x03(Parameter |
Out of Range) | |||
Byte_4 | XOR Checksum | — | XOR all bytes of header and data |
Byte_5 | Frame Footer | 0xFA | |
Byte_6 | 0XAA |
Qualification Specifications
Temperature tests will be performed at OEM facility. Other qualification tests will be performed at user facility.
S/N | Test | Acceptance |
1 | EMC/EMI | CE102, CS101, CS114, CS115, CS116, CS118, RE102, RS103 |
2 | Low Temperature | -40 ºC for 4hrs |
3 | High Temperature | +70 ºC for 4hrs |
4 | Random Vibration | 6.06grms/10mins/Axis |
5 | Endurance vibration | 3.60grms, 01hr/X,Y and Z axis |
6 | Mechanical shock | 30g/11ms/saw tooth/Half Sine |
7 | Linear acceleration | 6g/3min |
8 | Thermal stress cycle | -20 ºC to +60 ºC @ 2 to 3 ºC/min 60min soak time, 2xCycle |
9 | Thermal shock | -40 ºC to +70 ºC in 1min |
10 | Low pressure | 0.18bar for 15mins(40k ft) |
11 | Humidity test | 60% to 90%, +20 ºC to +70 ºC for 75 hrs |
12 | Power on Aging | 4hrs ON + 0.5hrs OFF (16 Cycles) |
13 | Isolation resistance | >10MΩ @ 200VDC for 60sec |
