3 Years Warranty
3 Years Warranty
A2551
New
8 Channel 8 V/12 A Full Floating Channel Board
Features
- 8 independently controllable Low Voltage channels
- 0÷8 V output voltage and 12 A maximum current (60 W)
- Individual Floating Channels
- DB37 or 8 pin D-Sub connectors
- Individual remote sense lines (A2551A only)
- Low ripple
- Under/over-voltage alert, overcurrent and max. voltage protection
- Interlock logic for unit enable
- Software Tool for easy channel management
Overview
The power supply A2551 is a single width board (5 TE wide) that houses 8 independent Low Voltage Individual Full Floating channels, compatible with the CAEN Universal Multichannel Power Supply System (SY4527, SY5527). The A2551 is available in different versions equipped with D-Sub 8-pin or with DB37 connector:
|
DB37 connector
Single width (5 TE wide), 8 channels for Mod. A2551A |
|
D-Sub 8W8 – 8 pin high current connector
Single width (5 TE wide), 8 channels for Mod. A2551 |
Consult our connectors reference page for technical information.
A2551 Individual Floating channels allow on-detector grounding, reducing the noise level. The floating channels are insulated from each other up to ±500 V. Each output channel is provided with individual remote sensing lines to compensate for the voltage drop over the connection cables.
The output voltage range is 0 ÷ 8 V, with 0.2 mV monitor resolution (connector and sense voltages). The maximum output current is 12 A with 500 μA monitor resolution. The Maximum channel power is 60 W. The Output Voltage RAMP UP and RAMP DOWN Times may be selected independently for each channel in 1 ÷ 500 V/s range (1 V/s step).
Optionally, the A2551 can be ordered with the capability to connect the channels in parallel in pairs (CH0-CH1, CH2-CH3, CH4-CH5, CH6-CH7).
When two channels are paralleled, the system automatically detects the configuration, and the control software treats them as a single channel with an increased maximum output current of 20 A and a total power of 100 W.
Boards produced without this option can be retrofitted.
Safety features allows the module to perform as a current generator and includes:
| Overvoltage detection | if a channel voltage exceeds the programmed Overvoltage threshold value (OVVThr), it is signaled to be in “overvoltage” and is switched off. |
| Undervoltage detection | if a channel voltage decreases below the programmed undervoltage threshold (UNVThr), it is signaled to be in “undervoltage” and is switched off. |
| Overcurrent detection | if a channel tries to draw a current larger than its programmed limit, it is signalled to be in “overcurrent”; when overcurrent is detected, the relevant channel can be programmed either to turn off after a programmable trip time or to keep on providing the maximum allowed current: this feature allows the module to work as current generator. |
| A global enable/disable connector | allows to disable the channels and it is also possible, via front panel logic signals, to enable individually each channel (A2551A only). |
Technical Specifications
- Packaging
1 unit (5 TE) wide; 6U – High mechanics
- No. of Channels
8
- Polarity
Individual Floating (±500V isolation)
- Output Voltage
0 ÷ 8V
- Max Output Current
12A
- Max Output Power (connector output)
60W
- Vset Resolution
0.2 mV
- Iset Resolution
0.5 mA
- Vmon Resolution
0.2 mV
- Imon Resolution
0.5 mA
- Ramp Up/Down
1-500V/s (1 V/s step)
- Voltage Ripple (10Hz ÷ 20MHz)
- Typ: <3 mVpp
- Max: <5 mVpp
- Accuracy
- Vout/Vmon: ± 0.1% ± 20 mV
- Vset/Vout: ± 0.1% ± 20 mV
- Iout/Imon: ± 1% ± 50 mA
- Iset/Iout: ± 1% ± 100 mA
- Hardware OVV Protection
10.5 V typ
- Trip
0 to 999.9s; 1000s = Infinite; step 0.1s
- Stability
<5mV (Vset = 5V – No Load – one day after 1 hour warm up)
- Long Term Stability
<10mV (Vset = 5V – No Load – one week after 1 hour warm up)
- Temperature Coefficient
±100ppm/°C
- Load regulation
< 0.05% (Vset = 5V, Iout from 0A to 10A, 1m AWG20 cable / 1m AWG20 sense wire)
- Operating temperature
0 ÷ 45°C
- Storage temperature
-10 ÷ 70°C
- Humidity
0 – 80% non condensing
- Altitude
≤ 2000m
- Safety Standard – ROHS – Halogen free
ROHS
- MTBF
Base: 120000 hours
- ECM qualification
CE Standards
Compare
Compare with Floating Low Voltage Power Supplies.
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Ordering Options
| Code | Description |
|---|---|
| WA2551AXAAAA | A2551A - individual floating 8 ch 8 V/12 A (60 W) board - DB37 conn. RoHS |
| WA2551XAAAAA | A2551 - individual floating 8 ch 8 V/12 A (60 W) board RoHS |
| WPERSXXA2551 | A2551 parallel channel customization RoHS |
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