Technical specifications
Power supply (VS)
9-28 V
⎓
(VDC)
Reverse polarity protection with 2.2 A resettable
fuse. Surge protection up to ±1000V/2ohms
1.2/50
μ
s
Current consumption at VS+ 12 V
⎓
including Raspberry Pi 4, with Ethernet connected,
no USB devices
low CPU load: 320 mA,
100% CPU load, before throttling: 590 mA
100% CPU load, throttled: 500 mA
All relays ON add: 90 mA
SPBF10X fan option, add: 50 mA
Actual current consumption may vary based on
working conditions
Current consumption at VS+ 24 V
⎓
including Raspberry Pi 4, with Ethernet connected,
no USB devices
low CPU load: 190 mA,
100% CPU load, before throttling: 320 mA
100% CPU load, throttled: 280 mA
All relays ON add 50 mA
SPBF10X fan option, add: 25 mA
Actual current consumption may vary based on
working conditions
Raspberry platform compatibility
Pi 4 Model B
Pi 3 Model B+
Pi 3 Model B
Pi 2 Model B
(tested with Pi 4 Model B for regulatory compliance)
Voltage range at digital inputs
DI1..DI3: 0÷40 V
⎓
in normal mode;
0÷5 V
⎓
in TTL mode
DI4..DI6: 0÷VS+
⎓
Current for each digital input in normal mode
DI1..DI3:
• 1.7 mA at VS+=12 V
⎓
• 3.4 mA at VS+=24 V
⎓
DI4..DI6:
• 1.9 mA at VS+=12 V
⎓
• 3.9 mA at VS+=24 V
⎓
Voltage threshold digital inputs in normal mode
• VIH: 4.2 V
• VIL: 3.4 V
Voltage threshold digital inputs in TTL mode
• VIH: 2.4 V
• VIL: 0.8 V
Range for analog inputs
• AI1..AI2: 0÷30 V
⎓
• AI3..AI4: 0÷3 V
⎓
Impedance for analog inputs
AI1..AI4: 200 kOhm
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Iono Pi User Guide
