Technical specifications
Power supply (VS)
9-28V
⎓
(VDC)
Reverse polarity protection with 2.2A resettable
fuse. Surge protection up to ±1000V/2ohms
1.2/50
μ
s
Current consumption at VS+ 12V
⎓
including Raspberry Pi 4, with Ethernet connected,
no USB devices
low CPU load: 320mA,
100% CPU load, before throttling: 590mA
100% CPU load, throttled: 500mA
All relays ON add 90mA
Actual current consumption may vary based on
working conditions
Current consumption at VS+ 24V
⎓
including Raspberry Pi 4, with Ethernet connected,
no USB devices
low CPU load: 320mA,
100% CPU load, before throttling: 590mA
100% CPU load, throttled: 500mA
All relays ON add 50mA
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÷40V
⎓
in normal mode;
0÷5V
⎓
in TTL mode
DI4..DI6: 0÷VS+
⎓
Current for each digital input in normal mode
DI1..DI3:
• 1.7mA at VS+=12V
⎓
• 3.4mA at VS+=24V
⎓
DI4..DI6:
• 1.9mA at VS+=12V
⎓
• 3.9mA at VS+=24V
⎓
Voltage threshold digital inputs in normal mode
• VIH: 4.2V
• VIL: 3.4V
Voltage threshold digital inputs in TTL mode
• VIH: 2.4 V
• VIL: 0.8 V
Range for analog inputs
• AI1..AI2: 0÷30V
⎓
• AI3..AI4: 0÷3V
⎓
Impedance for analog inputs
AI1..AI4: 200kOhm
Analog inputs characteristics
• Resolution: 12 bits
• Linearity: ±1LSB
• MAX error: ±2% of full scale
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Iono Pi User Guide