Technical specifications
Power supply
⎓
dc 24 V nominal (range 9-28 V), max 1.1 A
Reverse polarity protection with 1.1 A resettable
fuse
Current consumption at VS+ 12 V
⎓
including Raspberry Pi CM 3+, with Ethernet and
RS-485 connected, no USB devices
low CPU load: 170 mA
100% CPU load: 410 mA
Actual current consumption may vary based on
working conditions
Current consumption at VS+ 24 V
⎓
including Raspberry Pi CM 3+, with Ethernet and
RS-485 connected, no USB devices
low CPU load: 100 mA
100% CPU load: 220 mA
Actual current consumption may vary based on
working conditions
Raspberry platform compatibility
Raspberry Pi Compute Module 1
Raspberry Pi Compute Module 3
Raspberry Pi Compute Module 3+ 8GB
Raspberry Pi Compute Module 3+ 16GB
Raspberry Pi Compute Module 3+ 32GB
Raspberry Pi Compute Module 4S 8GB
Raspberry Pi Compute Module 4S 16GB
Raspberry Pi Compute Module 4S 32GB
Serial communication port
RS-485 Half-Duplex with automatic data direction
management
Serial port baud rates
1200 to 115200
ESD-Protection Voltage on RS-485 A/B
±15 kV human body model
±8 kV contact discharge
Surge protection on RS-485 A/B
Surge protection up to ±500 V / 2 Ohms 1.2/50
μ
s;
600 W peak pulse power capability at 10/1000
μ
s
waveform
Fail safe feature on RS-485
Yes
Real time clock
Internal RTCC circuit with backup lithium battery.
Only use CR1220 or BR1220 batteries.
Expected battery life without main power supply:
~2
years
Housing
standard 2M for DIN rail
Electromagnetic immunity compliance
EN 61000-4-2 (ESD)
EN 61000-4-3 (Radiated RF Field)
EN 61000-4-4 (Burst/fast transient)
EN 61000-4-5 (Surge)
EN 61000-4-6 (Conducted)
EN 61000-4-8 (Power frequency magnetic field)
Operating temperature
CM1, CM3: -20…+50 °C
CM3+, CM4S: -20…+60 °C
Storage temperature
-30…+80 °C
Altitude
Up to 2000 m
25
Strato Pi CM User Guide
