Controller
Tor Saturn 321
Industrial controller with 4 DI, 8 DO (5A each), 4 AI, 2 AO, and RS485 with built-in hour meter for direct equipment control.
4 DI / 8 DO
Digital I/O 0–30 V, 5 A @ 12 V outputs.
4 AI / 2 AO
Analog I/O 0–30 V single wire.
RS485
Serial Modbus and industrial protocols.
Hour meter
Run-hour and usage tracking.
Take a closer look.
4 digital inputs, 8 digital outputs (5A/12V), 4 voltage-based analog inputs (0–30V), and 2 analog outputs enable direct sensor monitoring and actuator drive without any external expansion modules.
RS485 interface enables reliable wired communication with upstream gateways, HMIs, and Modbus-based devices in industrial control architectures.
Built-in hour meter tracks equipment run time natively — eliminating the need for an external runtime counter in genset and machinery applications.
At 158×126×42.5 mm with IP65 front-face protection, mounts directly into control panels while keeping the terminal side accessible for wiring.
Technical specifications.
power
- Supply voltage
- 9–30 V DC
- Max supply voltage
- 30 V DC
- Reverse polarity protection
- 0 to -30 V DC
- Max operating current
- <100 mA
interfaces
- Digital input
- 4 (0–30 V)
- Digital output
- 8 (5 A, 12 V)
- Analogue input
- 4 (0–30 V single wire)
- Analogue output
- 2
- RS485
- 1
- Counter input (0–1000 Hz)
- 0
- Hour meter
- 1
- LED indication
- NA
- Alternator excitation
- 120 mA
physical
- Dimension (L×W×H)
- 158 × 126 × 42.50 mm
environmental
- Operating temperature
- -10 °C to +70 °C
- Operating humidity
- 85% RH
- Vibration
- 2g, 10–150 Hz
- Enclosure ingress protection (IP)
- IP65 (Front), IP20 (Back)
Tor Apollo – Device Configuration & Provisioning
Configure and manage this gateway with Tor Apollo. Web-based setup, FOTA updates, and provisioning for deployment and maintenance without on-site visits.
Learn about Tor Apollo →Use cases
Practical applications for supervisory control and automation with Tor Saturn 321.
Genset and alternator control
120 mA alternator excitation for generator start/stop and supervision.
Industrial supervisory control
4 DI, 8 DO, 4 AI, 2 AO for status, alarms, and analog setpoints.
Building automation
RS485 for Modbus devices; hour meter for run-time tracking.
Wiki knowledge base
Firmware, first-start guides, usage scenarios, and certificates.
