semaphore TBOX LT2-530 Series, User Manual, Page: 156 / 197

Version : 1.09 156
19. Technical specifications
19.1. Common to all models
General
Processor 32 bits, ARM based, 400 Mhz
Clock
Clock Drift
Realtime Clock
Typical: 1.7 s / day @ 25°C
Watchdog Watchdog circuitry included
Maximum process cycle time = 1 sec.
Toggle Switch STOP - RUN - RESET (see chapter 5.6)
LED Green 2 Hz
Green 0.5/Hz
Green ON
Red 8 Hz
Normal operation
Application stopped
OS stopped
Presence of Alarm(s)
Power Supply - VOLTAGE Different ranges according to functionalities:
Functionalities Voltage on Vin required Voltage on Vbat
- CPU, Communications, Analog Inputs 8

30 VDC 10

16 VDC
- Analog Outputs 9

30 VDC 10

16 VDC
- Charger for backup battery (12 V Lead Acid) 20

30 VDC -
Power Supply – CURRENT (Typical)
All models of –LT2 Current with: Vin=24V Current with: Vin/Vbat=12V
- Main board, I/O, Com (RS, Eth., USB), 3G (idle) 50 mA 90 mA
- 3G (in com) + 50 mA + 90 mA
- USB to power external device + 130 mA + 260 mA
- Analog output + 22 mA (per output) + 22 (per output)
- Charger + 210 (in charge) -
12 V Battery charger
- Power supply Vin required
- Battery model
- Charge Mode
- Voltage
- Current
- In Charge
- In Discharge
20 -> 30 VDC
12 V Lead Acid. Typical 7 A/h
Constant current. Limited voltage
Temperature compensated: 13.8V @ 25°C – 18 mV / °C
Maximum: 250 mA fixed
Stops when temperature > 55 °C
External 12 V backup battery automatically disconnected if voltage < 10 V
Current max.: 2A
3 V Internal Battery
Voltage 3 V
Model Lithium CR-2450
Use Backup of Clock and SRAM (datalogging) when TB
OX
LT2 is out of power
Lifetime
Typical:
Mechanical:
Battery consuming only when
TB
OX
LT2
is out of power and plastic strip has been
removed.
4 years @ 25 °C.
10 years
We advise to consider replacing the 3V lithium battery when it has
been used during 2 years. See procedure chapter 19.2.