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Chapter 7 Installation
7.5.8.3 Switchable sensor supply VEXT
RS232
Note:
The switchable sensor supply output is short-circuit-proof.
The switchable sensor supply VEXT
RS232
is applied to the connector of the RS232 interface (see
"Connecting the sensors, actuators and power supply" on page 50).
U
out
3,3V
I
max
180mA
7.5.8.4 Isolated switch contact (NO, CC)
Important note:
The user must ensure that the current on the isolated switch contact does not
exceed 130mA .
Equivalent circuit diagram for the isolated switch contact
I
max
130mA
U
max
32V
R
on
35Ω
f
max
1000Hz
7.5.9 Technical details about energy management
The Device Logic execution is only stopped if the internal supply voltage falls below 2,9V and the
myDatalogEASY IoTmini switches to energy saving mode in which only the charge control is active. In this
case, the charge control tries to charge the rechargeable battery up to 3,8V . The "UV_LOCKOUT" log entry
is also entered in the device log when activating energy saving mode. The rechargeable battery of the power
supply unit can be charged up again if the device is in energy saving mode and an external supply or charging
voltage (V IN) is connected. Otherwise the myDatalogEASY IoTmini remains in this energy saving mode until
the rechargeable battery is completely discharged.
Energy saving mode is terminated and Device Logic execution is activated again, once the rechargeable
battery voltage exceeds 3,2V when recharging.
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Содержание myDatalogEASY IoTmini
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