Qeedji SMT210, User Manual

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Vin min Vin max VOH min VOH max IOH max VOL max IOL max VIH min VIL max
GPIO2 -0.5V 6.5V 5V 0.4V 10mA 1.17V 0.63V
GPIO3 -0.5V 6.5V 5V 0.4V 10mA 1.17V 0.63V
The GPIO2 et GPIO3 have a 10 KOhms pull-up to 5 V. A er a device restart, the GPIO default voltage levels are 5 V.
Several use case schema cs
Output configura on for the GPIO2 or GPIO3:
Two wires input configura on for GPIO2 or GPIO3:
Internal relay driving with the GPIO1
To drive the relay, the GPIO1 has to be configured in OUT mode (Write). A er a device restart, the GPIO1 default voltage level GPIO1 is 0 (relay is opened). A logic level 1 on the
GPIO1 allows to close the relay. Once the relay is closed, the PIN1 and the PIN2 of the relay are connected. The relay can support 1 A max under 24 VCC. . The logic level 0 on the
GPIO1 allows to open the relay. The PIN1 and PIN2 can be switched.
Relay usage schema cs
Applica on when using a strike
In case the device SMT210 has to drive a strike for an electric door, it is highly recommended to check, before any use, that a addi onnal freewhell diode is really installed with the
strike. Please refer to the strike User manual. If no frewheel diode is mounted on the electrical system of the strike when using for the first me, the user acts to deliberatly
degrade the SMT210 device which is not warran ed in this case.
electrical system example:
The only freewheel diode (D1), mounted in parallel of the strike (L1), ensure the electric protec on against the huge over-voltage which can degrade, when the relay is opening, a
part of the SMT210 device.
example of electrical system with a strike and its freewheel diode:
CPU/GPIO2
SMT210
Logic gate, transistor or opto-coupler
Output
Power supply
+ -
3 (Phoenix)
5 (Phoenix)
or CPU/GPIO3
or 4 (Phoenix)
PERIPHERAL
CPU/GPIO2
SMT210
Switch or dry loop
Input
3 (Phoenix)
5 (Phoenix)
or CPU/GPIO3
or 4 (Phoenix)
PERIPHERAL
Max. + 24 V
Device to control
1 (Phoenix)
relay
CPU/GPIO1
2 (Phoenix)
SMT210
PERIPHERAL
SMT210
1 (Phoenix)
2 (Phoenix)
relay
CPU/GPIO1
Max. + 24 V
D1
L1
ES
PERIPHERAL