Vivotek SC8131 - DI;DO Diagram; General I;O Terminal Block

VIVOTEK
User's Manual - 29
DI/DO Diagram
1. The DO+ pin provides a 12V output voltage.
2. The max. voltage for DO- pins is 30VDC (External power).
In order to control AC devices, the following diagram can be taken in consideration. This
diagram uses a relay to control the ON/OFF condition of the AC device.
3. An external relay can be triggered by using DO+ or by an external power source, depending
on the type of relay you use.
4. In case of using an individual relay (instead of using a relay module), for protection against
voltage or current spikes, a transient voltage suppression diode must be connected in parallel
with the inductive load.
The 12V connection can be used to energize a relay coil with up to 50mA. If more than 50mA is re-
quired, an external power supply can be applied.
DI-
DO+
DI+
DO-
Switch
External Device
External DC power
Dry contact with external DC power source to supply a relay. Dry contact is the safest connecon
to protect devices.
NC
NO
Relay
Photo
Coupler
DC
DC 0V
DC 0V
External AC power
with Protected Eart
h
AC
PE
PE
DO+DO-DI+DI-
General I/O Terminal Block
This Network Camera provides a general I/O terminal block which is used to connect external
input / output devices. The pin denitions are described below.
The maximum DO+ 12V output load is 0.5A.