Wiring Signals
47
6
6
6
6
6
6
6
6
6
Connecting Digital Output Signals
shows how to connect a digital output (line 0, in this case)
to a DT9820 Series function module.
Figure 11: Connecting Digital Outputs (Shown for Line 0)
illustrates how to connect a relay to the STP9820. (Refer to
for information on how to install the relay driver that is
needed to drive this relay.) In this scheme, one side of the relay is
connected to the +Vcc power supply; this connection allows the
internal cache diodes to limit the voltage spikes from the relay coil.
The other side of the relay is connected to the appropriate digital
output terminal (in this case, digital output 0 or TB4, 1) on the
STP9820.
CAUTION:
The ex5 V power supply voltage must not exceed 5.25 V or
damage may result to the DT9820 Series module.
TB4, 1
TB4, 2
TB4, 9
Digital Output Line 0
Digital Ground
-
+
500
Ω
5 V
0 Out = LED On
STP9820 Screw
Terminal Panel
Summary of Contents for DT9820 Series
Page 1: ...DT9820 Series UM 18219 B Getting Started Manual...
Page 20: ...Chapter 2 12...
