GV75MG User Manual
The example connection is shown as follows:
Figure 8.
Example of Connection for Negative Trigger Input
5.6.
Digital Outputs
The outputs are of open-drain type with no internal pull-up resistor and it can also be used to
control a relay. It means that the user has to connect a pull-up resistor or a relay coil between
the output pin and any positive voltage (32V max) to generate a correct output. Each output can
drive a continuous current of 150mA max.
The green wire is low side 150mA max, and the blue wire is low side 150mA max with latch.
The electrical conditions are:
Table 10.
Electrical Characteristics of Digital Outputs
Logical State
Electrical State
Enable
<1.5V, drive current is 150mA
Disable
Open or the pull-up voltage (max 32V)
Note:
1. The relay output can be latched by software, so even if GV75MG is restarted or powered down
in some cases, the relay output will not change. To use the latch function, the main power and
backup battery should work normally. Otherwise, the relay will always be in normally closed
status as it is.
Digital outputs are used for cutting/restoring GND. The examples of connections are:
Figure 9.
Example Connection to Drive an LED
Figure 10.
Example Connection to Drive a Relay
Note:
QSZTRACGV75MGUM0101 9
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