Electrical installation: input / output 69
Status output (DOUT0)
Location: X3, pins 1 (Status-), 11 (Status+)
The optically isolated status output is designed to source current from the user
supply. The TLP127 has a maximum power dissipation of 200 mW at 25 °C. The
output includes a self-resetting fuse that operates at approximately 200 mA. The fuse
can take up to 20 seconds to reset after the load has been removed. If the output is
used to directly drive a relay, a suitably rated diode must be fitted across the relay
coil, observing the correct polarity. This is to protect the output from the back-EMF
generated by the relay coil when it is de-energized.
Status output circuit:
The status output becomes active in the event of an error, or when the STO function
is activated. When the MicroFlex e150 is connected to Mint WorkBench, the active
level of the output can be configured using the Digital I/O tool. Alternatively, the Mint
keyword OUTPUTACTIVELEVEL can be used. The output’s state is displayed in the
Spy window. See the Mint help file for details.
General purpose output DOUT0
The status function must be disabled before the output can be used for other
purposes. To disable the status function, the command GLOBALERROROUTPUT=-1
must be issued from a Mint WorkBench Command window, or included in a Mint
program. The command GLOBALERROROUTPUT=0 enables the status function. See
the Mint help file for details.
TLP127
200 mA
MicroFlex e150
X3
11
1
Status+
Status-
User supply
V+
User supply
GND
Load
(relay with
diode shown)
Fuse
[Error]
To Next Page
Loading...
Need help?
General
