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Input/ Output 5-9MN1942

5.2.5 General purpose / status output DOUT 0
Location Connector X3, pins 1 & 11
(Matingconnec tor: Weidmüller Minimate B2L 3.5/20)
Name Status/ DOUT0
Description General purpose opto-isolated digital output
Outputc urrent: 100mAmaximum
User supply +28VDC maximum
Updateinterv al: 1ms
Theoptically isolated gener al purpose / status output is designed to sour ce current from the user
supply as shown in Figure 30. The PS2562L has a maximum power dissipation of 200mWat
25°C.The maximumsaturated voltage across theoutputs when active is 1.0VDC , so it can be
usedas aTTL compatible output.
Theoutput includesa self-resetting fuse that operatesat approximately 200mA. The fuse may
takeup to 20 s econds to reset after the load has been removed. If the output is used t odirec tly
drive a relay, a suitably rated diode must be fitted across the relay c oil, observing the correct
polarity. This is to protect the output from the bac k-EMF generated by the relay coil when itis
de-energized. The sense of the output can be conf igured in Mint WorkBench, and its state is
displayed in the Spyw indow.
DOUT0+
MicroFlexe100
TLP127
DOUT0-
Load
(Relaywith
diodeshown)
Fuse
Usersupply
V+
Usersupply
GND
200mA
220R
+3.3V
11
1
[Error]
‘X3’
4n7
4n7
Figure30 - DOU T0 output circuit
Bydefault, DO UT0 is configured as an error statusoutput, which becomes inactiv e in the event
of an error. When the MicroFlex e100 is connected to Mint WorkBench, the active level of the
output can be configured using the Digital I/O tool. Alternatively, the Mint keyword
OUTPUTACTIVELEVELcan be us ed in the command window. See the Mint help file for details.
111