Electric Company Computer Drive User Manual

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Input / Output 5-9MN1942
5.2.5 General purpose / status output DOUT0
Location Connector X3, pins 1 & 11
(Mating connector: Weidmüller Minimate B2L 3.5/20)
Name S tatus / DOUT0
Description General purpose opto-isolated digital output
Output current: 100mA maximum
User supply +28VDC maximum
Update interval: 1ms
The optically isolated general purpose / status output is designed to source current from the user
supply as shown in Figure 30. The PS2562L has a maximum power dissipation of 200mW at
25°C. The maximum saturated voltage across the outputs when active is 1.0VDC, so it can be
used as a TTL compatible output.
The output includes a self-resetting fuse that operates at approximately 200mA. The fuse may
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. The sense of the output can be configured in Mint WorkBench, and its state is
displayed in the Spy window .
DOUT0+
MicroFlex e100
TLP 127
DOUT0-
Load
(Relay with
diode shown)
Fuse
User supply
V+
User s upply
GND
200mA
220R
+3.3V
11
1
[Error]
‘X3’
4n7
4n7
Figure 30 - DOUT0 output circuit
By default, DOUT0 is configured as an error status output, which becomes inactive 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
OUTPUTACTIVELEVEL can be used in the command window. See the Mint help file for details.
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