Electrical installation: input / output 71
DOUT1 - typical connections to an ABB NextMove e100:
Digital outputs DOUT3 - DOUT6
Location: OPT1, pin 2 (DOUT3), 1 (DOUT4), 9 (DOUT5), 8 (DOUT6), 10 (USRV+)
The optically isolated general purpose outputs are designed to source current from a
common user supply (USRV+). The TLP127 has a maximum power dissipation of
200 mW at 25 °C. Each 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.
Digital output circuit - DOUT3 shown:
MicroFlex e150
DOUT1-
CREF1
8
TLP280
9
3
13
DIN4
DOUT1+
X3 X9
TLP127
User
supply
24 V
User
supply
GND
NextMove e100 / controller
Mint
OUTX(3)
TLP127
200 mA
MicroFlex e150
OPT1
10
2
USRV+
DOUT3
User supply
V+
User supply
GND
Load
(relay with
diode shown)
Fuse