Johnson Controls EasyIO FS Series Quick Start Manual page 5

Input, output, and 24 VAC Class
2 transformer power input wiring
diagrams
Risk of electric shock
Disconnect the power supply before you make
electrical connections.
Complete the wiring and check all wiring connections
before you connect the power supply to the controller,
because short circuits or wires connected incorrectly
can cause damage to controllers and void warranties.
FS-32 basic input, output, power, and serial device wiring
Use Class 2 device wiring. Do not reclassify and
install as Class 1, 3 or power and lighting wiring.
WARNING
CAUTION
WARNING
CAUTION
Do not exceed controller electrical ratings, because
this can result in permanent damage to the controller
and void warranties.
Important
Only use copper conductors. Wire the controller
in accordance with local, national, and regional
regulations
CAUTION
Use the correct electrostatic discharge precautions
throughout installation, setup, and service to avoid
damage to the controller and controller components.
CAUTION
DO1 to DO8 are voltage free contacts. Use either an
external 24 VAC or 24 VDC power source.
FS-32 Quick Start Guide 5