Facility Explorer FX15 - Connecting the Triacs

FX15 Controller Technical Bulletin
41
Note: Relays DO6-DO8 are not hardware interlocked, and incidental
energization of more than one relay at the same time might lead to fan
motor damage.
Connecting the Triacs
The FX15 controller triac (0.5 A, 24 VAC) digital outputs are
commonly used to operate in Position Adjust Type (PAT) and Duration
Adjust Type (DAT) modes.
54
57
5655
53
52
51
DO6 no DO8 no DO7 no DO4 no
DO3 no
DO 4/5 Com
DO 6/7/8 Com
Figure 42: Triac Groups
In particular, the Digital Outputs PAT mode is used through the triac
outputs to drive Incremental Valve Actuators.
Figure 43 is an example of a triac connection.
Figure 43: Connecting an Incremental Actuator
FX15 Terminals
Description
DO4 (51)
24 V ~ Down command
DO5 (52)
24 V ~ Up command
V ~ Hot (93)
24 V ~ Hot Reference
DO 4/5 Com (53)
24 V ~ Common Reference