Processor module (psio), Inputs, Outputs – Carrier 19XL User Manual
Page 235
Processor Module (PSIO) (
Inputs
Each input channel has 3 terminals; only 2 of the terminals are used. Application of machine
determines which terminals are normally used. Always refer to individual unit wiring for terminal
numbers.
Outputs
Output is 20 vdc. There are 3 terminals per output, only 2 of which are used, depending on
the application. Refer to the unit wiring diagram.
Click here for Figure 41 — PSIO Module Address Selector Switch Locations and LED
Locations
Click here for Figure 42 — LID Module (Rear View) and LED Locations