Proface LT4300M - 5.7 Modular HMI + Control" - Manual (Page 97)

LT-4201TM/4301TM Hardware Manual
97
Wiring Diagram
The figure describes the wiring diagram of the LTs digital outputs. Refer to Terminal Blocks.
NOTE: When terminals A2 and B2 (signal name: Q1, Q0) are wired to external I/O, use the same
power source for external I/O and the LT. Refer to Power Supply Connections.
Standard output:
(1) When connecting as power surges
Pulse Output/PWM Output/High-speed Counter (Synchronize Output):
NOTE:
Q0 and Q1 circuits are push-pull circuits. The following is the operation of the push-pull circuit at
the Sink Output and the Source Output:
 Sink Output: +24(V) is output to terminal Q0, Q1 when the logic for Q0, Q1 is off.
 Source Output: 0(V) is output to terminal Q0, Q1 when the logic for Q0, Q1 is off.
Standard Output terminals Q2 or later are common open collector outputs. Do not connect Fast
Output terminals Q0, Q1 and Standard Output terminals Q2 or later. It will short. If you add a
manual circuit to terminal Q0, Q1, isolate the manual circuit and terminal Q0, Q1 with a relay.
Without isolation, it will short.