Connecting Speed Signals Across Modules - Allen-Bradley 1444-TSCX02-02RB User Manual

Chapter 2 Install the Dynamix 1444 Series Monitoring System
74

Connecting Speed Signals across Modules

When an external signal is used to serve multiple DYN modules, the
recommended wiring solution is as follows.
1. Wire the source signal to the TTL inputs on the first module, per
Inputs on page 66.
2. On the first module, wire one of its outputs to the TTL inputs. (#1) on
the next module per
page 58.
Example of wiring Discrete Output 0 to Tacho Input 0
Example of wiring Discrete Output 1 to Tacho Input 1
3. Daisy chain additional modules by repeating
4. To output the TTL signal the wired opto-isolated output must be
configured to replicate the "Local TTL Tach 0 Input" or "Local TTL
Tach 1 Input", as appropriate. See
page 111.
Use this method to daisy chain the external TTL signal to be sure that there is
isolation between modules. See
information.
Rockwell Automation Publication 1444-UM001D-EN-P - June 2018
Opto-isolated (Open Collector) Outputs on
step 1
Hardware Configuration Page on
Speed Signal Replication on page 58
Tacho
and step 2.
for more