1.3.5Linear Inputs
For linear mA input ranges, connection is made to Terminals 4 and 6 in the polarity shown in Figure 1-4. For linear mV and V ranges, connection is made to Terminals 4 and 5 in the polarity shown in Figure 1-4. For details of the linear input ranges available, refer to Appendix A.
1.3.6Remote Run/Hold Input
With this option fitted, Terminals 11 and 12 are used for external Run/Hold control of the currently-selected program; this has an effect identical to that of the front panel RUN key. These terminals may be connected to (a) the voltage-free contacts of a switch or relay, or (b) a TTL-compatible voltage. This is an edge-sensitive input for which the following convention has been adopted:
For TTL input, OFF = logic 1 and ON = logic 0
For a voltage-free input, OFF = open and ON = closed
Program control is as follows: | |
OFF-ON transition: | The currently-selected program will run (or |
| will resume running if it is currently held). |
ON-OFF transition: | The currently-running program will be |
| held. |
NOTE: When this input is used, the front panel RUN key can be used only to abort a program. Powering-up the Profile Controller whilst this input is ON will not cause a program to run. The RS485 Serial Communications option and the Remote Run/Hold option are mutually exclusive.
1.3.7Relay Outputs
The contacts are rated at 2A resistive at 120/240V AC.
1.3.8SSR Drive Outputs
These outputs produce a time-proportioned non-isolated DC signal (0 - 4.2V nominal into 1k minimum).
1.3.9Solid State Outputs
These outputs provide up to 1A AC drive with a longer lifetime than an electromechanical relay. For further details, refer to Appendix A.
