Precision Digital PD6310 - Manual (Page 62)

Model PD6210 & PD6310 Batch Controllers Instruction Manual
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relay will stop, and will re-start only after the interlock relay is re-
activated by the digital inputs (switches).
Sample Relay Operation
The sampling function allows the operator to set a set point for a
“sampling” relay. This can be done for the rate, total, or grand total. Each
time the relay reaches the set point, it will close that relay’s contacts for a
programmed period of time
A rate sampling relay will activate for the sample time (sam t), up to
600.0 seconds, every time the set point rate is reached.
A total sampling relay will activate for the sample time (sam t), up to
600.0 seconds every time the process has batched the amount
programmed for the set point, and every time this amount has been
batched afterward. (See the diagram below for more details). The utility
of this function can, of course, be expanded beyond sampling and be
used whenever a timed relay output closure is required when the batch
total interval reaches a certain set point.
Relay and Alarm Operation Diagrams
The following graphs illustrate the common operation of the relays,
status LEDs, and ACK button.
High Alarm Operation (Set > Reset)