PD2-6210
Helios Large Display Analog Input Batch Controller Instruction Manual
39
Setting the Relay Operation (
relay
)
This menu is used to set up the operation of the relays.
1. Relay assignment
a. Rate for low and high alarm
b. Total for batch control relays
c. Grand total for grand total
alarms
d. Modbus input process variable
2. Relay action
a. Automatic reset only (non-latching)
b. Aut manual reset at any time (non-latching)
c. Latching (manual reset only)
d. Latching with Clear (manual reset only after alarm condition has cleared)
e. Pump alternation control (automatic reset only)
f. Sampling (the relay is activated for a user-specified time)
g. Off (relay state controlled by Interlock feature)
3. Set and reset points
4. Fail-safe operation
a. On (enabled)
b. Off (disabled)
5. Time delay
a. On delay (0-999.9 seconds)
b. Off delay (0-999.9 seconds)
6. Relay action for loss (break) of 4-20 mA input (ignore, on, off)
Note: Fail-safe should not be used for relays assigned to batch control.
Rate Alarms Only Active During a Batch Process
The rate alarms are active only during a batch process. As a result, rate
alarms should not be programmed with manual reset, as they cannot be
manually reset during a batch process, the only time they are active.
!
Caution!
During setup, the relays do not follow the input
and they will remain in the state found prior to
entering the Relay menu.
!
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