Low Alarm Operation (Set < Reset); High Alarm With Fail-Safe Operation (Set > Reset); Low Alarm With Fail-Safe Operation (Set < Reset); Time Delay Operation - Helios PD2-6100 Instruction Manual

Helios PD2-6100 Strain Gauge, Load Cell, and mV Meter
Low Alarm Operation (Set < Reset)
For Manual reset mode, ACK can be pressed anytime to turn "off" relay. For
relay to turn back "on", signal must go above set point and then go below it.
High Alarm with Fail-Safe
Operation (Set > Reset)
Note: Relay coil is energized in non-alarm condition. In case of power failure,
relay will go to alarm state.
Low Alarm with Fail-Safe
Operation (Set < Reset)
Note: Relay coil is energized in non-alarm condition. In case of power failure,
relay will go to alarm state.

Time Delay Operation

The following graphs show the operation of the time
delay function.
When the signal crosses the set point, the On time
delay timer starts and the relay trips when the time
delay has elapsed. If the signal drops below the set
point (high alarm) before the time delay has elapsed,
the On time delay timer resets and the relay does not
change state. The same principle applies to the Off
time delay.
Note: If "Automatic or Manual (A-mAn)" reset mode is selected, the LED follows
the reset point and not the relay state when the relay is acknowledged.
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Instruction Manual