PART THREE - OPERATION
SECTION 7 - RELAY OVERFEED TIMER FEATURE
Accu4™ Low-range Turbidimeter System
Rev. 2-300
70
Table C -- RELAY OVERFEED TIMER INTERACTIONS
WITH OTHER ANALYZER FUNCTIONS
Function Conditions
Resulting Action of Overfeed Timer
Manually Holding Relay Operation (when outputs are held at start of calibration)
Off relay held
in “off”
Overfeed timer
was off
Overfeed timer remains off. After you change back to
ACTIVE from the HOLD mode, the overfeed timer will remain
off until the measured value (or a value you simulate) causes
the relay to turn on.
On relay held
in “on”
Overfeed timer
was counting
Overfeed timer continues its “count down” until it turns the relay
off. If you release HOLD before the timer “times out,” the timer
continues its “count down” until it turns the relay off or the timer
automatically resets when the measured value (or a value you
simulate) causes the relay to turn off. If you release HOLD after
the timer has “timed out,” it must be manually reset (Part Three,
Section 6.3).
On relay held
in “on”
Overfeed timer
was timed out
Overfeed timer remains off which keeps the relay turned off.
You must manually reset the timer (Part Three, Section 6.3).
Manually Transferring Relay Operation (when outputs are transferred at start of calibration)
Off relay is
transferred to “on”
Overfeed timer
was off
Overfeed timer starts its “count down” until it turns the relay off.
After you change the “on” relay back to “off,” the overfeed timer
automatically resets.
On relay is
transferred to “off”
Overfeed timer
was counting
Overfeed timer automatically resets. After you change the “off”
relay back to “on,” the overfeed timer starts its “count down”
until it turns the relay off, or the timer automatically resets
On relay is
transferred to “off”
Overfeed timer
was timed out
again when the measured value (or a value you simulate)
causes the relay to turn off.
Manually Testing Relay Operation (using TEST/MAINTENANCE menu screens)
Off relay is
changed to “on”
Overfeed timer
was off
Overfeed timer starts its “count down” until it turns the relay off.
After you change the “on” relay back to “off,” the overfeed timer
automatically resets.
On relay is
changed to “off”
Overfeed timer
was counting
Overfeed timer automatically resets. After you change the “off”
relay back to “on,” the overfeed timer starts its “count down”
until it turns the relay off, or the timer automatically resets
On relay is
changed to “off”
Overfeed timer
was timed out
again when the measured value (or a value you simulate)
causes the relay to turn off.
Operating a Relay By Simulating a Value (using TEST/MAINTENANCE menu screens)
Off relay is turned “on”
by simulated value
Overfeed timer
was off
Overfeed timer starts its “count down” until it turns the relay off.
After you change the “on” relay back to “off,” the overfeed timer
automatically resets.
On relay is turned “off”
by simulated value
Overfeed timer
was counting
Overfeed timer automatically resets. After you change the “off”
relay back to “on,” the overfeed timer starts its “count down”
until it turns the relay off, or the timer automatically resets
On relay is turned “off”
by simulation value
Overfeed timer
was timed out
again when the measured value (or a value you simulate)
causes the relay to turn off.
