YOKOGAWA 800 plus, Instruction Manual

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In batch control mode with external resets, pushing the RESET key initiates cycling.
Grounding an external Gate input for a minimum of 3.33 ms then starts each new fill
cycle by energizing Relay #1 and resetting the Batch Total. Gate time is not used.
Three values are tracked and can be separately displayed by pressing the RESET key: Item
#1, the Batch Total; Item #2, the Grand Total of all batches or Number of Batches (select-
able during setup); and Item #3, the Fill Rate.
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Item #1, Batch Total, is the total for that batch. It may be configured to count up from 0 to
a preset, or to count down from a preset to 0. The preset value is placed in
SETPT1
.
SCALE1 is positive whether counting up or down.
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Item #2, Grand Total, is the sum of previous Batch Totals and the current Batch Total. It
can overflow to exponential format.
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Item #2 (alternate), Number of Batches, is the current count of batches. SCALE1 does
not apply. dECPt1 is set to 1.
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Item #3, Fill Rate, is calculated with a fixed 20 ms (or 1 cycle min) gate time . It may be
displayed as Item #3.
PERIOD MODES
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PERIOD A ONLY (A _ OnLy) displays period of Channel A as Item #1.
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PERIOD A B (A __ b __ ) displays period of Ch A as Item #1 and of Ch B as Item #2.
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PERIODS A+B , A-B , AxB , A-B , A/B (Extended counter) display arithmetic combinations
of Periods A and B as Item #1, Period A as Item #2, and Period B as Item #3.
TIMING MODES
STOPWATCH TIMING, “ON” TIME OF A MACHINE WITH 0.00 HOUR RESOLUTION
Application: Display daily “on” time of
a machine in hours with 2 decimals. For
machine maintenance, also track accu-
mulated hours since last reset.
Solution: Tie a relay across the AC input
to the machine so that the relay closes to
ground when power is applied. Apply the
relay output across both the A & B inputs
so that the voltage is 5V when the contacts
are open and 0V when they are closed. Set
Input to “Stopwatch A to B.” Select nega-
tive trigger slope for A and positive for B.
Under Config, set Display Mode to sec. Set
Gate Time to 0.01 sec. Select the coordi-
nates of 2 points scaling method for Item
#1 (daily time) and Item #1 (accumulated
time). For Item #1, set DecPt1 to 2 places,
set Hi In1 to 3600 (sec) and Hi Rd1 to 1.00
(hrs). For Item #2, set DecPt2 to 0 places,
set Hi In2 to 3600 and Hi Rd2 to 1 (hr).