e.g.
high total low total
P-54 P-55
8 digit total
1325 4679
If it is wished to momentarily view an alternate reading while in the run mode and
P-39
≠ 0, press the desired programmer key ( ‘HEAD’ and ‘FLOW’ are not applicable
to the pumped volume totalling )
e.g.
normal display is high total, P-39 = 1
low total is momentarily displayed
normal display of the
high total returns
If P-39 = 0, alternate reading cannot be momentarily displayed. Pressing the desired
key will change the display and hold it there until the next alternate reading is selected.
In the program mode, the high and low totals can be viewed or preset to any value by
P-54 and P-55 respectively.
The pumped volume readings ( high and low total ) may be scaled down by factors of
10 ( P-52 ) to slow down the totalizer’s rate of fill, and its decimal point ( P-53 )
positioned for the resolution required. If it is desired to change the scaling factor or
decimal point location after totalling has begun, record the high and low totals and
reset the totalizer to zero.
Further to alarm and pump functions, relays may be programmed to act as a
momentary contact closure for a remote totalizer, flow sampler or time sampler ( refer
to Applications \ Relays ). The duration of a momentary contact closure is 200 msec
for which the corresponding relay status LED will flash. As a remote totalizer relay,
the contact is closed each time the displayed total is increased by the amount entered
into P-56. As a flow sampler relay, the contact is closed each time the volume of
liquid, as set by P-57 and P-58, is pumped. As a time sampler relay, the contact is
closed at the rate of the time period entered into P-59.
The mA output responds to the liquid reading only ( level, if P-34 = 0 or volume if
P-34 ≠ 0 ). In the event of fail-safe due to loss of echo, the mA output will respond as
programmed by P-6 and P-74, but the totalized volume will hold its last reading.
2
PL-443 6 – 12