Loop Leader PD6620 Series Loop-Powered Flow Rate/Totalizers
Instruction Manual
7
Rate/Totalizer
Rate Display
Top display: -9999 to 99999;
Bottom display: -9,999,999 to 99,999,999
(with commas)
Total & Grand
Total Display
Top display: -9999 to 99999;
Bottom display: 0 to 99,999,999
(with commas)
13-Digit Total &
Grand Total
Up to 9,999,999,999,999 using both lines
with 13-digit total feature enabled.
Total & Grand
Total Indication
On bottom display, “T” indicates total and
“GT” indicates grand total (not available on
bargraph models)
Total Decimal
Point
Up to four decimal places on top, up to
seven decimal places on bottom. Total
decimal point is independent of rate
decimal point.
Totalizer
Calculates total based on rate and rate
units to display total in engineering units. A
custom factor must be programmed if using
custom defined units.
Time Base
Seconds, Minutes, Hours, Days
Totalizer
Rollover
Totalizer rolls over when display exceeds
99,999,999 (9,999,999,999,999 if 13-digit
limit enabled). Relay status reflects display.
Total & Grand
Total Reset
Via front panel button, external contact
closure on digital input, or MeterView XL.
Total & Grand
Total Reset
Passwords
Total and grand total passwords may be
entered to prevent resetting the total or
grand total unless a password is entered.
Non-Resettable
Grand Total
Grand total reset may be disabled through
the meter interface. Grand total reset may
be permanently disabled by selecting
YES
at the
PERMLOCK
menu.
Caution: Once the Grand Total has been
programmed as “non-resettable” the
feature cannot be disabled
Batch Control
Methods
Automatic or Manual, count up or count
down
Manual Batch
Start
Pressing F1 function key starts the batch
Manual Batch
Pause/Stop
Pressing F3 once pauses the batch,
pressing it twice cancels the batch
Automatic
Batching
The Loop Leader can be used as an
automatic batch controller where batches
run continuously without operator input
Batching Relay
Operation
Single or dual-relay batching with optional
preclose for dual-stage operation
Batch Preset
Set via F2 function key anywhere between
0.0001 to 99,999 based on batch total
decimal point. If batch total is assigned to
bottom, the preset can be up to 8 digits.
Batch Preclose
For two-stage batch application, a preclose
value can be set to close the main flow
line.
Automatic Batch
Restart Delay
1 to 9,999 seconds. The batch will
automatically restart after completion
of the last batch.
Common Open Collector &
Relay (Alarm) Specifications
Number
Two open collectors & two relays
High or Low
Alarm
User programmable for high or low alarm
Alarm Deadband
0-100% FS, user programmable
Output
Assignment
Pulse, Alarm, Timer, Stopwatch, or
Disable
Alarm Output
Source
Assign to rate, total, grand total, or digital
input
On & Off Time
Delay
0 to 9,999 seconds
Fail-Safe
Operation
Independent for each open collector
and relay.
Fail-safe on, the output is on under
normal conditions.
Fail-safe off, the output is on under
alarm conditions.
Alarm Operation
Automatic, automatic with manual
override, latching (manual reset
anytime), latching with reset after
cleared (manual reset only after alarm
has cleared)
Alarm Indication
Programmable: red backlight, flashing
display, alarm symbol (!); (symbols not
available on bargraph models). Bargraph
segment flashes on alarm.
Alarm Message
Programmable: 8 characters maximum;
displayed every 10 sec for 1 sec on
bottom line. May be turned off.
Alarm
Acknowledge
Front panel ACK button or external
digital input resets output and screen
indication.
Auto Initialization
When power is applied to the meter,
open collectors and relays will reflect
the state of the input to the meter.
Timer Output
One-shot or Continuous
Off Time Delay: 1 sec to 99:59:59
(hrs:min:sec)
On Time: 1 sec to 99:59:59 (hrs:min:sec)
Stopwatch
Output turns on when started and off
when stopped.
Open Collector Outputs
Rating
Isolated open collector, sinking NPN
5-
30 VDC @
150 mA maximum
Output
Assignment
Pulse, Alarm, Timer, Total Reset,
Stopwatch on/off, or Disable
Pulse Output
Source
Rate, Total, Grand Total, or Test
Frequency
Pulse Output
Factor
0.000001 to 999,999.9
Pulse Width
0.5 ms @ 1 kHz; 500 ms @ 1 Hz;
50% duty cycle
Pulse Output
Frequency
1,000 Hz maximum
Quadrature Pulse
Output
Available for Output 2 (90° behind
Output 1) 500 Hz max
Alarm Output
Source
Assign to Rate, Total, Grand Total or
Digital Input
