Loop Leader PD6620 Series Loop-Powered Rate/Totalizer Instruction Manual
7
Rate/Totalizer
Rate Display
Capability
Top display: -9999 to 99999; bottom display:
-9,999,999 to 99,999,999 (with commas)
Total & Grand To-
tal Display
Capability
Top display: -9999 to 99999; bottom display:
-9,999,999 to 99,999,999 (with commas)
13-Digit Total &
Grand Total
Capability
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 or external contact clo-
sure on digital input
Total & Grand
Total Reset
Passwords
Total and grand total passwords may be en-
tered 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 per-
manently disabled by selecting
YES
at the
PERMLOCK
menu.
Caution: Once the Grand Total has been pro-
grammed as “non-resettable” the feature can-
not 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 auto-
matic batch controller where batches run con-
tinuously 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 deci-
mal 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 automati-
cally restart after completion of the last batch.
Common Open Collector & Relay (Alarm)
Specifications
High or Low
Alarm
User programmable for high or low alarm
Alarm Deadband
0-100% FS, user programmable
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
Red backlight, Flashing display, Alarm sym-
bol (!); (symbols not available on bargraph
models); Bargraph segment flashes on alarm.
Alarm Message
On or Off; User programmable, 8 characters
maximum; Displayed every 10 sec for 1 sec
on bottom
Alarm
Acknowledge
Front panel ACK button or external digital in-
put 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 Output
Rating
Two NPN, Isolated open collector,
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)
Alarm Output
Source
Assign to Rate, Total, Grand Total or Digital
Input
