Loop Leader PD6620 Series Loop-Powered Flow Rate/Totalizers
Instruction Manual
42
Troubleshooting Tips
Certain sequences of events can cause unexpected results. To solve these issues, it is best to start fresh from factory defaults and
use the manual as a step by step programming guide, rather than a random approach to programming. See
for details on resetting the meter to factory defaults. In addition, for best results, we recommend using the free
software for all programming needs.
Symptom
Check/Action
No display at all
1. Check that the 4-20 mA current loop is providing at least 3.5 mA to the meter.
2. Check that the voltage drop of all devices connected to the 4-20 mA current loop
does not exceed the max rating of the loop power supply.
Not able to change setup or
programming,
LOCKED
is
displayed
Meter is password-protected, enter correct five-digit password to unlock.
Meter display flashes:
1.
99999
2.
-9999
Check that the number of digits required for the scaled value does not exceed the
maximum digits for the display line. If it does, try adjusting the decimal point location for
less precision or changing the rate display to the bottom line.
Display is unstable
Check:
1. Input signal stability and value.
2. Display scaling vs. input signal.
3. Filter and bypass values (increase).
Display response is too slow
Check filter and bypass values
Display reading is not accurate
Check:
1. Input signal conditioner selected: Linear, square root, etc.
2. Scaling or calibration
Display does not respond to input
changes, reading a fixed number
Check display assignment. It might be displaying max, min, or set point.
Display shows:
MAX
,
MIN
,
RATE
,
TOTAL
, or
GTOT
and a number
Max or min display has been locked. Press
Enter
to unlock max/min display readings.
Relay operation is reversed
Check fail-safe settings in
Output
menu
Relays do not respond to signal
Check:
1. Relay action in
Output
menu
2. Set and reset points
3. Check manual control menu
If the display locks up or the meter
does not respond at all
Cycle the power to reboot the microprocessor.
Other symptoms not described
above
Call Technical Support for assistance.
