Loop Leader PD6620 Series Loop-Powered Flow Rate/Totalizers
Instruction Manual
29
Isolated 4-20 mA Output (
4-20 mA
)
The
4-20 mA
menu is used to scale the 4-20 mA out-
put based on display values. This menu is not present
on models without a 4-20 mA output option.
The 4-20 mA analog output (if equipped) can be
scaled to provide a 4-20 mA signal for the rate or total
display range or to simply retransmit the 4-20 mA in-
put. The output may be disabled (
DISABLE
) and will
only output the minimum signal.
Overrange and underrange values determine what
mA signal the meter will output if the mA input is un-
derrange (<3.5 mA) or overrange (>20.5 mA). This
value may be set to 1 mA, 3.5 mA, 3.8 mA, 20.5 mA,
20.8 mA, 23 mA, or disabled.
No equipment is needed to scale the analog output;
simply program two display values and corresponding
mA output signals.
Rate or Total (
RATE
or
TOTAL
)
To scale the analog output, enter display value 1 and
a corresponding analog output value for this display,
then enter display value 2 and a corresponding ana-
log output value for this display value. This will pro-
vide a linearly scaled analog output.
Retransmit (
RETRANS
)
This option will retransmit the 4-20 mA analog input
without the need to scale the output.
Output Manual Control (
CONTROL
)
The
Control
menu is used to control the open collec-
tor outputs, 4-20 mA analog output, or the relays
manually, ignoring the input. Each open collector, re-
lay, and analog output can be programmed inde-
pendently for manual control. Selecting automatic
control sets all relays and analog output for automatic
operation.
After selecting manual control for a specific output,
you can set the output value. To change the output
value, return to the Control menu, select the output to
control, select manual control, and enter a new input.
SETUP
OUTPUT
OPEN
COLLECTR
OUT
RELAY
OUT
4-20 mA
4-20
RETRANS
4-20
DISABLE
DSP 1
+00,000.00
DSP 1
GAL
Flashes
Units
OUT 1
04.000
DSP 2
+00,100.00
OUT 2
20.000
AOUT
UNDER
U-RNG
DISABLE
AOUT
OVER
O-RNG
DISABLE
AOUT
SCALE
4-20
RATE
4-20
TOTAL
OUT
CONTROL
CTRL
OC 1
CTRL
AUTO
CTRL
MANUAL
CTRL
ON
CTRL
OFF
