Loop Leader PD6620 Series Loop-Powered Rate/Totalizer Instruction Manual
38
4-20 mA Output (
4-20 mA
)
The
4-20 mA
menu is used to scale the 4-20 mA output 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 input. 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
underrange (<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 analog output value for this display value. This
will provide 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 Control (
CONTROL
)
The
Control
menu is used to control the open collector outputs, 4-20 mA analog output, or the relays
manually, ignoring the input. Each open collector, relay, and analog output can be programmed inde-
pendently for manual control. Selecting automatic control sets all relays and analog output for automatic
operation.
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
