PD6600 Series Loop-Powered Process Meters
Instruction Manual
37
Stopwatch (
STPWATCH
)
The stopwatch function may be used to manually run
and control a process for a specific time interval up to
99 hrs., 59 min, and 59 seconds. The stopwatch func-
tion may be assigned to any relay. There are three
settings needed to use the function effectively.
1. Assign stopwatch to either top or bottom dis-
play line
2. Assign the relay to control the process
(on/off)
3. Assign a function key or digital input to
start/stop the stopwatch
Application Example
To maintain consistency of a product, it is necessary
to take and test samples at different times throughout
the day. The stopwatch function is used to open and
close a solenoid valve to know the exact amount of
time needed to complete the desired sample. Once
this is determined, the timer function can be used to
automatically take a sample (batch) based on the time
determined using the stopwatch function.
Setup:
Assign the following to
Stopwatch Function
•
Bottom display line
(see pages 28 & 30 for details how to
change the display)
•
Relay 1
(see pages 31 & 34 how to change Open Col-
lector and or Solid State Relay functionality)
•
F3: Start/Stop
(see pages 42 & 43 for details on how to
change the function keys)
Procedure
•
Press F3 to start the stopwatch; relay 1 turns
on and the process starts running.
•
Press F3 to stop the stopwatch; relay 1 turns
off and the process stops.
•
The bottom display indicates the time it took
to complete the sample.
Runtime & Cycle Count (
INFO
)
The relay information menu shows runtime and cycle
count for each relay. These values may be cleared at
any time by selecting the
Clear
option (
CLEAR?
).
Isolated 4-20 mA Output (
4-20 mA
)
The
4-20 mA
menu is used to scale the isolated 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 can be scaled to provide
a 4-20 mA signal for any PV 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.
Process Variable (
PV
)
To scale the analog output, enter display value 1 and
a corresponding analog output value for this display,
and enter display value 2 and a corresponding analog
output value for this display value. This will provide a
scaled linear 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, and 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 value.
INFO
RELAY 1
RELAY
RUNTIME
Flashes
Momentarily
TIME
195.0 H
CYCLE
COUNT
CYCLE
51
RLY 1
CLEAR?
Flashes Momentarily
SETUP
OUTPUT
OPEN
COLLECTR
OUT
RELAY
OUT
4-20 mA
4-20
PV
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
OUT
CONTROL
CTRL
OC 1
CTRL
AUTO
CTRL
MANUAL
CTRL
ON
CTRL
OFF
