Parameters
Page 35
August 2019
DPP-UM-00256-EN-03
Module Configuration Parameters
When
YES
is selected at CFG MOD1 or CFG MOD2, these MOD TYPE parameters become available:
• NONE
• 4…20 mA
• RATE
• RELAY
Once the module is configured, the menu moves to the PASSWORD parameter
MOD TYPE
Function
Options
Description
NONE
No module is
installed
NONE
Select NONE (no module installed) to move to the PASSWORD parameter
4-20MA
4…20 mA type
module
FLOW 4MA
Enter the flow rate that corresponds to 4 mA The units are equal to the units set in RATE UNT
FLOW 20MA
Enter the flow rate that corresponds to 20 mA The units are equal to the units set in RATE UNT
4-20 CAL?
Select NO to move to the PASSWORD parameter
Select YES to adjust the “zero” and span of the 4…20 mA output
4MA OUT
To adjust either the 4 mA or 20 mA output, connect a milliammeter or reliable
reference to the output
1 Disconnect one side of the current loop and connect the milliammeter
in series (disconnect either wire at the terminals l/– on the ISO-
MOD 4…20 mA module)
2 Using the arrow keys, increase the numerical value to increase the
current in the loop to the output Decrease the value to decrease the
current in the loop to output The value range for 4MA OUT is 40…80
counts The value range for 20MA OUT is 3700…3900 counts
3 Re-connect the 4…20 mA output circuitry as required
20MA OUT
4-20TEST
Outputs a simulated value from the 4…20 mA output By incrementing this
value, the 4…20 mA output transmits the indicated current value
RATE
Rate pulse output
module
FLOW 0Hz
Enter the flow rate that corresponds to 0 Hz The units are equal to the units set in RATE UNT
FL MAXHZ
Enter the flow rate that corresponds to 2500 Hz The units are equal to the units set in RATE UNT
RATE TST
Simulate a pulse output Moves to RATE PCT entry
RATE PCT
Allows a simulated value to be output from the rate pulse output By incrementing this value,
the rate pulse output transmits the indicated frequency in terms of percentage of the maximum
output frequency
For example, if the maximum output frequency is 2500 Hz, increment the displayed value to 50 to
output a test frequency of 1250 Hz
RELAY
Relay 1 and Relay
2 configuration
NONE
Select NONE (no Relay 1 installed) to move to the Relay 2 parameter
TOTAL
TOTAL mode configures the relay to output a 50 m/s pulse (contact changeover) each time the
display totalizer increments Select TOTAL to configure the relay for Totalizer Relay and move to
the PASSWORD menu
FLOW
Flow Rate Relay configuration permits relay changeover at two separate flow rates allowing
operation with an adjustable switch deadband
illustrates how the setting
of the two set points influences Rate Alarm operation
A single-point flow rate alarm would place the ON> setting slightly higher than the OFF<
setting—allowing a switch deadband to be established If a deadband is not established, switch
chatter (rapid switching) may result if the flow rate is very close to the switch point
ERRORS
When a relay is set to ERROR mode, the relay activates when any error occurs in the flow meter
that has caused the meter to stop measuring reliably See
“Startup and Troubleshooting” on
for a list of potential errors
