Pulsafeeder Pulsar DLC - Manual (Page 53)

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4. The menu that selects the MODBUS Signal failure action is displayed. There are three available
options:
e) Freeze at last signal,
f) Motor off,
g) Go To Default
Press [UP] or [DOWN] to select the desired option.
MODBUS SIG. FAIL
FREEZE @LAST SIG Press
[UP] MODBUS SIG. FAIL
MOTOR OFF
Press
[UP] MODBUS SIG. FAIL
GO TO DEFAULT
Press [ENTER] to accept your setting.
5. If you selected {FREEZE @LAST SIG} or {MOTOR OFF} in step 4, proceed to step 6. If you
selected {GO TO DEFAULT}, you must set the default value.
Press [UP] or [DOWN] to set the default signal in percent.
SIGNAL DEFAULT
10.0%
Press [ENTER] to accept your setting.
6. The {ERROR MESSAGE} screen is displayed. Press [UP] or [DOWN] to select between
{ENABLED} or {DISABLED}
ERROR MESSAGE
ENABLED
Press
[UP] ERROR MESSAGE
DISABLED
Press [ENTER] to accept your setting.
When the DISABLED setting is selected, the error will still be logged with the date and time, but the
flashing error message on the screen will be suppressed. This option is for applications that
intentionally interrupt the MODBUS Signal in the normal course of operations, stopping and re-
starting the pump.
7.2.6 Leak Detection Failure Set Up
This sub-menu allows you to configure the DLC to interact with a PULSAlarm Leak Detection
Diaphragm. You can modify the way the DLC responds to a diaphragm rupture. The following
responses are available:
− Shut the motor off,
− Trigger an alarm relay,
− Shut the motor off and trigger an alarm relay,
− Have no interaction with the Pump Motor or Alarm Relay other than log the diaphragm failure
and display a message on the LCD display (this message is displayed until a key on the keypad is
pressed).
The leak sensor switch must be a dry contacting type. Refer to Section 5-Installation: Low Voltage
Inputs for wiring information.
If you select the 'motor off' option, the motor will have to be manually re-started if a Leak Detection
Failure is detected (i.e., press [MOTOR] to start the pump motor).