G2 Pulse Lubrication Controller

G2 Pulse Lubrication Controller

The G2 Pulse Lubrication Controller is specifically designed for use on systems incorporating a pump as well as a solenoid valve and Pressure switch. The unit can be programmed for Pause cycles from 1 second to 50 hours, maximum pump cycle times of 1 to 50 minutes and solenoid valve cycle times of 1 to 50 seconds.

The systems can run from 10 to 30 Volt DC making it suitable for 12 or 24 Volt systems. Low level monitoring is also available as well as an additional output to drive a fault lamp if required.

Setup Mode

To enter Setup Mode apply power while holding the button down for 2 seconds. The fault led will illuminate to indicate that the unit is in setup mode.

The first parameter is the Pause Time. This can be from 1 second to 50 hours. The range leds will indicate the range of the current setting. To determine the exact setting turn the dial until the range led starts to blink, this indicates that the dial and range leds are pointing to the current setting. To select a different setting turn the dial until the range leds and the dial indicate the desired setting, press and hold the button for 2 seconds. The range led will now start to blink indicating the new setting has been accepted. This step can be repeated if necessary.

To move to the next parameter simply press the button briefly. Note that the position of the dial is not significant when simply moving to the next parameter.

The next parameter is the Solenoid Cycle Time. This is the time in seconds of the solenoid’s on and off cycles (e.g. if this is set to 1.5 seconds the solenoid will switch at rate of 1.5 seconds on and 1.5 seconds off). This setting can be from 1 second to 50 seconds and can be changed as with the Pause time.

To move to the next parameter again press the button briefly.

The last parameter is the Pressure Timeout. This is the maximum time the system can take to build up pressure. If the pressure switch does not close with this time, thw nunit will assume there is a fault and go into fault mode. Valid range for this setting is from 1 minutes to 50 minutes. Change as per Pause time. This value must bee suitably longer than the maximum possible pressurizing time of the system to ensure no false alarms.

To move pass this parameter press the button briefly.

The last stage of setup mode is a Test Mode. This is indicated by the Fault led flashing. The level and pressure leds will indicate if the level of pressure switch are closed. Holding the button down will drive the solenoid and pump, CAUTION, note that this will continue for as long as the button is pressed, regardless of whether the pressure switch is closed or not.

To exit Setup Mode remove power.

Operating mode

Run

During a Run cycle the pump is on continuously while the solenoid cycles at the rate specified in setup. The dial and range leds can be used to determine how much time has elapsed. Once the pressure switch contact closes the unit will enter a pause cycle. If however, the pressure switch contact has not closed before the pressure time expires, the unit will enter a Fault mode. Pressing the button at any point will terminate the run cycle and indicate a pause cycle.

Pause

During a Pause cycle the pump and solenoid are off and the units counts down to zero starting from from the pause Time specified in setup. The dial and range leds can be used to determine how much pause time remains. Once the time count to zero the unit will attempt to start a new Run cycle. The pressure contact is still closed, however, the unit will enter a fault mode instead. Pressing the button will terminate the Pause cycle and start a Run cycle only if the pressure switch contact open. If the pressure switch contact is still closed pressing the  button will be no effect. The pressure led will remain lit so long as the pressure switch contact is closed.

Fault

There are three possible Fault condition

1. Reservoir low level indicated by the level led being on. This occurs if the level switch contact is closed at any point during a run cycle after the initial four seconds have elapsed.
2. Cycle timeout indicated by the pressure led being on. This occurs if the pressure switch contact does not close within th eperiod specified by the pressure timeout in setup.
3. Pressure fault indicated by the pressure led blinking. This occurs if the pressure switch contact has not opened before the end of a  Pause cycle.

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