SNO GUNTM POWER SUPPLY/TIMER II
OPERATING INSTRUCTIONS
SNO GUNTM POWER SUPPLY/TIMER II
OPERATING INSTRUCTIONS
Overview:
The SNO GUNtm Power Supply/Timer (SG-PST-II) will supply timing pulses to the SG-PN as programmed by the operator. The circuit is programmed to operate in five "Run" modes: One-Shot, Repeat Cycle, Counted Repeat Cycle, Toggle, and Direct. Two "Purge" modes, Timed or Continuous, are also available. The SG-PST-II is programmed using the display on the front panel. "On" and "Off" times may be independently chosen from 0.01sec to 99.99 seconds each. The footswitch and "Trigger" switch serve the same purpose.
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Description of Modes:
Run Modes:
One-Shot
After the footswitch or "Trigger" switch is depressed, the output will be enabled for the amount of time determined by the time set in the "On-Time" variable. The green "Timed On" light will be illuminated when the output is enabled. The footswitch must be released before another cycle can be triggered.
Repeat Cycle
After the footswitch or "Trigger" switch is depressed, the output will be enabled for the amount of time determined by the time set in the "On-Time" variable. The green "Timed On" light will be illuminated when the output is enabled. The output will then be switched off for the amount of time set in the "Off-Time" variable. The red "Timed Off" light will be illuminated when the output is off. After the "Off Time" has been completed, the cycle will continue to be repeated. The cycle is terminated by another press of the footswitch or the "Trigger" switch.
Counted Repeat Cycle
After the footswitch or "Trigger" switch is depressed, the output will be enabled for the amount of time determined by the time set in the "On-Time" variable. The green "Timed On" light will be illuminated when the output is enabled. The output will then be switched off for the amount of time set in the "Off-Time" variable. The red "Timed Off" light will be illuminated when the output is off. After the "Off Time" has been completed, the cycle will continue to be repeated until the number of "on" cycles equals the quantity in the "# cycles" variable. The cycle may also be terminated by another press of the footswitch or the "Trigger" switch.
Toggle
After the footswitch has been depressed, the output will be on even when the footswitch is released. The output will remain on until the footswitch is pressed again. The green "Timed On" light will be illuminated during the cycle.
Direct
The output of the SG-PST-II will be directly tied to the footswitch. When the footswitch is pressed, the output will be on. The output will remain on until the footswitch is released. The green "Timed On" light will be illuminated during the cycle
Purge Modes:
The purge mode is entered by pressing the footswitch twice in rapid succession (1/2 second). This mode may also be entered by pressing the switch marked "Purge" on the front panel. The amber light marked "Purge" will be illuminated whenever the purge mode is entered.
Timed Purge Mode
In this mode, the purge will continue for the amount of time set in the Purge Time Variable. This timed mode may be interrupted by pressing the footswitch during the purge.
Continuous Purge Mode
In this mode, the purge will continue until the footswitch is released.
Programming:
To enter the program mode:
Press the button in the upper left corner of the keypad marked (CHG PRE).
The Change Preset mode will be entered and the variables may be scrolled through by pressing the (+) and (-) buttons.
When the variable that is to be changed is selected, press the Enter (ENT) key in the lower right corner of the keypad.
The Enter key toggles the cursor between the variable name and the variable value.
When the variable value is selected, use the "Cursor Right"(è) and "Cursor Left"(ç) keys to move the cursor among the 4 digit positions. Use the (+) and (-) keys to change the mode, enter a time or the number of cycles. Press (ENT) to continue editing.
When editing is complete, press (MSG) to return to the Main Message Display.
The SG-PST-II represents time in 10ms increments, a value of 10 represents a 100ms pulse, a value of 100 represents a 1-second pulse, etc. Each digit of the number can be changed individually or the entire number may be incremented by accessing the right-most digit. The range of value change is from 0000 to 9999. Incrementing (+) past 9 or decrementing (-) past 0 carries to or borrows from the digit(s) to the left of the cursor position.
Note: Pressing the arrow keys (ç) (è) when selecting variables will select the counter and timer preset functions. These functions are disabled, timers and counters must be set in the Change Preset Mode. If the timer and counter preset functions are entered, continue to press the arrow key until the Change Preset Mode is re-entered.
677 ANITA STREET, SUITE A, CHULA
VISTA, CALIFORNIA 91911
phone: 619/423-4555 toll free 800/379-4231 fax:
619/423-4604
Copyright 1998, Va-Tran Systems
Incorporated.