10
PWM Mode.
Pulse-width modulation (PWM) of a signal or power source involves the modulation of its duty cycle, to either convey
information over a communications channel or control the amount of power sent to a load.
This mode works over a settable (0 to 100 seconds) time to switch on or off selected output.
Time resolution is 5 seconds, 5 steps. During this time if reading value will move towards a set value (on or off) the PWM
will operate the output on timered basis. Reaching the set value the PWM will permanently leave on or off the output.
Parameters to set for this mode are:
Unit Value + %: (time activity towards set value. 0% means 0 seconds. 100% means 100 seconds.)
IN: assign “input” number then edit the name by moving wheel. If the “input” number is already used then it will not be
shown. Choose “X” instead of a number to disable input.
RL: assign “relay” number then edit the name by moving wheel. If the “relay” number is already used then it will not be
shown. Choose “X” instead of a number to disable relay.
STOP: (“ON”: when product into tank is ending, then the related output will be off and an alarm condition will pop-up.
“OFF”: when product into tank is ending, then the related output will continue to stay on and an alarm condition will pop-up.)
MSG: when agged an SMS or EMAIL alarm message will be sent to destination edited in GSM menu.
For example: set rst pH value at 10.00 = 100% and second pH value at 5.0 = 0%.
For reading values ≥ to 10.00 the output will be permanently ON.
For reading values ≤ 5.0 the output will be permanently OFF.
For reading value of 9.50 the output will be OFF for 10 seconds, ON for 90 seconds.
If reading value decreases to 8.00 then the output will be OFF for 20 seconds, ON for 80 seconds.
Notes: for values within 1% and 5% MAX5 will assume 5% as usable value.
for values within 95% and 99% MAX5 will assume 95% as usable value.
g. 5
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