Comparator Function; Detailed Description Of The Comparator Mode; Setting The Upper And Lower Limit Value - AND AD-4530 Instruction Manual

Digital indicator

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12. COMPARATOR FUNCTION

The comparator function compares the measured value against the set values, and the

results are displayed by the LEDs. If the relay option is installed, it outputs the

comparison results (HI, OK or LO) from the rear panel relay output terminals.

The relation between the comparison outputs and the upper and lower limit setting

values is as shown below:

Comparison result

* HI is output with a positive over limit, LO is output with a negative over limit.

Upper limit and lower limit values can be negative.

For example, if the upper limit value is -1000 and the lower limit value is -2000, HI is

output for the measured value of -500 and LO is output for the measured value of -2500.

Make sure that the upper limit value is greater than the lower limit value.

Set the upper limit value (f101) and lower limit value (f102) of the function using the

following procedure. In the measurement mode, press the

the setting mode for the upper or lower limit value.

In the setting mode for the upper or lower limit value, the AD-4530 blinks the

LED. (The relay output is not affected.)

The setting value is displayed. Set the value by operating the key.

Shift the blinking digit to the value to be changed.

Change the value of the blinking digit.

Change the polarity.

Store the setting, and return to the measurement mode.

Cancel the setting, and return to the measurement mode.

Comparison condition

Upper limit < Measured value

Lower limit  Measured value  Upper limit

Measured value < Lower limit

key to enter

Measurement mode

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