Dynisco ATC770-0-2-3 - Page 28

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NOTE: A dry contact switch or relay must be fitted between terminal 62 (Common) and terminal 63
(Digital Input 1 Remote AUTO/MAN (DIG1)) to enable the use of Digital Input 2 (DIG2) and
3 (DIG3) (Control output value increase and decrease).
To verify this parameter or to change it, press the FUNC key until the lower display shows A/M .
Press the ▼ or ▲ key until the upper display shows the correct value ( LoCAL or CnCt ). Press the
FUNC key to set the value and move to the next parameter, or press the A/M key to go back to the
active display.
5.3.5 SETTING PEAK DETECTION
The Peak Detection can be either set to OFF, the default value of HIGH, or to LOW. To verify or
change this parameter, press the FUNC key until nonE and GROUP show on the display. Press the
▲ key until 4 shows in the upper display. Press the FUNC key until the lower display shows PEAK .
Press the ▼ or ▲ key until the display shows the correct value ( OFF , HI , or LO ). Press the FUNC key
to set the value and move to the next parameter, or press the A/M key to go back to the active
display.
5.3.6 SETTING THE LINE FREQUENCY
The Line Frequency default value is 50 Hz. To verify this parameter or to change to 60 Hz, press the
FUNC key until nonE and GROUP show on the display. Press the ▲ key until 4 shows in the upper
display. Press the FUNC key until the lower display shows LINE.F . Press the ▼ or ▲ key until the
upper display shows the correct frequency. Press the FUNC key to set the value. Press the FUNC
key to set the value and move to the next parameter, or press the A/M key to go back to the active
display.
5.3.7 SETTING THE DISPLAY FILTER
Filtering is an electrical method of averaging the displayed values over a period of time to arrive at a
more legible display. Filtering helps to eliminate short duration transients and spikes that may cause
false or spurious readings.
To change or view the Display and Controller input Filter, press the FUNC key until nonE and
GROUP show on the display. Press the ▲ key until 2 shows in the upper display. Press the FUNC
key until the lower display changes to AT.FL . Using the ▼ or ▲ keys, select the amount of filtering
desired, from none (OFF) to five seconds. When finished, press the FUNC key to lock in the value
and advance to the next parameter, or press the A/M key to go back to the active display.
5.4 SETTING THE REMOTE SET POINT INPUT (OPTIONAL)
The Remote Set Point allows the user to control the setpoint from a remote voltage or current source
(0-10 VDC, 0-20 mA or 4-20 mA sources), and to select either the keyboard or the remote power
source as control device.