Pulsafeeder Pulsar DLCM - Manual (Page 36)

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14. Pressing [ENTER] on the last position will cause the {CONFIRM CHANGE? / YES} screen to be
displayed. Press [ENTER] to accept. Your 1-point calibration is now complete.
Refer to Section7 – General Operation: Calibration, Pump Flow for more detailed instructions on
how to perform DLCM calibration.
6.1.9 Analog Input Calibration.
If you are not using the 0-20mA input to the DLCM for control, skip this section. To calibrate the
Input Current you must first correctly wire an external signal source. Refer to Section 5 – Installation:
Low Voltage Input Connections, Analog Input. To perform a calibration, the signal generating device
(e.g., PLC) must be powered up and capable of altering its output from minimum to maximum signal.
6.1.9.1 One – Signal Analog Input Calibration
™
The following is a minimal procedure for calibrating the Analog Input if the 1 – Signal option is to be
used.
1. Press [CAL]. The {CALIBRATE / PUMP FLOW} screen is displayed.
2. Press [UP]. The {CALIBRATE / ANALOG IN} screen is displayed.
3. Press [ENTER]. The {0% = 4.0mA / 100% = 20.0mA} screen is displayed. These values represent the
previous calibration.
4. Press [ENTER]. The {INPUT ANALOG MIN / 0% = XXmA} screen is displayed. Adjust your PLC
to output a minimum signal (i.e., 4.0mA). The DLCM display will update as the incoming signal
changes.
5. When the displayed value stabilizes, press [ENTER] to accept it. The {INPUT ANALOG MAX /
100% = XXmA} screen is displayed. Adjust your PLC to output a maximum signal (i.e., 20.0mA).
Again, the DLCM display will update with the changing signal.
6. When the displayed value stabilizes, press [ENTER] to accept it. The {INPUT RATIO / 100% =
XX.XmA} screen is displayed.
7. Press [ENTER] to accept the 100% Ratio setting. The {CONFIRM CHANGE? / YES} screen is
displayed.
8. Press [ENTER]. Analog input calibration is now complete.
Refer to Section 7-General Operation: Analog Input Signal Calibration for more detailed instructions
on how to perform Analog Input calibration.
6.1.9.2 Two – Signal Analog Input Calibration
To calibrate a 2 Signal Analog Input, the DLCM factory default must first have been changed from
{STROKE & SPEED / 1-SIGNAL} to {STROKE & SPEED / 2-SIGNALS}. Refer to Section 7 –
General Operation: {–MENU– / Analog Mode} for information on configuring the Analog Mode.
™
The following is a minimal procedure for calibrating the Analog Input if the 2 – Signals option is to
be used.
1. Press [CAL]. The {CALIBRATE / PUMP FLOW} screen is displayed.
2. Press [UP]. The {CALIBRATE / ANALOG IN} screen is displayed.
3. Press [ENTER]. The {CALIBRATE / STROKE POSITION} screen is displayed.
4. Press [ENTER]. The {0% = 4.0mA / 100% = 20.0mA} screen is displayed. These values represent the
previous calibration.
5. Press [ENTER]. The {INPUT ANALOG MIN / 0% = XXmA} screen is displayed. Adjust your PLC
to output a minimum signal (i.e., 4.0mA). The DLCM display will update as the incoming signal
changes.