Pulsafeeder MPC Vector - Manual (Page 30)

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8.2 Analog Input Calibration
If you are not using the 4-20mA input to the MPC VECTOR 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. As with the flow calibration routine, the Analog Input may be
calibrated WET or DRY. To perform a WET calibration, the signal-generating device must be active and
capable of generating the full range (low to high) of potential input signals. A DRY calibration requires no
input signal.
If the MPC VECTOR is configured for Speed Control instead of Flow Control the displays below reflecting
pump flow will be replaced with pump speed displays. For example the bottom line of step 8 of the WET
Calibration routine will display ‘SPEED XXXX RPM’.
8.2.1 “WET” Analog Input Calibration (with a field signal)
1. The starting display will be:
S E T P T X X . X X X
F L O W X X . X X X
2. Press the MENU key
- M E N U -
C A L I B R A T I O N
3. Press the ENTER key
C A L I B R A T I O N
P U M P F L O W
4. Press the UP arrow key twice, to access the analog input calibration
C A L I B R A T I O N
A N A L O G I N P U T
5. Press the ENTER key
A N A L O G I N P U T
W E T C A L
6. Press the ENTER key
A P P L Y M I N M A
E N T E R T O S T A R T
7. Apply your desired minimum mA control signal to the MPC VECTOR (usually 4 mA)
8. Press the ENTER key
M I N S E T P T 4 . 2 M A
F L O W 0 . 0 0 G P M
(The mA value will be equal to your input signal level)
(The lower line shows the setting the MPC VECTOR will use for this signal value)
9. Press the UP and DOWN arrow keys to change the Speed/Flow corresponding to the Analog Input Value.