S&P VAPZ Serie Manual De Instrucciones página 11

Emin and Emax settings:
• Factory settings: Emin = 7.2 mA; Emax = 14.4 mA
These settings are for connecting a CO2 sensor.
• Range of possible settings:
If signal voltage:
If signal current:
• To change the factory settings:
Example "Emin":
- Connect a voltmeter (DC voltage) between GND and Emin.
- Factory setting = 2.12V
- Using a fl at-headed screwdriver, rotate the trimmer marked " Emin " (e.g. until the vol-
tmeter indicates 2V).
- The value matches Emin/4 if analog input = current.
(Example = a reading of 2V means Emin = 2 x 4 = 8 mA; i.e. as long as the IN input is lower
than 8 mA the motor output is Smin)
- The reading is Emin/2 if input = voltage.
(Example = a reading of 2V means Emin = 2 x 2 = 4V; i.e. as long as the IN input is lower
than 4V the motor output is Smin).
For "Emax": proceed in the same way, connecting the voltmeter between GND and Emax
and adjusting the trimmer marked " Emax ".
(Example = a reading of 4V means Emax = 4 x 4 = 16 mA; i.e. as soon as input IN is higher
than 16 mA the motor output is Smax).
7. MOTOR OUTPUT: SMIN AND SMAX SETTINGS
Factory settings (+/- 20V) for 230V supply voltage: Smin = 110V; Smax = 230V.
• Range of possible settings:
90V ≤ Smin < regulator supply voltage.
Smin < Smax ≤ regulator supply voltage.
• To change the factory settings:
- Measure the motor output voltage.
- Motor output can be forced using switches S1.2 and S1.3:
Condition = front panel switch set to auto and max. speed input inactive
S1.2 S1.3
OFF OFF
ON OFF
OFF ON
ON ON
* Adjust Smax by turning the trimmer marked "Smax"
important: if the desired Smax setting = max. value permitted by the supply voltage (around 230V) set
the Smax trimmer to the point where the motor voltage begins to fall.
** Adjust Smin by turning the trimmer marked "Smin".
0V ≤ Emin < 10V DC
Emin < Emax ≤ 10V DC
0 mA ≤ Emin < 20 mA
Emin < Emax ≤ 20 mA
Output motor
Automatic (non-adjustable)
Smax forced*
Smin forced**
Automatic (non-adjustable)
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