S&P CADB/T-HE ECOWATT 04 Manual De Instrucciones página 54

40 and 54 models:
These models are equipped with two frequency converters (one per fan), throw these it is pos-
sible to regulate the fan speed depending on the CO2 concentration mesured by the CO2 sensor
(accessory).
Follow the next points to adjust the frequency converter parameters:
Inverter reconfi guration
Frequency converters are pre-programmed to be used via proportional control with a built-in
potentiometer (FR2 with jumper between 24V and LI3) or via PI control with a 0-10V voltage
input (FR1 with jumper between 24V and LI1).
For other uses, some of the parameters confi gured in the frequency converter must be re-
programmed. To do so, use the following inverter commands:
Step 1. Unlock the inverter
To unlock the inverter, enter the password. The sequence is as follows:
- Press ESC until "rdy" appears on the screen.
- Press ENTER and rotate the wheel anti-clockwise until "SUP-" appears on the screen.
- Press ENTER and rotate the wheel clockwise until "COd-" appears on the screen.
- Press ENTER and rotate the wheel clockwise until "1951-" appears on the screen.
- The entered code fl ashes. At this time the inverter is unprotected.
Step 2. Enter programming mode
The inverter has 2 operating MODES, RUN and PROGRAMMING. To switch from one to the
other keep
ESC pressed for two seconds.
Location of the 3 Mode Leds.
Depending on how they are lit up, they indicate the
selected mode:
- IN SEQUENCE Ò RUN MODE
- SIMULTANEOUSLY Ò PROGRAMMING MODE
- Keep ESC pressed down for 2 seconds until the 3 mode leds light up simultaneously. At that
moment they are in Programming Mode.
Enter the parameters depending on the required use.
54