S&P VFTM Series, Manual

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ENGLISH
2. GENERAL INFORMATION
2.1 Cable for connection to the electrical supply
The cable for connection between the frequency inverter and the fan terminal box must be shielded, with a
recommended maximum length of 50m.
IMPORTANT : The metal mesh of the shielded cable must be earthed in the fan terminal box .
If the fan is installed with a cable and an external terminal box, and the motor has its own terminal box
connect the inverter shielded cable directly to the motor terminal box, removing the cable and the remote
terminal box
.
2.2 Inverter reconfiguration
Frequency inverters 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 configured in the frequency inverter 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 flashes. 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.
- 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.
Location of the 3 Mode Leds.
Depending on how they are lit up, they indicate the
selected mode:
- IN SEQUENCE Æ RUN MODE
- SIMULTANEOUSLY Æ PROGRAMMING MODE