Gnd
11
g
5.3
Adjusting the maximum revolutions
Only applicable when using DSR-feedback.
Method
1. Open the lid of the ITM-iF housing.
2. Position the dipswitches (9 =Off, 10 =Off) and set the knob and the switch on the front to
A
.
3. Press the knob to start adjustment.
4. The vortex damper will open, the fan will run at high speed after 10 seconds. The red led (L1) is off. The green
led (L2) flashes, to indicate that adjustment has started. The fan will run at high speed for a maximum of 60
seconds.
5. Wait until the fan has come to a standstill.
6. Check whether adjustment has been successful:
- Green led on
:
Adjustment successful.
- Red led on
:
Adjustment unsuccessful. The most common cause is that the ITM-iF has
measured none or too few pulses. Check the DSR-feedback sensor and
repeat the adjustment procedure.
After adjustment set dipswitches 9 and 10 to ON.
5.4
Adjusting the control input
Not applicable when using the I/O-network.
Method 1% adjustment
1. Open the lid of the ITM-iF housing.
2. Position the dipswitches (9=Off, 10=On) and remove the jumpers TEMP.
3. Set the analog output of the controller to 1%. Check the voltage; this should be between 9 and 10V (with a
0-10V control this is between 0.1V and 1V).
4. Turn the knob on the front to its minimum position. The red led (L1) flashes: briefly on, longer period off. The
green led (L2) is off. This means that the 1% is to be adjusted.
5. Confirm the 1% adjustment by pressing the knob. The green led (L2) flashes.
6. The green led (L2) will go off after five seconds. The ITM-iF has completed the 1% adjustment.
