Danfoss VLT HVAC Drive Instruction Manual page 28

1. Verify that P 3‐15 is set up as [1] Analog Input 53 for the default reference source.
2. Scale Analog Input 53 to the following values. This is achieved using P 6‐10 thru P 6‐15.
Parameter
P 6‐10
P 6‐11
P 6‐14
P 6‐15
Note: These are default settings after changing P 0‐03 to [1] North America
3. Press the Status button, then press the Auto On button.
4. With all switches off, the display status words read Auto Remote Coast.
5. Refer to the following diagram for the currently programmed functions of the Digital Input
switches.
6. Turn ON switch DIN3/27, the display status words read Auto Remote Standby.
7. Turn ON switch DIN1/18 to start the drive. The drive runs at 15 Hz with Analog Input 53
potentiometer turned all the way to the left, and the RED LED (RO2/5) on the switch box is
lit when the drive is running.
setting of P 4‐12.
8. Turn Analog Input 53 potentiometer all the way to the right. The drive runs at 60 Hz and
the analog meter ramps to full deflection. The analog meter uses terminal 42 and is
programmed via P 6‐50 as [137] Speed 4‐20mA by default (4 mA=low speed limit,
20 mA=high speed limit).
9. What happens when you switch DIN1/18 to OFF? What does the analog meter do?
10. What happens when you switch DIN3/27 to OFF instead? What does the analog meter do?
11. Can you make the drive show an alarm to test Relay 1? (Hint: See terminal 27 in P 5‐12)
12. Go to P 0‐50 and select [1] All to LCP. Verify that the upload worked.
Verifying Operation
Value
0.07 V Terminal 53 Low Voltage
10.00 V Terminal 53 High Voltage
0 Hz Terminal 53 Low Ref./Feedb. Value
60 Hz Terminal 53 High Ref./Feedb. Value
Start
Jog
The reason that the drive does not go to 0 Hz is because of the
Description
No Coast
Operation Inverse
No No
Operation Operation
27