Danfoss VLT HVAC Operating Instructions Manual page 38

4. Electrical installation
1.
See section entitled
Armoured Control Cables
mination of control cables.
4
4.1.20. Switches S201, S202, and S801
Switches S201 (Al53) and S202 (Al54) are
used to select a current (0-20 mA) or a voltage
(0 to 10 V) configuration of the analog input
terminals 53 and 54 respectively.
Switch S801 (BUS TER.) can be used to enable
termination on the RS-485 port (terminals 68
and 69).
Please note that the switches may be covered
by an option, if fitted.
Default setting:
4.2. Final optimization and test
4.2.1. Final optimization and test
To optimize motor shaft performance and optimize the frequency converter for the connected
motor and installation, please follow these steps. Ensure that frequency converterfrequency con-
verter and motor are connected, and power is applied to frequency converter.
Step 1. Locate motor name plate..
38
Use a clamp from the accessory bag
to connect screen to frequency con-
verter decoupling plate for control
cables.
Earthing of Screened/
for the correct ter-
S201 (A53) = OFF (voltage input)
S202 (A54) = OFF (voltage input)
S801 (Bus termination) = OFF
NB!
Before power up ensure that connected equipment is ready for use.
NB!
The motor is either star- (Y) or delta- connected (Δ). This information is located on
the motor name plate data.
MG.11.A4.02 - 09.10.06. VLT
®
VLT HVAC Drive Operating Instructions
Illustration 4.29: Control cable clamp.
Illustration 4.30: Switches location.
® is a registered Danfoss trademark