3.1.4 Switches S201, S202, and S801
Switches S201 (A53) and S202 (A54) are used to select a
current (0-20mA) or a voltage (-10 to 10V) 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).
See drawing
Diagram showing all electrical terminals
in
section
Electrical Installation.
Default setting:
S201 (A53) = OFF (voltage input)
S202 (A54) = OFF (voltage input)
S801 (Bus termination) = OFF
NOTE
When changing the function of S201, S202 or S801 be careful
not to use force for the switch over. It is recommended to
remove the LCP fixture (cradle) when operating the switches.
The switches must not be operated with power on the
frequency converter.
130B
T310.10
1
2
N O
VLT
BUS TER.
OFF-ON
A53 A54
U- I U- I
3.1.5 Cable Routing
The BACnet communication cable must be kept away from
motor and brake resistor cables to avoid coupling of high
frequency noise from one cable to the other. Normally a
distance of 200mm is sufficient, but maintaining the greatest
possible distance between cables is generally recommended,
especially where cables run in parallel over long distances.
When crossing is unavoidable, the BACnet cable must cross
motor and brake resistor cables at an angle of 90
°
.
Fieldbus cable
Brake resistor
Min.200mm
90° crossing
130BA080.10
How to Install
VLT
®
HVAC Drive Native BACnet Operating Instructions
MG.14.C1.02 - VLT
®
is a registered Danfoss trademark
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