Danfoss VLT HVAC Drive - 4.1.18. How to Test Motor and Direction of Rotation.

4.1.18. How to Test Motor and Direction of Rotation.
Note that unintended motor start can occur; make sure no personnel or equipment
is in danger!
Please follow these steps to test the motor connection and direction of rotation. Start with no
power to the unit.
Illustration 4.19:
Step 1: First, remove the insulation on both ends
of a 1.97-2.76 in. [50 to 70 mm] piece of wire.
Illustration 4.20:
Step 2: Insert one end in terminal 27 using a
suitable terminal screwdriver. (Note: For units
with the Safe Stop function, the existing jumper
between terminal 12 and 37 should not be re-
moved for the unit to be able to run!)
Illustration 4.21:
Step 3: Insert the other end in terminal 12 or 13.
(Note: For units with the Safe Stop function, the
existing jumper between terminal 12 and 37
should not be removed for the unit to be able to
run!)
4. Electrical installation VLT
®
HVAC Drive Instruction Manual
42 MG.11.A4.22 - VLT
®
is a registered Danfoss trademark
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