Danfoss VLT User Manual

4.1.23 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.
Figure 4.37:
Step 1: First, remove the insulation on both ends of a 1.97–
2.76 in [50–70 mm] piece of wire.
Figure 4.38:
Step 2: Insert one end in terminal 27 using a suitable ter-
minal screwdriver. (Note: For units with the Safe Stop func-
tion, the existing jumper between terminal 12 and 37 should
not be removed for the unit to be able to run!)
Figure 4.39:
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!)
Figure 4.40:
Step 4: Power up the unit and press the [Off] button. In
this state, the motor should not rotate. Press [Off] to stop
the motor at any time. Note that the LED on the [OFF] but-
ton should be lit. If alarms or warnings are flashing, please
see chapter 7 for more information.
4 Electrical installation VLT
®
HVAC Drive Instruction Manual
4-24 MG.11.A9.22 - VLT
®
is a registered Danfoss trademark
4

Danfoss VLT Specifications

General

Frequency	50/60 Hz
Enclosure	IP20, IP21, IP55, IP66
Series	VLT
Control Technique	Flux Vector Control
Output Voltage	0-Vinput
Control Method	Fieldbus
Communication Interface	PROFIBUS, CANopen
Protection Features	Overload, Overvoltage, Undervoltage, Short Circuit, Ground Fault
Cooling Method	Liquid Cooled
Storage Temperature	-25°C to +70°C
Relative Humidity	5-95% non-condensing
Altitude	Up to 1000m (3280ft) without derating, up to 4000m (13120ft) with derating
Operating Temperature	-10°C to +50°C (14°F to 122°F)