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OPERATION
6.1 Commissioning the Unit
It is always advisable to check the operating status of the drive and its load before commencing regular
operation.
Initial Operation
Verify the following:
1. The unit is securely attached to the proper mounting surface
2. The unit’s input terminals are connected to an appropriate power source
3. An appropriately rated motor is connected to the output terminals
4. The motor is secured and properly mounted
Perfect Pressure™ Setup
Upon the first initialization of the unit (or after restoring factory defaults of all parameters using the Two
Button Reset Procedure, page 36) the drive will prompt the user to select or decline a quick setup for
constant pressure.
The display will read SETUP CONST PRES YES (ENTER) / NO (HOME).
Press the ENTER key to set up Perfect Pressure™ or the HOME key to decline.
Basic parameters for analog constant pressure can be set without navigating through the complete
menu options. Refer to Section 7.2, Perfect Pressure™ Setup – Analog Constant Pressure, for the
information required to complete the setup, and have this information ready to enter when
commissioning the unit.
6.2 Ground Fault Detection
SD & 2XD Series drives are equipped with a feature to detect a fault between any of the output lines
and earth. See Table 14, Operating Parameters, GND FAULT DETECT, for more information on using
this parameter. If a ground fault is strong enough to trigger the parameter GND FAULT DETECT, the
drive will not allow the IGBTs to switch. However, this does not protect the drive from damage in all
situations. If a ground fault occurs, immediately disconnect the input power! Long motor leads
can cause nuisance indications of a ground fault. If a megger does not indicate a ground fault, the
sensitivity of the ground fault detection may need to be reduced by reducing the value of parameter
GND FAULT DETECT.
CAUTION: Before the motor is connected to the output terminals, check all output lines for line-to-
ground faults using a megger. There is a direct path through the drive circuitry for ground fault currents
that can be triggered when power is applied to the input terminals, even though the output switches are
not activated. These currents can cause serious damage to drive circuitry and are not covered under
warranty.
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