Start Up Procedure - Danfoss VLT FC Series Operating Instructions Manual

Start Up

4.1.2 Start Up Procedure

In the following procedures, changing the equipment
between drive mode and bypass mode is required.
Changing modes is different for the ECB and EMB. The ECB
uses pushbuttons on the LCP while the EMB uses switches
on the front of the panel. Be familiar with the operation of
these devices before start up.
WARNING
EQUIPMENT HAZARD!
OPTION PANELS CONTAIN DANGEROUS VOLTAGES WHEN
CONNECTED TO LINE VOLTAGE. INSTALLATION, START-UP
AND MAINTENANCE SHOULD BE PERFORMED ONLY BY
QUALIFIED PERSONNEL. FAILURE TO PERFORM INSTAL-
LATION, START-UP AND MAINTENANCE BY QUALIFIED
PERSONNEL ONLY COULD RESULT IN DEATH OR SERIOUS
INJURY.
1. Perform pre-start up procedure.
2. Ensure that all operator devices are in OFF
position. Main and drive disconnect switches on
front of electromechanical bypass panel must be
in OFF position. Panel door(s) closed.
3. Keep main disconnect switch in OFF position and
apply voltage to option panel. DO NOT operate
drive or bypass at this time.
4. Confirm input line voltage is balanced within 3%.
If not, correct input voltage imbalance before
proceeding. Repeat procedure after voltage
correction, if applicable.
NOTE
MOTOR START!
ENSURE THAT MOTOR, SYSTEM, AND ANY ATTACHED
EQUIPMENT IS READY FOR START. FAILURE TO ENSURE
MOTOR, SYSTEM, AND ANY ATTACHED EQUIPMENT IS
READY FOR START COULD RESULT IN PERSONAL INJURY
OR EQUIPMENT DAMAGE.
5. To apply power, turn main disconnect (and drive
disconnect, when applicable) to ON position. If a
bypass is connected, place bypass in drive mode.
6. Enter drive programming data per instructions in
drive specific operating instructions.
In steps 7 through 11, for a bypass with a contactor motor
selection (CMS) option, put the motor selector switch in
motor 1 position. Repeat the procedure for motor 2 with
the switch position in motor 2. For dual motor
applications, check both motors at same time.
Option Panel Operating Instructions
a. Put panel in drive mode.
b. Hand start drive at minimum speed (see drive specific
operating instructions for details).
c. Confirm directional rotation.
d. If incorrect, stop drive, remove power, and lock out.
e. Reverse connection of any 2 of 3 motor leads at
terminal. Do not change incoming power leads.
f. Remove lockout and apply power.
g. Confirm directional rotation.
a. Momentarily bump motor in bypass.
b. Confirm directional rotation.
c. If incorrect, stop drive, remove power, and lock out.
d. Reverse connection of any 2 of 3 input power leads at
terminal. Do not change motor leads
f. Confirm directional rotation.
FULL SPEED OPERATION!
ENSURE THAT THE MOTOR, SYSTEM, AND ANY ATTACHED
EQUIPMENT IS READY FOR FULL SPEED OPERATION. USER
ASSUMES ALL RESPONSIBILITY FOR ASSURING SYSTEM IS
ABLE TO SAFELY RUN AT FULL SPEED. FAILURE TO ENSURE
THAT THE MOTOR, SYSTEM, AND ANY ATTACHED
EQUIPMENT IS READY FOR FULL SPEED OPERATION COULD
RESULT IN EQUIPMENT DAMAGE.
a. Put unit into drive mode.
b. Check full load amps on motor terminals T1, T2, and T3.
Verify motor amps are within drive and motor rated
current and are balanced within 3%. If incorrect, see 8 Start
Up Troubleshooting for isolation procedures.
c. Check full load amps on input terminals L1, L2, and L3.
Verify that current is within FLA of drive and balanced
®
MG14I102 - VLT is a registered Danfoss trademark
7. Check motor rotation direction in drive control as
follows.
8. Check motor rotation direction in bypass as
follows.
CAUTION
9. Check full load amps in drive mode on motor
terminals.
4 4
31