PDL D3-2.5, Instruction Manual, Page: 33 / 113

Microdrive Series Instruction Manual
4201-109 Rev I
33
1.5 COMMISSIONING THE MICRODRIVE
WARNING:
OBSERVE THE SAFETY PRECAUTIONS
DETAILED AT
THE BEGINNING OF THIS MANUAL
Before attempting commissioning, be sure you understand
the operation of the Microdrive and have read this manual.
Plan and define your wiring, controls and adjustments
beforehand.
CHECK INSTALLATION:
Check that the Microdrive will not be subject to an
unacceptable environment. Check that adequate airflow is
available. For reliable operation, operating temperature
must not exceed 50°C.
CHECK WIRING:
Check all wiring thoroughly according to the circuits (refer
fig. 1.4). Check that all supply and motor cabling is
correctly dimensioned for the application, the Microdrive is
bonded to earth and electrical connections are secure. The
cable connecting the Microdrive to the motor should be of
screened construction with the screen (forming the earth
connection) solidly bonded to the motor and the Microdrive
chassis. Be particularly careful that power and motor wiring
is not transposed or otherwise incorrect. Control wiring
must be screened and run separately from power cables.
Note that the Microdrive-3 (UD3) does not have internal
power fuses. Check that the correct fuses (fig. 1.4a) are
fitted at the supply.
Note that all stop and PTC circuits must be closed before
the Microdrive will start. Check control wiring conforms to
the configuration selected.
Test Without Motor:
Before proceeding, ISOLATE THE MOTOR. Switch the
mains supply on to the Microdrive.
CHECK MICRODRIVE OPERATION:
Check that the cooling fan at the top of the Microdrive is
blowing air out of the top of the unit. Note that the
Microdrive-i (UDi) heatsink cooling fan is powered from the
input three phase mains supply and is phase sequence
sensitive. If this fan is not blowing air from the top of the
UDi, swap the order of two of the input supply phases.
Check that the Microdrive operates normally and displays
the status and control line 0. Familiarise yourself with the
keyboard displays.
If any faults are indicated at any time, refer to Section 1.7.3
- Screen Fault Messages.
Select Screen -3:
Check the status and operation of all inputs (refer Table 1.1,
Screen -3). WARNING: – the Microdrive will still respond to
the inputs while displaying Screen -3.
Set the Adjustments:
Referring to Table 1.1 and Section 1.4.2 - Standard Screens
(Short Menus), set all relevant Microdrive and motor
parameters.
Test Run with Motor:
Return to Screen 0. Stop the Microdrive if it is running.
WARNING:
CHECK THAT ALL PERSONNEL ARE CLEAR
OF THE MOTOR AND ATTACHED MACHINERY
AND THAT IT IS SAFE TO OPERATE THE MACHINE.
Remove the motor isolation:
Set a low reference speed and start the Microdrive. Check
immediately for correct direction of rotation (if incorrect,
stop the Microdrive, isolate it and allow to discharge before
reversing two motor phase wires). Use the Microdrive
adjustments to achieve the desired operation of the
Microdrive.
Start and run the Microdrive:
Check that the Microdrive correctly responds to all control
inputs without the motor drawing excessive current.
Remember to measure motor current (Microdrive display),
not the mains current.
TEST RUN:
Operate the Microdrive and drive system, making control
adjustments as necessary.
For maximum reliability of operation, try to ensure your
setting up does not cause the Microdrive to rely on its
protective override features (ILT - current limit; VLT -
voltage limit). These should be regarded as back-up
features, not to be used to overcome inadequate set up. If
ILT is displayed, your acceleration rate is probably too high
or your boost setting is too low or too high. If VLT is
displayed, your deceleration rate is probably too fast.
Once satisfactorily commissioned, be sure to record all
settings on the Commissioning Configuration Record
provided for this purpose in Appendix 1. This makes life a
lot easier if unauthorised adjustment occurs or if Microdrive
replacement is necessary.