Magnetek Elevator Quattro DC, Technical Manual

Page: 22 / 178

Quattro DC Startup Guide
20
4. SIZE OF WIRE MUST BE SUITABLE FOR
CLASS I CIRCUITS.
5. Motor lead length should not exceed 20m
(60 ft). If lead length must exceed this
distance, contact Magnetek for proper
installation procedures.
6. The following are required to be contained
in individual conduit runs: 3-phase
incoming power, control power, DC
armature wires, and DC shunt field.
7. Use UL/CSA certified connectors sized for
the selected wire gauge. Install
connectors using the crimping tools
specified by the connector manufacturer.
8. Control wire lead length should not exceed
20m (60 ft). Signal leads and feedback
leads should be run in separate conduits
from power and motor wiring.
9. Verify that the input voltage matches the
drive’s rating.
10. Verify that the motor is wired for the
application voltage and amperage.
11. Tighten all of the three-phase power and
ground connections. See Wire Terminal
Specs on page 139 for torque specs.
12. Check that all control and signal
terminations are also tight.
CAUTION : TO PREVENT DAMAGE TO THE
DRIVE. THE FOLLOWING CHECKS MUST
BE PERFORMED BEFORE APPLYING THE
INPUT POWER.

During shipping, connections may loosen;
inspect all equipment for signs of damage,
loose connections, or other defects.

Ensure the three-phase line voltage is
within

10% of the nominal input voltage.
Also verify the frequency (50 or 60 Hz) is
correct for the elevator control system.

Remove all shipping devices.

Ensure all electrical connections are
secure.

Ensure all transformers are connected for
proper voltage.

Open F1 and F2 and ensure control power
brought into fuse F1 and F2 is 230VAC!
IMPORTANT: Double-check all the power
wires and motor wires to make sure that they
are securely tightened down to their respective
lugs (loose wire connections may cause
problems at any time).
Motor Evaluation
The objective is to thoroughly evaluate the
existing motors before any Quattro DC drives
are installed. Following this evaluation guide
will assist in finding any existing flaws in the
motor so that they can be repaired.
Prior to doing any modernization, the motors
should be tested to determine if any repair
would be required prior to changing the
equipment. Various tests are available to
verify the integrity of the insulation system; the
evaluating company should use the method of
TDR (
T ime D omain R eflectometry) to obtain
the following test measurements:
1. Thoroughly vacuum and clean DC
machine
a. Vacuum exterior and interior of
motor to remove carbon dust
and other potential
contaminants
b. Nitro clean and vacuum DC
machine, particularly
armature, field coils and brush
riggings
2. Visually inspect the DC machine
a. Inspect for signs of overstress.
Crumbling insulation and
exposed windings are
indicators of poor insulation.
b. Inspect the commutator for
signs of improper or unusual
brush wear
3. Perform Electrical performance tests
defined below:
a. Resistance (IEEE Std 118-
1978, IEEE 389-1996)
b. Inductance (IEEE Std 388-
1992, IEEE Std 120-1989)
c. Impedance (IEEE Std 388-
1992, IEEE Std 389-1996,
IEEE Std 43-2000, IEEE Std
120-1989)
d. Phase Angle (IEEE Std 120-
1989)
e. Frequency Response Tests
(IEEE Std 389-1996)
f. Insulation Resistance Tests
(IEEE Std 43-2000)
g. The motor field coils should
have an AC drop test
completed.
4. Insulation testing of the armature,
brush rigging, field coils
a.
Low voltage insulation
resistance should measure
greater than 2 Meg ohms at
500Vac/dc.
5. Check bearing and lubrication
condition.