Rockwell Automation 509 Full Voltage Starter - Size 8 (Series B Construction) - Manual (Page 2)

Page 2 of 10
BULLETIN
505 z 509
coil retaining spring; third, loosen the four captive
screws holding down the coil cover; and fourth, slide
off the coil cover. The cross bar assembly, as one
unit, is then lifted out. Disassembly of all parts of the
cross bar assembly is easily accomp-lished by
loosening all the nuts and screws on the push rod
assemblies.
MAGNET ARMATURE ASSEMBLY – The magnet
armature is laminated and is mounted on the
armature plate with a rubber pad to absorb shock
and prolong life. To remove the magnet armature
assembly, loosen the lock nut at the lower end of the
push rods. Note – Removal of the magnet
armature assembly will probably cause the push
rod shims to fall free. Be sure that upon
replacing the magnet armature assembly, the
push rod shims are placed in the same position,
so that consistent overtravel may be maintained.
Take out the retaining blocks located on each side of
the magnet armature. Force the armature plate
through the armature, thereby isolating the magnet
armature. Note - The armature pad, spacer, and
retainer must be replaced in the same order. For
correct replacement, refer to the exploded view
on Page 3.
MAGNET YOKE
– The magnet yoke is laminated
and mounted on an aluminum base casting. The
pressure molded coil is mounted with the yoke
projecting into the openings of the coil so that the
coil slides out with the magnet yoke.
OPERATING COIL
– Unique high-pressure results
in a coil protected against mechanical damage and
the corrosive effects of atmospheric conditions and
protects the coil against swelling when subjected to
over-voltage. Very little trouble can be expected
from the operating coils.
Removing the coil is a simple operation that is
easily performed from the front. First, remove the
coil terminal cover; second, detach the coil leads;
third, loosen the two
screws located on the coil retaining spring; and
fourth, slacken the four captive screws holding down
the coil cover. The coil cover is then lifted out from
the font. Now remove the operating coil and magnet
yoke and detach the yoke from the coil.
To replace the operating coil, first insert the
magnet yoke into the operating coil. After this has
been accomplished, insert both the operating coil
and the magnet yoke, as a unit, into the switch unit
securely. Now replace the coil cover into the switch
unit, but do not tighten the screws on the coil
retaining spring. Be sure to place the auxiliary
contact operating lever into the auxiliary contact
actuator fastened to the cross bar.
(See instructions
on page 3.) Tighten the coil retaining spring screws
and the four captive screws on the coil cover.
Restore the coil leads and put back the coil terminal
cover.
Coil Current
(Amperes)
Coil
Number
volts
Inrush sealed
120 17.6 .392
208 10.2 .226
240 8.8 .196
480 4.4 .093
107D206
(90V DC)
600 3.5 .078
NOTE
– Given values are input current (amperes)
into the control transformers with 120 volt, 60 Hz
secondary.
CONTROL PANEL
- All auxiliary equipment –
capacitor, rectifier, resistors, contact protector,
terminal blocks and control transformer (when used)
– is mounted in a metal cabinet. The cabinet is
normally mounted below the starter, but may be
mounted separate from the starter. The cabinet
(when below starter) is mounted on rubber
grommets to absorb heavy shock during opening
and closing of starter. The control panel has a
hinged cover which can be swung out for inspection
or to check wiring of auxiliary equipment.
BULLETIN 1495 AUXILIARY CONTACTS –
Provisions are made for two auxiliary contacts in
addition to the one which is required for the
economizing action. Each auxiliary contact provides
two independent circuits, either of which can be set
as normally open and normally closed, depending
on the circuit requirements. (
See Instructions - Page 6. )
Operating Coil