Haas TRT210, Operator'S Manual, Page: 28 / 79

TRT
TILTING ROTARY
TABLE
TRT
O M
PERATOR’S ANUAL
TILTING ROTARY
TABLE
96-5048 rev E
20
June 2002
2.8 T
HE
R
ELAY IN THE
HAAS C
ONTROL
The relay inside the control has a maximum rating of 2 amps at 30 volts D.C./ 120V AC. It is programmed as
either a normally closed or a normally open relay, closed during cycle or after cycle (see "Parameters" sec-
tion). It is intended to drive other logic or small relays. It will not drive other motors, magnetic starters, or loads
exceeding 100 watts. If you use the feedback relay to drive another D.C. relay (or any inductive load), remem-
ber to install a snubber diode across your relay’s coil in the opposite direction of coil current flow. Failure to
use this diode or other arc suppression circuitry on inductive loads, no matter how small they may be, will
result in the contacts of the relay arcing together in a very short time.
To test the relay, use an ohmmeter to measure the resistance across pins 1 and 2. With the control off, the
reading should be infinite. If a lower resistance is measured, the contact points have failed and the relay must
be replaced. Radio Shack sells a relay that can be used as a replacement (Cat. #275-247). This part should
only be replaced by a qualified technician.
2.9 U
SE OF
C
OLLETS
, C
HUCKS
,
AND
F
ACE
P
LATES
(HA5C)
The HA5C accepts standard 5C collets and step collets. When inserting the collets, align the keyway on the
collet with the pin inside the spindle. Push the collet in and turn the collet drawbar clockwise until proper collet
tightness is obtained. Detailed collet installation instructions for model AC 25 / 125 collet closers are provided
later in this section.
Chucks and face plates utilize the 2 3/16-10 threaded nose on the spindle. We recommend using chucks that
are 5" diameter or smaller and weigh less than 20 pounds. Pay special attention when installing chucks.
Always make sure that the thread and the outside diameter of the spindle are free of dirt and chips. Apply a
thin coating of oil to the spindle. Screw the chuck on gently until it seats against the rear of the spindle.
Tighten the chuck to approximately 70 ft.-lb with a strap wrench. Always use a firm, steady pressure to remove
or install chucks or face plates. This is very important to prevent damage to the indexing head.
WARNING !
Never use a hammer or pry bar to tighten the chuck, as this will dam-
age the precision bearings inside your unit.
2.10 HAAS 5C A
IR
C
OLLET
C
LOSERS
(M
ODEL
AC25 / AC125)
There are two types of Air Collet Closers available: Model AC25 (Item G) may be used on the old-style indexer
(S5C) or the newer model HA5C. The AC25 is a non thru-hole type closer and holds parts by utilizing shop air
pressure through a mechanical multiplier to provide between 0 and 3000 pounds of draw force, depending on air
pressure supplied. The mechanical portion provides .03" of longitudinal movement so diameter variations of up
to .007" can be clamped securely without readjustment.
The AC125 (Item F) air collet closer has a 5/16" thru-hole that will allow small diameter stock to extend out the
back of the unit. The AC125 also has a large diameter counterbore in the drawtube that will allow any size
stock that will pass through a standard 5C collet to protrude approximately 1.6" out the back of the collet. This
also allows the use of most standard collet stops. The AC125 uses shop air pressure through a mechanical
multiplier to provide up to 10,000 lb. of draw force (adjustable through the use of an air pressure regulator
supplied by the customer.) The drawtube travel of 0.060" allows the unit to accommodate part diametrical
variations of up to 0.015" without readjustment.
SETTING UP TRT