Troubleshooting Guide - Haas+Sohn HRT 160 Operator's And Service Manual

7.2 T
ROUBLESHOOTING
SYMPTOM
Unit is turned on but the
power switch is not
illuminated.
Unit will not index.
Display reads AIR-HOT
Front panel START and
buttons don't
ZERO RETURN
work.
ERROR displays when trying
to program.
Lo Volt or Por On appears
while running, or erratic
operation.
Indexer runs through entire
program without stopping.
High current (Hi Curr)
Ser-Err (Servo Error) during
first home find initiation.
Ser-Err (Servo Error) upon
indexing.
High load (Hi LoAd)
Workpiece Chatter
during index cutting
operation.
Workpiece Chatter
during continuous cutting
operation.
50
G
UIDE
PROBABLE CAUSES
Control is not receiving power.
Table is over maximum operating
temperature (See HI-LOAD).
Conduit not connected to control box.
In PROGRAM mode, or Parameter 6 is set
to 1.
Parameter 7 is set to 1.
Power available to control is inadequate.
Parameter 10 is set to 3.
Brake does not release
Heavy work load
Fixture/workpiece is distorted
Coolant-damaged conduit box
Shorted motor
Faulty main cable or cable connector.
Table driving a heavy load.
Table is jammed.
Check Parameter 25.
Head is jammed
Fixture or workpiece is distorted.
Tailstock or workpiece support not
properly aligned.
Heavy Workload
Brake not operative.
Excessive backlash.
Excessive wormshaft play.
REMEDY
Check power cord, line fuse, and AC
supply.
Allow motor to cool down. If this occurs
often, consult HAAS Service Dept.
Make sure power is OFF and attach
conduit to control box.
Change Parameter 6 to 0. Set to RUN
mode.
Change Parameter 7 to 0.
Power source must be capable of 15 amps
at 120V AC. Use shorter/ heavier gauge
cord.
Change Parameter 10 to 0.
Examine brake solenoid valve, and replace
if necessary. Air line kinked or exhaust
muffler restricted.
Reduce feed.
Ensure fixture workpiece mounting surface
is flat within .001".
Examine conduit box, and replace if
necessary.
Consult Haas Service Department
Check cable and motor fuse.
Reduce workload weight and/or feed rates.
Eliminate obstruction.
Must be set to 8 for HRT 160, 210, 450
(19 for HRT 310)
Eliminate obstruction
Ensure fixture workpiece mounting surface
is flat within .001".
Align tailstock or support to table within
.003 TIR.
Reduce Feed
Consult HAAS Service Dept.
Consult HAAS Service Dept.
Consult HAAS Service Dept.
96-5047 rev L June 2005