26
PROBLEM
CAUSE
REMEDY
1. Conveyor does
not run.
(Conveyor
cannot be turned
on.)
(1) Power plug is not properly
connected to the mains.
(2) Power switch is not turned on.
(3) Inappropriate power source
(1) Inspection, correction
(2) Inspection, correction
(3) Check power sou
rce. → See p.1
5
2. Conveyor is
turned on, but
motor will not
run.
(1) Disconnection or breakage in wiring
(2) Too slow conveyor speed (for
variable-speed type)
(3) Motor protective circuit or
emergency stop switch has been
activated.
(4) Failure inside control device
(1) Check and repair wiring.
(2) Reset to appropriate speed.
(3) Restore protective circuit or emergency
stop switch.
(4) Inspection and repair or replacement
3. Motor runs,
but belt does not
move.
(1) Belt has been slackened off.
(2) Belt has been trapped after
misalignment.
Foreign substances
(3) Overload
(4) Motor gear head teeth have
become worn.
(1) Take up belt. → See p.1
7.
(2) Adju
st belt alignment. → See p.
18-20
Clean and remove any foreign matter.
(3) Check and reduce load.
(4) Inspection and repair or replacement
4. Belt runs, but
speed cannot be
changed. (for
variable-speed
type)
(1) Disconnection or breakage in wiring
of motor and controller
(2) Inappropriate setting of controller
or inverter
(3) Failure of controller or inverter
(1) Inspection, repair
(2) Inspection, correction
(3) Inspection and repair or replacement
5. Conveyor will
not start running
unless belt is
pulled.
(1) Belt has been taken up too much.
(2) Belt has been trapped after
misalignment.
Foreign substances
(1) Loosen belt to proper tension.
(2) Adjust belt alignment. → See p.
18-20
Clean and remove any foreign matter.
6. Electric shock
is received from
conveyor.
(1) Static electricity has been charged
in frames.
(2) Electric leakage
(1) Check and correctly ground machine. →
See p.15
(2) Inspection, correction
11
INSPECTION AND MAINTENANCE
11-1. PROBLEMS AND REMEDIES
