Service manual

S-4000 CAED Omron
1-41
Revised 10/2009
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Phone: [phone] (Service), [phone] (Spare Parts); Fax: [phone]
E - MACHINE ADJUSTMENTS
22. PROTECTION DURING VOLTAGE FLUCTUATION (SPECIAL ACCESSORY)
The special accessory, guard voltage relay HRN-35 (VC1), is placed in the machine control box. It is pre-set
and sealed from the manufacturer. If the supply voltage runs within the required range, the Led light Un on
the relay lits green. Once the upper limit is exceeded (255V), the LED lights lits red
. If the bottom limit
is exceeded (185V) the green LED light turns out and the red LED light comes on. The control LED
lights turn out if the voltage goes back to the required values. The delay of the relay activation is set up to a
minimal value.
Exceeding upper supply voltage limit (255V)
a) Turning the switch on
, red LED light is on . Supply voltage for electronics is cut off, the
display is not illuminated, the machine cannot be turned on.
b) If the limit values of the supply voltage are exceeded during sewing, the machine
automatically switches off in order to prevent control electronics from damaging. Once
the value gets back to normal (185V - 255V), the machine can be switched on in a
standard way (see section C1).
Exceeding bottom supply voltage limit (185V)
a) Once the voltage drops below the bottom limit, the display shows the „LOW VOLTAGE“ message and
the machine cannot be switched on.
b) If the supply voltage drops during sewing, the machine automatically stops and the display shows the
„LOW VOLTAGE“.message.
Once the voltage reaches the value 185V the machine can be switched on in a standard way (see
section C1).