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Model 6 Motor Control Centers 80459-641-01E
Section 7—Motor Logic™ Solid-State Overload Relay (SSOLR) 10/2012
© 1999–2012 Schneider Electric All Rights Reserved 70
ENGLISH
Motor Logic Retrofit Applications
Remove the starter from the unit to replace the overload (melting
alloy/bi-metallic). See “Removing the Control Unit” on page 57.
Terminal blocks (OEKTTBML) should be used for applications requiring
multiple passes to achieve the proper adjustment range.
Restrain looped load cabling between the overload and the terminal block
with wire ties or the equivalent when terminal kits are used.
On Size 3 and 4 starter units, the overload reset button is 1-5/8 in. (41 mm)
further from the unit door and may require an alternative reset assembly
(80420-862-51).
Retrofitting NEMA rated Compac 6, six-inch (52 mm) units is not
recommended. The Motor Logic overload relay is available factory installed
in Compac 6.
On 600 V Size 1 applications, add a third wire tie between the circuit
breaker and contactor near the contactor line lugs. Refer to instruction
bulletin 30072-013-29 for additional information.
NOTE: For retrofit applications, contact your Schneider Electric field sales
representative for assistance. Schneider Electric assumes no responsibility for
the design or implementation of retrofits unless contracted to perform them.
Use copper wire only on device power and control terminals. Conductors
must be sized for 60 °C or 75 °C National Electrical Code
®
(NEC
®
) ratings.
Pressure wire terminals are suitable for wire sizes #16–12 AWG, solid or
stranded. Terminal instruction labels are located adjacent to the terminal
block or on the wireway door.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Apply appropriate personal protective equipment (PPE) and follow safe
electrical work practices. See NFPA 70E or CSA Z462.
• This equipment must only be installed and serviced by qualified
electrical personnel.
• Turn off all power supplying this equipment before working on or inside
equipment.
• Always use a properly rated voltage sensing device to confirm power is
off.
• Replace all devices, doors, and covers before turning on power to this
equipment.
Failure to follow this instruction will result in death or serious injury.
NOTICE
HAZARD OF EQUIPMENT DAMAGE
• Lug Kits:
Use only 9999 LBO and 9999 LLO
purchased after 5/1/95 for Size 0, 00B, 00C, and Size 1 units.
• Z Element:
Do not use the 9999Z3, 9999Z2, or 9999Z1 developed for open and
general enclosed starters.
Failure to follow this instruction can result in equipment damage.