IDEAL FAST-WAY Si-Low 210 A1, Owner'S Manual

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Cyclo® BBB4
Motor Wiring
Motor Wiring
36
Operation & Maintenance Manual
Cyclo® BBB4
• Do not handle the unit when cables are live. Be sure to turn-off the power; otherwise electric shock may result.
• Connect the power cables to the unit according to the connection diagram shown inside the terminal box or in the maintenance
manual; otherwise electric shock or fi re may result.
• Correctly ground the grounding bolt; otherwise electric shock may result.
• Keep all wiring and electrical parts dry and moisture free.
• Follow local electrical codes and regulations when wiring; otherwise burning, electrical shock, injury and/or fi re may result.
• The motor is not equipped with an overload device. Sumitomo strongly recommends that another protective device
(i.e.:
ground fault interrupters, etc.), in addition to an overload device, be installed in order to prevent burning, electric shock, personal
injury and/or fi re.
• For single phase motors, exercise caution so as to not damage the vinyl cover of the starting capacitor, otherwise shock may result.
• For brakemotors, do not electrify a brake coil continuously when the motor is stopped otherwise the brake coil may burn and
fi re may result.
• For brakemotors, install the rectifi er where the temperature is less than 140°F
(60°C)
• Long wires cause the voltage to drop. Select cables with appropriate diameter so that the voltage drop will be less than 2%.
• After wiring the motor, check that the terminal box mounting bolts are tight.
Measuring Insulation Resistance
When measuring insulation resistance, disconnect the motor from the control panel. Check the motor separately.
Never touch the terminals when measuring insulation resistance otherwise electrical shock may occur.
Measure the insulation resistance before wiring. Insulation resistance varies according to the motor voltage, insulation type, coil
temperature, humidity, length of operation, test electrifi cation time, etc.
Under most conditions, the insulation resistance exceeds the value shown in this table:
Wired connections
must be wrapped in
insulating tape
(not shown)
Power Source Side
Motor Side
Mega-Ohm
Insulation Resistance
500V 1M (Ω)
Table 32. Insulation Resistance
Figure 3. Terminal Ring Wiring Connection
Wiring Guidelines
This section details wiring for standard Sumitomo three-phase motors and brakemotors. If using a motor manufactured by a company other than
Sumitomo, please refer to that manufacturer’s instruction manual for wiring, operating and maintenance details. When wiring motors into the
power supply, Sumitomo recommends the use of terminal rings to facilitate the connection:
A drop in resistance may be attributed to poor insulation. In such
case, do not turn on the power. Contact the nearest Sumitomo
representative, distributor, or sales offi
ce.