Baldor MN605, Installation And Operating Manual

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2-2 MN605
WARNING: Guards must be installed for rotating parts such as couplings, pulleys, external fans, and unused shaft
extensions, should be permanently guarded to prevent accidental contact by personnel. Accidental
contact with body parts or clothing can cause serious or fatal injury.
Guarding
Guards must be installed for rotating parts such as couplings, pulleys, external fans, and unused shaft
extensions. This is particularly important where the parts have surface irregularities such as keys, key ways or set
screws. Some satisfactory methods of guarding are:
1. Covering the machine and associated rotating parts with structural or decorative parts of the driven
equipment.
2. Providing covers for the rotating parts. Covers should be sufficiently rigid to maintain adequate guarding
during normal service.
Power Connection
Motor and control wiring, overload protection, disconnects, accessories and grounding should conform to
the National Electrical Code and local codes and practices. Ground the motor by attaching a strap from an
established ground point to the grounding bolt provided inside the conduit box.
Conduit Box
For ease of making connections, an oversize conduit box is provided. The box can be rotated 360° in 90°
increments.
Power
Connect the motor leads as shown on the connection diagram located on the name plate or inside the cover on
the conduit box. Be sure the following guidelines are met:
1. DC power is within ±5% of rated voltage (not to exceed 600VDC). (See motor name plate for ratings).
OR
2. DC field power is within ±1% of rated voltage.
Motor Connections
Terminal connections should be made as specified. See the connection diagrams located in Section 4 of this
manual. Tables 2−1 and 2−2 show the NEMA standard lead markings and the Accessory Markings.
Table 2-1 NEMA Standard Lead Markings
Lead Markings Motor
Armature A1, A2
Field (shunt) F1, F2, F3, F4, etc.
Field (series) S1, S2
Thermostat P1, P2, etc.
Space Heater H1, H2, H3, H4, etc.
Thermal Protector P1, P2, P3, P4, etc.
Resistance Temperature Detector (RTD) R1, R2, R3, R4, etc.
Optional Brush Monitor System A1Probe, A2Probe
Table 2-2 Accessory Markings
DC Tachometers + —
XPY 1 2 G
XC Red (1) Black (2) G
RL
AC Tachometers 45/90V Output
45V Red White
90V Red Black
Brake Coil Leads B1, B2, B3, etc.
Space Heater (Brake) H1, H2, H3, H4, etc.
Brake Interlock Switch BS1, BS2, BS3, etc.