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This document provides an operating manual for the Oriental Motor SB50W Brake Pack, detailing its functions, installation, connection, operation, and maintenance. It is intended for use by qualified personnel in electrical and mechanical engineering.
The SB50W Brake Pack is a control unit designed to facilitate precise motor operation, including clockwise/counterclockwise rotation, instantaneous stopping, and electromagnetic brake control. A key feature is its ability to detect an "open" state in the motor's built-in thermal protector. Upon detection, the ALARM output is turned "OFF," preventing the motor from restarting automatically once the thermal protector resets. This ensures safety and protects the motor from overheating.
The brake pack supports various motor types, including World K Series, FPW Series, KII Series, and K Series motors with output power ranging from 1 to 90 W (excluding 2-pole types). It is not compatible with three-phase motors.
The device offers flexible input/output (I/O) signal handling, initially set to sink logic but switchable to source logic via a selector switch. Input signals are 24 VDC photocoupler inputs, where "ON" signifies current flow and "OFF" signifies no current flow. Output signals are open-collector outputs, also indicating current flow for "ON" and no current flow for "OFF." The output current should not exceed 10 mA.
Installation: The brake pack is designed for heat dissipation via air convection and should be installed on a metal plate for excellent vibration resistance. While DIN rail installation is possible, direct screw mounting is recommended in high-vibration environments. Clearances of at least 25 mm (0.98 in.) horizontally and 50 mm (1.97 in.) vertically must be maintained between the brake pack and any enclosure or other equipment to ensure proper ventilation. Avoid installing near heat or noise-generating equipment. If the ambient temperature exceeds 40°C (104°F), ventilation conditions should be re-evaluated.
The installation location should be well-ventilated, indoors within an enclosure (with vent holes), and provide easy access for inspection. The operating ambient temperature should be 0 to +40°C (32 to 104°F) (non-freezing), with humidity 85% or less (non-condensing). It must be free from explosive atmospheres, toxic gases, splashing water, oil, excessive dust, iron particles, salt, continuous vibration, excessive shocks, electromagnetic noise, radioactive materials, magnetic fields, or vacuum. Direct sunlight exposure should also be avoided. The maximum altitude for operation is 1000 m (3300 ft.) above sea level.
Motor Output Power Setting: A motor output selector switch on the brake pack must be set according to the connected motor's output power. For 1 to 40 W motors, set the switch to "1 - 40 W." For 60 W or 90 W motors, set it to "60 - 90 W." This setting is crucial and must be done before operating the motor; changing it during operation will not apply the new setting.
Wiring and Connections: Connections should be made securely according to the provided wiring examples. Input power voltage must remain within the specified range to prevent fire or electric shock. An earth leakage breaker should be connected to the brake pack's power line for primary circuit protection. In case of power failure, the brake pack's power must be turned off to prevent sudden motor starts upon power restoration.
For input signals, the voltage should be 24 VDC ±10% and 0.1 A or more. A separate power supply for the brake pack is recommended, distinct from noise sources like welding machines. Motor and I/O signal cables should be as short as possible. I/O signal cables must be kept at least 300 mm (11.8 in.) away from high-current cables and should cross power supply and motor cables at right angles, not parallel. AWG 18 (0.75 mm²) or thicker cable is recommended for motor and power supply connections. The GND terminal must be connected to the GND (negative side) of the external control device for proper operation.
For output signals, if connecting an inductive load like a relay, a fly-back voltage control measure (e.g., a diode) or a relay with a built-in flywheel diode should be used.
Operation Modes: The brake pack supports both instantaneous stop and standard start/stop operations for induction and reversible motors.
For electromagnetic brake motors, the brake pack supports:
Operating Cycle: Repeated instantaneous stop operations in short cycles can cause significant motor temperature rise, limiting operating time. Recommended operating cycles vary by motor output power:
Alarm Function: The SB50W detects an open state in the motor's thermal protector, indicating abnormal heating. When an alarm occurs, the ALARM output turns "OFF," the ALARM indicator lights red, and power to the motor is stopped. For electromagnetic brake motors, the brake actuates to hold the load.
Alarm Reset: To reset an alarm, first remove the cause of the alarm. Then, turn all operation inputs (CW, CCW, brake release) "OFF" and ensure the motor is stopped. An alarm can be reset by:
Inspection: Regular periodic inspections are recommended after each motor operation. Key inspection items include:
EMC Conformity: To ensure EMC compliance, effective measures against EMI and EMS are necessary. This includes installing a mains filter in the power source line as close to the brake pack as possible, securing input/output cables with clamps, and connecting the mains filter's ground terminal to a grounding point with a thick, short wire. Avoid placing AC input cables parallel to mains-filter output cables to prevent stray capacitance.
For signal cables, use shielded cables of AWG28 (0.08 mm²) or more, keeping them as short as possible. Ground shielded cables using a metal cable clamp that maintains contact with the entire circumference of the cable.
General Notes on Installation and Wiring:
Disposal: Dispose of the product correctly in accordance with local laws, regulations, or government instructions.
General| Power Supply | DC |
|---|---|
| Output Power | 50 W |
| Motor Type | Bipolar |
| Rated Current | 2.0 A |
| Resistance per Phase | 1.5 Ω |
