2-4 SAFETY AND EMC GUIDELINES
SB1391 Hardware and Setup Guide - Document revision no. 1.14
2.2.4. Power Supply and Motor Cable Ground
The power supply cable and the motor cable must have a ground wire that is connected to the
protective earth terminal located on the motor and power connectors. A connection must also be
made between the protective earth screw (located on the top of the unit) and the equipotential bar
inside electrical enclosure.
2.2.5. Thermal Detection
Suitable thermal detection shall be installed to interrupt the power circuit where abnormal
temperatures can cause a hazardous condition.
2.2.6. Over-Travel Protection
Over-travel limit protection shall be provided where over-travel is hazardous. The over-travel
limiting device shall be installed to interrupt the power circuit.
2.3. General Wiring and Electromagnetic Compatibility
(EMC) Guidelines
2.3.1. Routing Signal and Power Cables
Power cables (to the motor, mains outlet, etc.) and signal cables (to I/O, encoder, RS-232, etc.)
must be kept as far apart as possible. Keep at least an inch (∼2.5 cm) for each 3 feet (∼1 m) of
parallel run.
For example, if the motor and encoder cables run parallel for 6 feet (∼2 m), maintain a 2 inch (∼5
cm) separation between them.
Separation of 1 inch for every 3 feet
Motor Cable
Encoder / RS232 Cable
FIGURE 2-1 Cable Spacing
It is recommended to use cables that are completely shielded.
COVER
SHIELD
FIGURE 2-2 Shielded Cable
To Next Page
Loading...
Need help?
General