Description
The Allen-Bradley Servo Controller 1394C-SJT10-D is a System with Better Ring Rates and SERCOS Communication Series Enhancements, SERCOS Network, a 10 Kilowatt Power Rating, and a 360-480AC Volts Input Voltage.This section outlines the practices which minimize the possibility of noise-related failures as they apply specifically to 1394 installations. For more information on the concept of electrical noise reduction, refer to System Design for Control of Electrical Noise Reference Manual (publication GMC-RM001x-EN-P). Establishing Noise Zones Observe the following guidelines when laying out your panel (refer to Figure 1.7 for zone locations). • The clean zone (C) is to the left of the 1394 and includes the I/O wiring, feedback cable, and DC filter (grey wireway). • The dirty zone (D) is beneath and to the right of the 1394 (black wireway) and includes the circuit breakers, transformer, 24V dc power supply, contactors, AC line filter, and motor power cables. • The very dirty zone (VD) is limited to where the AC line (EMC) filter VAC output jumpers over to the 1394. Shielded cable is required only if the very dirty cables enter a wireway. • The SERCOS fiber-optic cables are immune to electrical noise, but are relatively fragile and best run with other light weight cables.Mounting Guidelines to Reduce Electrical Noise When mounting an AC line (EMC) filter, external shunt resistor, or wiring the motor brake and thermal switch, refer to the sections below for guidelines designed to reduce system failures caused by excessive electrical noise. AC Line Filters Observe the following guidelines when mounting your AC line (EMC) filter (refer to Figure 1.7 for an example). • Mount the AC line filter on the same panel as the 1394 along the right side of the right-most axis module. • Good HF bonding to the panel is critical. For painted panels, refer to Figure 1.5. • Segregate input and output wiring as far as possible.External Shunt Modules Observe the following guidelines when mounting your external shunt module (refer to Figure 1.9 and for an example). • Mount circuit components and wiring in the very dirty zone or in an external shielded enclosure. Run shunt power and fan wiring inside metal conduit to minimize the effects of EMI and RFI. • Mount resistors (other than metal-clad) in a shielded and ventilated enclosure outside the cabinet. • Keep unshielded wiring as short as possible. Keep shunt wiring as flat to the cabinet as possible. • Route thermal switch and fan wires separate from shunt power.When mounting your shunt module inside the enclosure, follow these additional guidelines (refer to Figure 1.10 and for an example). • Metal-clad modules can be mounted anywhere in the dirty zone, but as close to the 1394 as possible. • Shunt power wires can be run with motor power cables. • Keep unshielded wiring as short as possible. Keep shunt wiring as flat to the cabinet as possible. • Separate shunt power cables from other sensitive, low voltage signal cables.
Model recommendation:
The Allen-Bradley Servo Controller 1394C-SJT10-D is a System with Better Ring Rates and SERCOS Communication Series Enhancements, SERCOS Network, a 10 Kilowatt Power Rating, and a 360-480AC Volts Input Voltage.This section outlines the practices which minimize the possibility of noise-related failures as they apply specifically to 1394 installations. For more information on the concept of electrical noise reduction, refer to System Design for Control of Electrical Noise Reference Manual (publication GMC-RM001x-EN-P). Establishing Noise Zones Observe the following guidelines when laying out your panel (refer to Figure 1.7 for zone locations). • The clean zone (C) is to the left of the 1394 and includes the I/O wiring, feedback cable, and DC filter (grey wireway). • The dirty zone (D) is beneath and to the right of the 1394 (black wireway) and includes the circuit breakers, transformer, 24V dc power supply, contactors, AC line filter, and motor power cables. • The very dirty zone (VD) is limited to where the AC line (EMC) filter VAC output jumpers over to the 1394. Shielded cable is required only if the very dirty cables enter a wireway. • The SERCOS fiber-optic cables are immune to electrical noise, but are relatively fragile and best run with other light weight cables.Mounting Guidelines to Reduce Electrical Noise When mounting an AC line (EMC) filter, external shunt resistor, or wiring the motor brake and thermal switch, refer to the sections below for guidelines designed to reduce system failures caused by excessive electrical noise. AC Line Filters Observe the following guidelines when mounting your AC line (EMC) filter (refer to Figure 1.7 for an example). • Mount the AC line filter on the same panel as the 1394 along the right side of the right-most axis module. • Good HF bonding to the panel is critical. For painted panels, refer to Figure 1.5. • Segregate input and output wiring as far as possible.External Shunt Modules Observe the following guidelines when mounting your external shunt module (refer to Figure 1.9 and for an example). • Mount circuit components and wiring in the very dirty zone or in an external shielded enclosure. Run shunt power and fan wiring inside metal conduit to minimize the effects of EMI and RFI. • Mount resistors (other than metal-clad) in a shielded and ventilated enclosure outside the cabinet. • Keep unshielded wiring as short as possible. Keep shunt wiring as flat to the cabinet as possible. • Route thermal switch and fan wires separate from shunt power.When mounting your shunt module inside the enclosure, follow these additional guidelines (refer to Figure 1.10 and for an example). • Metal-clad modules can be mounted anywhere in the dirty zone, but as close to the 1394 as possible. • Shunt power wires can be run with motor power cables. • Keep unshielded wiring as short as possible. Keep shunt wiring as flat to the cabinet as possible. • Separate shunt power cables from other sensitive, low voltage signal cables.
Model recommendation:
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