EM1500 User’s Manual
81
Emissions
The EM1500 meets the following emission standards using the enhanced-EMC PCB (part # 175-0234 rev.
C) and the Rabbit 3000. This PCB is used in all EM1500 boards that carry the CE mark.
•
EN55022:1998 Class B
•
FCC Part 15 Class B
Your results may vary, depending on your application, so additional shielding or filtering may be needed to
maintain the Class B emission qualification.
Design Guidelines
Follow these requirements for incorporating an EM1500 into your application to comply with CE require-
ments.
General
•
The power supply provided with the Tool Kit is for development purposes only. It is the customer’s
responsibility to provide a CE-compliant power supply for the end-product application.
•
When connecting the EM1500 to outdoor cables, the customer is responsible for providing CE-approved
surge/lighting protection.
•
Rabbit recommends placing digital I/O or analog cables that are 3 m or longer in a metal conduit to assist
in maintaining CE compliance and to conform to good cable design practices.
•
When installing or servicing the EM1500, it is the responsibility of the end-user to use proper ESD pre-
cautions to prevent ESD damage to the EM1500.
•
To meet EMC requirements, and in particular to prevent misoperation or damage from electrostatic dis-
charges, connect the enclosure to a protective ground using a low-impedance path. The recommended
way to connect an EM1500 to a building ground is to mount the unit on a metal panel that is already
grounded. Use a wire with a size of at least 20AWG (0.5 mm
2
), preferably stranded, to establish a con-
nection between one of the screws holding the back cover in place and the protective building ground.
This wire should be as short as possible to keep its impedance low.
Safety
•
All inputs and outputs to and from the EM1500 must
not
be connected to voltages exceeding SELV
levels (42.4 V AC peak, or 60 V DC).
Interfacing the EM1500 to Other Devices
Since the EM1500 is designed to connect to other devices, follow good EMC practices to ensure compli-
ance. CE compliance is ultimately the responsibility of the integrator. Additional information, tips, and
technical assistance are available from your authorized Rabbit distributor, and are also available on our
Web site at www.rabbit.com.
Содержание EM1500
Страница 14: ...10 www rabbit com Introduction...
Страница 22: ...18 www rabbit com Getting Started...
Страница 76: ...72 www rabbit com EM1500 Configuration...
Страница 90: ...86 www rabbit com EM1500 Specifications...
Страница 104: ...100 www rabbit com Serial and TCP Protocols...
Страница 118: ...114 www rabbit com EM1500 FAQ...