SEL-3031 Instruction Manual Date Code 20181001
Job Done Examples
High-Speed Teleprotection or Control With M
IRRORED BITS Communications
3.2
The SEL-3031 can handle as many as three connections of MIRRORED BITS
®
simultaneously over one radio link. For this example, there are three MIRRORED BITS
channels over the SEL-3031. This example shows you how to set the radio and set
different end devices to properly use the radio as a M
IRRORED BITS link.
SEL-3031 MIRRORED BITS Settings
For Figure 3.2, we set Port 1 on both SEL-3031 devices as a MIRRORED BITS
connections.
On each radio, set the following settings on the Port 1 settings.
Figure 3.2 SEL-3031 Port Settings for MIRRORED BITS Connection
The SEL-3031 makes it very simple to set a MIRRORED BITS connection. Set the
PROTO setting to MB8 to make it a MIRRORED BITS port. The SEL-3031 without an
encryption card has data rate of 9600, 19200, or 38400 bps (8, N, 1). Setting the speed
to 38400 provides the lowest latency at the cost of disabling Port 2. Port 3 can still be
used for data at 9600 or 19200 bps speeds.
On Port 1 on each radio, install an SEL-C285 cable to the IED device. As an
alternative, the SEL-3031 can be ordered with a fiber-optic serial port that works with
SEL-2812 transceivers. If you use the fiber-optic port on the SEL-3031, the IED
connection needs to be an SEL-2812MR Fiber-Optic Transceiver.
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