3-26
L60 Line Phase Comparison System
GE Multilin
3.3 DIRECT INPUT AND OUTPUT COMMUNICATIONS
3 HARDWARE
3
3.3DIRECT INPUT AND OUTPUT COMMUNICATIONS
3.3.1 DESCRIPTION
The direct inputs and outputs feature makes use of the type 7 series of communications modules, which allow direct mes-
saging between UR devices. These communications modules are outlined in the table later in this section.
The communications channels are normally connected in a ring configuration as shown in the following figure. The trans-
mitter of one module is connected to the receiver of the next module. The transmitter of this second module is then con-
nected to the receiver of the next module in the ring. This is continued to form a communications ring. The figure illustrates
a ring of four UR-series relays with the following connections: UR1-Tx to UR2-Rx, UR2-Tx to UR3-Rx, UR3-Tx to UR4-Rx,
and UR4-Tx to UR1-Rx. A maximum of 16 UR-series relays can be connected in a single ring
Figure 3–26: DIRECT INPUT AND OUTPUT SINGLE CHANNEL CONNECTION
The interconnection for dual-channel type 7 communications modules is shown as follows. Two channel modules allow for
a redundant ring configuration. That is, two rings can be created to provide an additional independent data path. The
required connections are: UR1-Tx1 to UR2-Rx1, UR2-Tx1 to UR3-Rx1, UR3-Tx1 to UR4-Rx1, and UR4-Tx1 to UR1-Rx1
for the first ring; and UR1-Tx2 to UR4-Rx2, UR4-Tx2 to UR3-Rx2, UR3-Tx2 to UR2-Rx2, and UR2-Tx2 to UR1-Rx2 for the
second ring.
Figure 3–27: DIRECT INPUT AND OUTPUT DUAL CHANNEL CONNECTION
The following diagram shows the connection for three UR-series relays using two independent communication channels.
UR1 and UR3 have single type 7 communication modules; UR2 has a dual-channel module. The two communication chan-
nels can be of different types, depending on the Type 7 modules used. To allow the direct input and output data to
cross-
over
from channel 1 to channel 2 on UR2, the
DIRECT I/O CHANNEL CROSSOVER
setting should be “Enabled” on UR2. This
forces UR2 to forward messages received on Rx1 out Tx2, and messages received on Rx2 out Tx1.
842006A2.CDR
Tx
Tx
Tx
Tx
UR 1
UR 2
UR 3
UR 4
Rx
Rx
Rx
Rx
842007A3.CDR
Tx1
UR 1
Tx2
Rx1
Rx2
Tx1
UR 2
Tx2
Rx1
Rx2
Tx1
UR 3
Tx2
Rx1
Rx2
Tx1
UR 4
Tx2
Rx1
Rx2
Summary of Contents for L60
Page 10: ...x L60 Line Phase Comparison System GE Multilin TABLE OF CONTENTS ...
Page 57: ...GE Multilin L60 Line Phase Comparison System 2 27 2 PRODUCT DESCRIPTION 2 3 SPECIFICATIONS 2 ...
Page 58: ...2 28 L60 Line Phase Comparison System GE Multilin 2 3 SPECIFICATIONS 2 PRODUCT DESCRIPTION 2 ...
Page 482: ...6 26 L60 Line Phase Comparison System GE Multilin 6 5 PRODUCT INFORMATION 6 ACTUAL VALUES 6 ...
Page 554: ...10 8 L60 Line Phase Comparison System GE Multilin 10 2 BATTERIES 10 MAINTENANCE 10 ...
Page 674: ...B 110 L60 Line Phase Comparison System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Page 704: ...C 30 L60 Line Phase Comparison System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Page 720: ...E 10 L60 Line Phase Comparison System GE Multilin E 1 PROTOCOL APPENDIX E E ...
Page 732: ...F 12 L60 Line Phase Comparison System GE Multilin F 2 DNP POINT LISTS APPENDIX F F ...
Page 742: ...H 8 L60 Line Phase Comparison System GE Multilin H 3 WARRANTY APPENDIX H H ...