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GE L60 Instruction Manual Page 198

Line phase comparison system, ur series.
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5.2 PRODUCT SETUP
a) MAIN MENU
PATH: SETTINGS
PRODUCT SETUP
 DIRECT I/O
5
This option is available when an INTER-RELAY COMMUNICATIONS card is specified at the time of order-
ing. With the option, direct inputs/outputs display by default. When you enable the teleprotection feature,
direct I/O is not visible.
Direct inputs and outputs are intended for exchange of status information (inputs and outputs) between UR-series relays
connected directly via type 7 or type 2 digital communications cards. The mechanism is very similar to IEC 61850 GSSE,
except that communications takes place over a non-switchable isolated network and is optimized for speed. On type 7
cards that support two channels, direct output messages are sent from both channels simultaneously. This effectively
sends direct output messages both ways around a ring configuration. On type 7 cards that support one channel, direct out-
put messages are sent only in one direction. Messages will be resent (forwarded) when it is determined that the message
did not originate at the receiver.
Direct output message timing is similar to GSSE message timing. Integrity messages (with no state changes) are sent at
least every 1000 ms. Messages with state changes are sent within the main pass scanning the inputs and asserting the
outputs unless the communication channel bandwidth has been exceeded. Two self-tests are performed and signaled by
the following FlexLogic™ operands:
1.
DIRECT RING BREAK
sent from a UR-series relay are not being received back by the relay.
2.
DIRECT DEVICE 1 OFF to DIRECT DEVICE 16 OFF
output messages from at least one direct device are not being received.
Direct input and output settings are similar to remote input and output settings. The equivalent of the remote device name
strings for direct inputs and outputs is the
relay in all direct output messages. All UR-series IEDs in a ring should have unique numbers assigned. The IED ID is used
to identify the sender of the direct input and output message.
If the direct input and output scheme is configured to operate in a ring (
CH2 RING CONFIGURATION
break self-test is triggered. The self-test error is signaled by the
5-60

DIRECT I/O
DIRECT OUTPUT
DEVICE ID: 1
DIRECT I/O CH1 RING
MESSAGE
CONFIGURATION: Yes
DIRECT I/O CH2 RING
MESSAGE
CONFIGURATION: Yes
DIRECT I/O DATA
MESSAGE
RATE: 64 kbps
DIRECT I/O CHANNEL
MESSAGE
CROSSOVER: Disabled
 CRC ALARM CH1
MESSAGE
 CRC ALARM CH2
MESSAGE
 UNRETURNED
MESSAGE
 MESSAGES ALARM CH1
 UNRETURNED
MESSAGE
 MESSAGES ALARM CH2
(direct input/output ring break). This FlexLogic™ operand indicates that direct output messages
DIRECT OUTPUT DEVICE ID
is "Yes"), all direct output messages should be received back. If not, the direct input/output ring
L60 Line Phase Comparison System
Range: 1 to 16
Range: Yes, No
Range: Yes, No
Range: 64 kbps, 128 kbps
Range: Disabled, Enabled
See page 5–65.
See page 5–65.
See page 5–66.
See page 5–66.
(direct device offline). These FlexLogic™ operands indicate that direct
. The
DIRECT OUTPUT DEVICE ID
DIRECT I/O CH1 RING CONFIGURATION
DIRECT RING BREAK
5 SETTINGS
5.2.16 DIRECT INPUTS/OUTPUTS
setting identifies the
or
DIRECT I/O
FlexLogic™ operand.
GE Multilin

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