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Direct Inputs And Outputs - GE C30 Instruction Manual

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CHAPTER 5: SETTINGS

5.3.15 Direct inputs and outputs

5.3.15.1 Menu
SETTINGS  PRODUCT SETUP  DIRECT I/O
 DIRECT I/O
This option is available when an Inter-Relay Communications card is specified at the time of ordering (see the
Order Code tables). 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 exchange status information (inputs and outputs) between UR-series relays connected directly
via type 7 digital communications cards. The mechanism is very similar to IEC 61850 GOOSE, 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 output messages are sent only in one
direction. Messages are resent (forwarded) when it is determined that the message did not originate at the receiver.
Teleprotection inputs/outputs and direct inputs/outputs are mutually exclusive. As such, they cannot be used
simultaneously. Once teleprotection inputs and outputs are enabled, direct inputs and outputs are blocked, and
vice versa.
Direct output message timing is similar to GOOSE 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:
(direct input/output ring break). This FlexLogic operand indicates that direct output messages sent
DIRECT RING BREAK
from a UR-series relay are not being received back by the relay.
to
DIRECT DEVICE 1 OFF
DIRECT DEVICE 16 OFF
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
messages. All UR-series IEDs in a ring need to have unique numbers assigned. The IED ID is used to identify the sender of
the direct input and output message.
C30 CONTROLLER SYSTEM – INSTRUCTION MANUAL
DIRECT OUTPUTS
DEVICE ID: 1
DIRECT I/O CH1 RING
CONFIGURATION: Yes
DIRECT I/O CH2 RING
CONFIGURATION: Yes
DIRECT I/O DATA
RATE: 64 kbps
DIRECT I/O CHANNEL
CROSSOVER: Disabled
 CRC ALARM CH1
 CRC ALARM CH2
 UNRETURNED
 MESSAGES ALARM CH1
 UNRETURNED
 MESSAGES ALARM CH2
(direct device offline). These FlexLogic operands indicate that direct output
DIRECT OUTPUT DEVICE ID
Range: 1 to 16 in steps of 1
Range: Yes, No
Range: Yes, No
Range: 64 kbps, 128 kbps
Range: Disabled, Enabled
See page 5-116
See page 5-117
setting, which identifies the relay in all direct output
PRODUCT SETUP
5
5-111

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