Teleprotection - GE C30 Instruction Manual

CHAPTER 5: SETTINGS
5.3.16.3 Unreturned messages alarm CH1(2)
SETTINGS  PRODUCT SETUP  DIRECT I/O  UNRETURNED MESSAGES ALARM CH1(2)
 UNRETURNED
 MESSAGES ALARM CH1
The C30 checks integrity of the direct input and output communication ring by counting unreturned messages. In the ring
configuration, all messages originating at a given device should return within a pre-defined period of time. The unreturned
messages alarm function is available for monitoring the integrity of the communication ring by tracking the rate of
unreturned messages. This function counts all the outgoing messages and a separate counter adds the messages have
failed to return. When the unreturned messages counter reaches the user-definable level specified by the
setting and within the user-defined message count
ALARM CH1 THRESHOLD
FlexLogic operand is set.
UNRET ALM
When the total message counter reaches the user-defined maximum specified by the
setting, both the counters reset and the monitoring process is restarted.
COUNT
Configure the operand to drive an output contact, user-programmable LED, or selected communication-based output.
Latching and acknowledging conditions, if required, are programmed accordingly.
The unreturned messages alarm function is available on a per-channel basis and is active only in the ring configuration.
The total number of unreturned input and output messages is available as the
 UNRETURNED MSG COUNT CH1

5.3.17 Teleprotection

SETTINGS  PRODUCT SETUP  TELEPROTECTION
 TELEPROTECTION

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.
Digital teleprotection transfers protection commands between two or three relays in a secure, fast, dependable, and
deterministic way. Possible applications are permissive or blocking pilot schemes and direct transfer trip (DTT).
Teleprotection can be applied over any analog or digital channels and any communications media, such as direct fiber,
copper wires, optical networks, or microwave radio links. A mixture of communication media is possible.
C30 CONTROLLER SYSTEM – INSTRUCTION MANUAL
UNRET MSGS ALARM CH1

FUNCTION: Disabled
UNRET MSGS ALARM CH1

MESSAGE COUNT: 600
UNRET MSGS ALARM CH1

THRESHOLD: 10
UNRET MSGS ALARM CH1

EVENTS: Disabled
actual value.
TELEPROTECTION

FUNCTION: Disabled
NUMBER OF TERMINALS:

2
NUMBER OF COMM

CHANNELS: 1
LOCAL RELAY ID

NUMBER: 0
TERMINAL 1 RELAY ID

NUMBER: 0
TERMINAL 2 RELAY ID

NUMBER: 0
Range: Enabled, Disabled
Range: 100 to 10000 in steps of 1
Range: 1 to 1000 in steps of 1
Range: Enabled, Disabled
UNRET MSGS ALARM CH1 COUNT
UNRET MSGS ALARM CH1 MESSAGE
ACTUAL VALUES  STATUS  DIRECT INPUTS
Range: Disabled, Enabled
Range: 2, 3
Range: 1, 2
Range: 0 to 63 in steps of 1
Range: 0 to 63 in steps of 1
Range: 0 to 63 in steps of 1
PRODUCT SETUP
UNRET MSGS
, the
DIR IO CH1
5
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