GE T35 Instruction Manual page 183

5 SETTINGS
The
DIRECT INPUT 1 BIT NUMBER
identified here as
DIRECT INPUT 1 BIT NUMBER
The
DIRECT INPUT 1 DEFAULT STATE
following choices are available:
• Setting
DIRECT INPUT 1 DEFAULT STATE
• Setting
DIRECT INPUT 1 DEFAULT STATE
• Setting
DIRECT INPUT 1 DEFAULT STATE
state is not known, such as after relay power-up but before the first communication exchange, the input will default to
Logic 1. When communication resumes, the input becomes fully operational.
• Setting
DIRECT INPUT 1 DEFAULT STATE
state is not known, such as after relay power-up but before the first communication exchange, the input will default to
Logic 0. When communication resumes, the input becomes fully operational.
b) DIRECT OUTPUTS
!"
PATH: SETTINGS INPUTS/OUTPUTS
# DIRECT OUTPUT
1
#
MESSAGE
The is the FlexLogic™ operand that determines the state of this Direct Output.
DIR OUT 1 OPERAND
c) APPLICATION EXAMPLES
The examples introduced in the Product Setup section for Direct I/Os are continued below to illustrate usage of the Direct
Inputs and Outputs.
EXAMPLE 1: EXTENDING I/O CAPABILITIES OF A T35 RELAY
Consider an application that requires additional quantities of digital inputs and/or output contacts and/or lines of program-
mable logic that exceed the capabilities of a single UR-series chassis. The problem is solved by adding an extra UR-series
IED, such as the C30, to satisfy the additional I/Os and programmable logic requirements. The two IEDs are connected via
single-channel digital communication cards as shown below.
Assume Contact Input 1 from UR IED 2 is to be used by UR IED 1. The following settings should be applied (Direct Input 5
and bit number 12 are used, as an example):
UR IED 1:
DIRECT INPUT 5 DEVICE ID
DIRECT INPUT 5 BIT NUMBER
The operand of UR IED 2 is now available in UR IED 1 as
Cont Ip 1 On
EXAMPLE 2: INTERLOCKING BUSBAR PROTECTION
A simple interlocking busbar protection scheme can be accomplished by sending a blocking signal from downstream
devices, say 2, 3 and 4, to the upstream device that monitors a single incomer of the busbar, as shown in the figure below.
GE Multilin
is the bit number to extract the state for this Direct Input. Direct Input x is driven by the bit
. This corresponds to the Direct Output Number of the sending device.
represents the state of the Direct Input when the associated Direct Device is offline. The
to "On" value defaults the input to Logic 1.
to "Off" value defaults the input to Logic 0.
to "Latest/On" freezes the input in case of lost communications. If the latest
to "Latest/Off" freezes the input in case of lost communications. If the latest
!"
DIRECT OUTPUTS
DIRECT OUT 1 OPERAND:
Off
DIRECT OUTPUT
EVENTS: Disabled
UR IED 1
UR IED 2
Figure 5–52: INPUT/OUTPUT EXTENSION VIA DIRECT I/OS
= "2"
= "12"
T35 Transformer Management Relay
!
DIRECT OUTPUT 1(32)
Range: FlexLogic™ operand
Range: Enabled, Disabled
1
TX1
RX1
TX1
RX1
UR IED 2:
DIRECT OUT 12 OPERAND
DIRECT INPUT 5 ON
5.7 INPUTS/OUTPUTS
= "Cont Ip 1 On"
.
5-105
5