GE T60 Instruction Manual page 588

INPUTS/OUTPUTS
• Off — Defaults the input to Logic 0
• Latest/On — Freezes the input in case of lost communications. When the latest state is not known, such as after relay
power-up but before the first communication exchange, the input defaults to Logic 1. When communication resumes,
the input becomes fully operational.
• Latest/Off — Freezes the input in case of lost communications. When the latest state is not known, such as after relay
power-up but before the first communication exchange, the input defaults to Logic 0. When communication resumes,
the input becomes fully operational.
5.9.6.2 Direct outputs
SETTINGS  INPUTS/OUTPUTS  DIRECT OUTPUTS  DIRECT OUTPUT 1(32)
 DIRECT OUTPUT 1

DIRECT OUT 1 NAME
DIR OUT 1 OPERAND
5.9.6.3 Application examples
The examples introduced in the earlier Direct Inputs and Outputs section (part of the Product Setup section) are continued
5
here to illustrate usage of the direct inputs and outputs.
Example 1: Extending input/output capabilities of a UR relay
Consider an application that requires additional quantities of contact inputs or output contacts or lines of programmable
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 inputs/outputs and programmable logic requirements. The figure shows that two
IEDs are connected via single-channel digital communication cards.
Assume that contact input 1 from UR IED 2 is to be used by UR IED 1. The following settings are 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
UR IED 2:
DIRECT OUT 12 OPERAND
The operand of UR IED 2 is now available in UR IED 1 as
Cont Ip 1 On
5-370
DIRECT OUT 1 NAME:

Dir Out 1
DIRECT OUT 1 OPERAND:

Off
DIRECT OUTPUT 1

EVENTS: Disabled
— This setting allows the user to assign a descriptive name to the direct output.
— This sets the FlexLogic operand that determines the state of this direct output.
Figure 5-219: Input and output extension via direct inputs and outputs
= "2"
= "12"
= "Cont Ip 1
On"
Range: up to 12 alphanumeric characters
Range: FlexLogic operand
Range: Enabled, Disabled
.
DIRECT INPUT 5 ON
T60 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS