Dcma Outputs; Remote Rtd Input Protection Logic - GE T60 Instruction Manual

5.9 TRANSDUCER INPUTS AND OUTPUTS
SETTINGS
Function
Enabled = 1
Block
Off = 0
SETTING
ID
= RRTD 1
5
SETTING
Type
Temperature read
from RRTD
SETTING
Open
RUN
RUN

PATH: SETTINGS
 DCMA OUTPUT F1

Hardware and software is provided to generate DCmA signals that allow interfacing with external equipment. Specific hard-
ware details are contained in chapter 3. The DCmA output channels are arranged in a manner similar to transducer input or
CT and VT channels. The user configures individual channels with the settings shown below.
The channels are arranged in sub-modules of two channels, numbered 1 through 8 from top to bottom. On power-up, the
relay automatically generates configuration settings for every channel, based on the order code, in the same manner used
for CTs and VTs. Each channel is assigned a slot letter followed by the row number, 1 through 8 inclusive, which is used as
the channel number.
Both the output range and a signal driving a given output are user-programmable via the following settings menu (an exam-
ple for channel M5 is shown).
The relay checks the driving signal (x in equations below) for the minimum and maximum limits, and subsequently re-
scales so the limits defined as
ing equation is applied:
5-334
AND
SETTINGS
AND
Trip Temperature
Alarm Temperature
RUN
temperature > Trip Pickup
RUN
temperature > Alarm Pickup
Block
Alarm
OR
R > 1000 ohms
None
£
T –40°C
Figure 5–167: REMOTE RTD INPUT PROTECTION LOGIC

TRANSDUCER I/O

DCMA OUTPUTS

DCMA OUTPUT F1
SOURCE: Off
DCMA OUTPUT F1
MESSAGE
RANGE: –1 to 1 mA
DCMA OUTPUT F1
MESSAGE
MIN VAL: 0.000 pu
DCMA OUTPUT F1
MESSAGE
MAX VAL: 1.000 pu
and
MIN VAL MAX VAL
I

min

I
I

=
max
out


k x

T60 Transformer Protection System
SETTINGS
Trip Pickup Delay
Trip Reset Delay
Alarm Pickup Delay
T
PKP
T
PKP

DCMA OUTPUT F1(W8)
Range: Off, any analog actual value parameter
Range: –1 to 1 mA, 0 to 1 mA, 4 to 20 mA
Range: –90.000 to 90.000 pu in steps of 0.001
Range: –90.000 to 90.000 pu in steps of 0.001
match the output range of the hardware defined as

if x
MIN VAL

if x
MAX VAL

I otherwise
– MIN VAL +
min
5 SETTINGS
SETTINGS
Application
Trip Voting
FLEXLOGIC OPERAND
Voting logic
REMOTE RTD 1 TRIP OP
T
DPO
From other remote
FLEXLOGIC OPERANDS
0
RTDs for voting
RRTD 1 ALARM OP
RRTD 1 TRIP PKP
RRTD 1 TRIP DPO
RRTD 1 ALARM PKP
RRTD 1 ALARM DPO
RRTD 1 OPEN
RRTD 1 SHORTED
5.9.4 DCMA OUTPUTS
RANGE
To other remote RTDs
for voting
833026A1.CDR
. The follow-
(EQ 5.54)
GE Multilin