
5-172
C30 CONTROLLER SYSTEM – INSTRUCTION MANUAL
INPUTS/OUTPUTS
CHAPTER 5: SETTINGS
5
UR IED 1:
DIRECT INPUT 5 DEVICE ID
= “2”
DIRECT INPUT 5 BIT NUMBER
= “12”
UR IED 2:
DIRECT OUT 12 OPERAND
= “
Cont Ip 1 On
”
The
Cont Ip 1 On
operand of UR IED 2 is now available in UR IED 1 as
DIRECT INPUT 5 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.
Figure 5-86: Sample interlocking busbar protection scheme
Assume that Phase Instantaneous Overcurrent 1 is used by Devices 2, 3, and 4 to block Device 1. If not blocked, Device 1
trips the bus upon detecting a fault and applying a short coordination time delay.
The following settings are applied (assume Bit 3 is used by all 3 devices to send the blocking signal and Direct Inputs 7, 8,
and 9 are used by the receiving device to monitor the three blocking signals).
UR IED 2:
DIRECT OUT 3 OPERAND
: "
PHASE IOC1 OP
"
UR IED 3:
DIRECT OUT 3 OPERAND
: "
PHASE IOC1 OP
"
UR IED 4:
DIRECT OUT 3 OPERAND
: "
PHASE IOC1 OP
"
UR IED 1:
DIRECT INPUT 7 DEVICE ID
: "2"
DIRECT INPUT 7 BIT NUMBER
: "3"
DIRECT INPUT 7 DEFAULT STATE
: select "On" for security, select "Off" for dependability
DIRECT INPUT 8 DEVICE ID
: "3"
DIRECT INPUT 8 BIT NUMBER
: "3"
DIRECT INPUT 8 DEFAULT STATE
: select "On" for security, select "Off" for dependability
DIRECT INPUT 9 DEVICE ID
: "4"
DIRECT INPUT 9 BIT NUMBER
: "3"
DIRECT INPUT 9 DEFAULT STATE
: select "On" for security, select "Off" for dependability
Now the three blocking signals are available in UR IED 1 as
DIRECT INPUT 7 ON
,
DIRECT INPUT 8 ON
, and
DIRECT INPUT 9 ON
. Upon losing
communications or a device, the scheme is inclined to block (if any default state is set to “On”), or to trip the bus on any
overcurrent condition (all default states set to “Off”).
Содержание C30
Страница 12: ...1 4 C30 CONTROLLER SYSTEM INSTRUCTION MANUAL FOR FURTHER ASSISTANCE CHAPTER 1 INTRODUCTION 1...
Страница 282: ...5 126 C30 CONTROLLER SYSTEM INSTRUCTION MANUAL SYSTEM SETUP CHAPTER 5 SETTINGS 5 Figure 5 56 Disconnect switch logic...
Страница 354: ...6 16 C30 CONTROLLER SYSTEM INSTRUCTION MANUAL PRODUCT INFORMATION CHAPTER 6 ACTUAL VALUES 6...
Страница 398: ...C 6 C30 CONTROLLER SYSTEM INSTRUCTION MANUAL COMMAND LINE INTERFACE APPENDIX C COMMAND LINE INTERFACE C...
Страница 406: ...iv C30 CONTROLLER SYSTEM INSTRUCTION MANUAL ABBREVIATIONS...