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M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
TESTING
CHAPTER 5: SETTINGS
5
5.11.2 Test mode forcing
SETTINGS
TESTING
TEST MODE FORCING
When in Forcible mode, the operand selected by the
TEST MODE FORCING
setting dictates further response of the M60 to
testing conditions, as described in the following two sections.
The test mode state is indicated on the relay front panel by a combination of the Test Mode LED indicator, the In-Service
LED indicator, and by the critical fail relay, as shown in the following table.
Table 5-46: Test mode operation
5.11.3 Force contact inputs
SETTINGS
TESTING
FORCE CONTACT INPUTS
The force contact inputs feature provides a method of performing checks on the function of all contact inputs.
While in Forcible test mode, the relay contact inputs can be pre-programmed to respond in the following ways:
•
If set to “Normal,” the input remains fully operational. It is controlled by the voltage across its input terminals and can
be turned on and off by external circuitry. Select this value if a given input must be operational during the test. This
includes, for example, an input initiating the test, or being a part of a user pre-programmed test sequence.
•
If set to “Open,” the input is forced to report as opened (Logic 0) while the operand selected by
TEST MODE FORCING
setting is On, regardless of the voltage across the input terminals. While the selected operand is Off, the input behaves
as it does when in service.
•
If set to “Closed,” the input is forced to report as closed (Logic 1) while the operand selected by
TEST MODE FORCING
setting is On regardless of the voltage across the input terminals. While the selected operand is Off, the input behaves
as it does when in service.
TESTING
TEST MODE FORCING:
On
Range: FlexLogic operand
TEST MODE
FUNCTION
In-service
LED
Test mode
LED
Critical fail
relay
TEST MODE
FORCING
Contact input and output behavior
Disabled
Unaffected
Off
Normal
No effect
Normal
Isolated
Off
On
De-energized No effect
Contact outputs disabled
Forcible
Off
Flashing
De-energized Off
Normal
On
Controlled by forcing features
On restart, the
TEST MODE FORCING
setting and the force contact input and force contact output settings revert to
their default states.
FORCE CONTACT
INPUTS
FORCE Cont Ip 1
: Normal
Range: Normal, Open, Closed
FORCE Cont Ip 2
: Normal
Range: Normal, Open, Closed
FORCE Cont Ip xx
: Normal
Range: Normal, Open, Closed
On restart, the
TEST MODE FORCING
setting and the force contact input and force contact output settings revert to
their default states.
Summary of Contents for M60
Page 9: ...TABLE OF CONTENTS M60 MOTOR PROTECTION SYSTEM INSTRUCTION MANUAL ix INDEX ...
Page 10: ...x M60 MOTOR PROTECTION SYSTEM INSTRUCTION MANUAL TABLE OF CONTENTS ...
Page 552: ...5 344 M60 MOTOR PROTECTION SYSTEM INSTRUCTION MANUAL TESTING CHAPTER 5 SETTINGS 5 ...
Page 660: ...iv M60 MOTOR PROTECTION SYSTEM INSTRUCTION MANUAL ABBREVIATIONS ...