Test Mode Forcing; Force Contact Inputs - GE M60 Instruction Manual

TESTING

5.11.2 Test mode forcing

SETTINGS  TESTING  TEST MODE FORCING
 TESTING

When in Forcible mode, the operand selected by the
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
TEST MODE
FUNCTION
Disabled
Isolated
Forcible
On restart, the
their default states.
5

5.11.3 Force contact inputs

SETTINGS  TESTING  FORCE CONTACT INPUTS
 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
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
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.
On restart, the
their default states.
5-342
TEST MODE FORCING:

On
In-service Test mode Critical fail
LED LED relay
Unaffected Off Normal
Off On De-energized No effect
Off Flashing De-energized Off
setting and the force contact input and force contact output settings revert to
TEST MODE FORCING
FORCE Cont Ip 1

: Normal
FORCE Cont Ip 2

: Normal
FORCE Cont Ip xx

: Normal
setting and the force contact input and force contact output settings revert to
TEST MODE FORCING
Range:
setting dictates further response of the M60 to
TEST MODE FORCING
TEST MODE Contact input and output behavior
FORCING
No effect Normal
Contact outputs disabled
Normal
On Controlled by forcing features
Range: Normal, Open, Closed
Range: Normal, Open, Closed

Range: Normal, Open, Closed
M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
FlexLogic operand
TEST MODE FORCING
TEST MODE FORCING