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S5 INPUTS/OUTPUTS
NOTE:
NOTE
Output relays
6–152
SELECT DC VOLTAGE
Range: 17 V, 33 V, 84 V, 166 V
Default: 84 V
CONTACT INPUT 1
Range: Eighteen Characters
Default: 52a Contact
CONTACT INPUT 2
Range: Eighteen Characters
Default: 52b Contact
CONTACT INPUT X [3 to 10]
Range: Eighteen Characters
Default: Input X
DEBOUNCE TIME
↘
CONTACT INPUT X [1 TO 10]
Range: 1 to 64 ms in steps of 1 ms
Default: 2 ms
Each of the contact inputs can be named to reflect the function it represents within the
application. Up to 18 alpha-numeric characters are available for names.
The debounce time is used to discriminate between oscillating inputs. The state will be
recognized if the input is maintained for a period consisting of the protection pass plus the
debounce setting.
Contact Input 1 and Contact Input 2 are named by the factory as 52a and 52b respectively
and are used for monitoring the breaker open/close state when wired to the breakers
auxiliary contacts 52a and 52b.
The 339 relay is equipped with seven electromechanical output relays: 2 form A relays
(Relay 1 and Relay 2), and 5 form C relays (Relays 3 to 7). Depending on the setting
SYSTEM SETUP > SWITCHING DEVICE
application of BREAKER and CONTACTOR.
, these output relays function differently per the
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 6: SETPOINTS
S2
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