GE 339

6–158 339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
S5 INPUTS/OUTPUTS CHAPTER 6: SETPOINTS
Critical Failure Relay #7 - Input/Output “E”
When the SWITCHING DEVICE is selected as contactor, the Critical Failure Relay behaves in
the same way as when the SWITCHING DEVICE is selected as BREAKER.
Output relays Input/Output “R”
The 339 relay with INPUT/OUTPUT option ‘R’ is equipped with four electromechanical
output relays: three form C relays (Relay 1, Relay 3, Relay 4), and one form A relay (Relay 2).
Depending on the setting
S2 SYSTEM SETUP > SWITCHING DEVICE, these output relays
function differently with respect to the application of BREAKER and CONTACTOR.
Figure 6-71: Trip and Start Inhibit Output Relay Logic – INPUT/OUTPUT Option ‘R’
SEAL-IN TIME
SET TIN G
0
RELAY 1 TRIP
AND
SET TIN GS
Off=0
Input
BLOCK RLY1 TRIP
RELAY 1 TRIP
Block Trip Input
S
R
LATCH
SET TIN G
Breaker
Contactor
SWITCHING DEVICE
SYSTEM SETUP
AND
AND
t
LOGIC OPERAND
ANY ALARM PKP
ANY ALARM OP
ANY LATCHED ALARM OP
ANY TRIP PKP
LOGIC OPERAND
Any Trip OP
AND
AND
AND
AND
OR
AND
S
S
R
R
LATCH
LATCH
OR
OR
LED: Trip
LED: Pickup
LED: Alarm
Operate Output Relay 1 (Contactor Trip)
Operate Output Relay 1
(Breaker Trip)
896847.cdr
AND
AND
INPUTS
Emergency Restart Input
Lockout Reset Input
SET TIN GS
SET TIN GS
SET TIN GS
Off=0
Operate = 1
Self-Reset
Lockout Reset
Latched
Off=0
Emergency Restart
OUTPUT RELAY 3
OUTPUT TYPE
S4 CONTROLS
S4 START INHIBIT
S5 RLY3 AUXILIARY
Remote Reset Input
Remote Reset
Off=0
AND
OR
KEYPAD RESET
OR
Locally open breaker (relay keypad)
Remote open breaker
ANY START INHIBIT
LED: Start Inhibit
Operate Output Relay 3
(Start Inhibit)