OVERVIEW
4. SETPOINT PROGRAMMING
4-2
4.1.2
RELAY ASSIGNMENT PRACTICES
There are six output relays. Five of the relays are always non-failsafe, the other (Service) is failsafe and dedicated to enunciate internal
SR469 faults (these faults include Setpoint Corruption, failed hardware components, loss of control power, etc.). One of the output relays
is dedicated as the Block Start relay; it is dedicated to features that are intended to block motor starting. The four remaining relays may
be programmed for different types of features depending on what is required. One of the relays, R1 TRIP, is intended to be used as the
main trip relay. Another relay, R4 ALARM, is intended to be used as the main alarm relay. The two relays that are left, R2 AUXILIARY
and R3 AUXILIARY, are intended for special requirements.
When assigning features to R2 and R3, it is a good idea to decide early on what is required since features that may be assigned may
conflict. For example, if R2 AUXILIARY is to be used for upstream trips, it cannot also be used for the control of a Reduced Voltage
Start. Similarly, if R3 is to be dedicated as a relay to echo all alarm conditions to a PLC, it cannot also be used strictly to enunciate a
specific alarm such as Undercurrent.
In order to ensure that conflicts in relay assignment do not occur, several precautions have been taken. All trips with the exception of the
Short Circuit Backup Trip default to R1 TRIP output relay. All alarms default to the R4 ALARM relay. Only special control functions are
defaulted to the R2 and R3 AUXILIARY relays. It is recommended that these assignments be reviewed once all the setpoints have been
programmed.
Summary of Contents for SR469
Page 7: ......
Page 19: ...2 INSTALLATION MECHANICAL 2 5 2 1 5 TERMINAL LOCATIONS Figure 2 11 TERMINAL LAYOUT...
Page 21: ...2 INSTALLATION ELECTRICAL 2 7 Figure 2 12 TYPICAL WIRING DIAGRAM...
Page 32: ...ELECTRICAL 2 INSTALLATION 2 18 2 2 14 TYPICAL 2 SPEED MOTOR WIRING...
Page 39: ...OVERVIEW 3 SR469 OPERATION 3 6 yy SETPOINTS yy S1 SR469 SETUP...
Page 104: ...4 SETPOINT PROGRAMMING S11 MONITORING 4 65 Figure 4 24 TRIP COIL SUPERVISION...
Page 113: ...S12 ANALOG I O 4 SETPOINT PROGRAMMING 4 74...
Page 244: ...8 469PC PROGRAM WAVEFORM CAPTURE 8 13 Figure 8 11 WAVEFORM CAPTURE...