ALLEN-BRADLEY ALLEN-BRADLEY BULLETIN 1336 OUTPUT CONTACTOR APPLICATION NOTE #10 January 2, 1997 PURPOSE The purpose of this document is to provide guidelines for wiring and control schemes for the Bulletin 1336 AC Drive. This document is to be used as a suggestion only. Users must ensure that installations meet applicable codes and are suitable for the existing conditions. The Bulletin 1336 User Manual should be used as a reference to ensure that proper wire selection,routing,and fusing guidelines are followed. WHAT THIS NOTE CONTAINS Suggested guidelines for applying an Output Contactor to a Bulletin 1336. The Output Contactor may also be utilized as part of an E-STOP circuit. Refer to application note #4 1336 E-STOP CIRCUITRY for additional information. INTENDED AUDIENCE This application note is intended to be used by personnel familiar with the hardware components and programming procedure necessary to operate the Bulletin 1336/1336VT. WHERE IT IS USED The diagrams, parameter settings, and auxiliary hardware used in this application note are designed to address specific issues in many different applications. Some changes by the Users may be necessary to apply the concepts of this document to a specific application. TERMS AND DEFINITIONS The Output Contactor (2K) is an electromechanical device wired between the adjustable frequency drive and the AC motor. 1 ALLEN-BRADLEY DESCRIPTION The Output Contactor is used where it is desired to electrically isolate the drive from the motor, primarily during servicing of the motor. An ALLEN-BRADLEY Bulletin 100 (IEC) or Bulletin 500 (NEMA) contactor is recommended. Figure 1 illustrates the coordination of the Output Contactor with the drive fault contact. Drive start/stop operation must ensure that 2K is energized prior to initiating a start command. The drive fault contact ensures that the drive output is off before opening the Output Contactor. Figure 2 utilizes a timer circuit to interrupt power to the Output Contactor. This is useful for applications that have RAMP-TO-STOP or DC INJECTION BRAKING, Parameter 10 set to a value of 1 or 2. The time delay should be set to a value greater than the DECEL TIME or the INJECTION BRAKE TIME. This will ensure that the drive output is off prior to opening the contactor. Figure 3 uses the start command to energize the Output Contactor and the RUN contact to hold-in the contactor until the drive output is off. This scheme is useful for the controlled stop modes of operation. APPLICATION CONSIDERATIONS The output contactor should be closed before the drive begins to run and should open after the drive has been stopped. If not operated this way voltage transients sent back to the drive can do one or all of the following...... 1. Cause the drive to fault on over current. 2. Cause the drive to fault on over voltage. 3. Degrade the life of the drive. See the schematics on the following pages for a suggested wiring schemes for the output contactor. Notice that the contactor is never closing or opening while the drive is running. For 3-wire start/stop control refer to application note #8 2-WIRE & 3-WIRE START/STOP WITH MOD-L1,L2,L3. For use on ungrounded 120V AC systems refer to application note #12, 120V AC INTERFACE GROUNDED/UNGROUNDED. 2 ALLEN-BRADLEY OUTPUT CONTACTOR WITH FAULT CONTACT CONTROL 460V AC 48-62HZ L1 L2 L3 115V AC TB1 TB2 1 POT HIGH 2 POT WIPER BULLETIN 1336 3 POT/SIGNAL COMMON 4 5 0-10V INPUT 6 4-20MA INPUT 7 PULSE INPUT (-) J2 8 PULSE INPUT (+) 9 5V METER OUTPUT 10 AT SPEED 11 AT SPEED/RUN COMMON 12 RUN 13 FAULT 14 FAULT/NOT FAULT COMMON 15 NOT FAULT 16 ALARM 17 ALARM/NOT ALARM COMMON 18 NOT ALARM 2K MOD-L3 TB3 115VAC INTERFACE 19 START 20 STOP 21 COMMON 22 JOG 23 REVERSE 24 SW1 25 COMMON 26 SW2 27 SPEED SELECT 28 AUX 29 COMMON 30 ENABLE START/STOP CUSTOMER INTERLOCK CUSTOMER INTERLOCK TB1 M1 M2 M3 GND 2K FIGURE #1 MOTOR 3 ALLEN-BRADLEY OUTPUT CONTACTOR WITH TIMER CONTROL 460V AC48-62HZ L1 L2 L3 115V AC TB1 1TR START/STOP 2K 1TR TB2 1 POT HIGH 2 POT WIPER BULLETIN 1336 3 POT/SIGNAL COMMON 4 5 0-10V INPUT 6 4-20MA INPUT 7 PULSE INPUT (-) 8 PULSE INPUT (+) 9 5V METER OUTPUT 10 AT SPEED 11 AT SPEED/RUN COMMON 12 RUN 13 FAULT 14 FAULT/NOT FAULT COMMON 15 NOT FAULT 16 ALARM 17 ALARM/NOT ALARM COMMON 18 NOT ALARM TB3 1TR J2 MOD-L3 115VAC INTERFACE 19 START 20 STOP 21 COMMON 22 JOG 23 REVERSE 24 SW1 25 COMMON 26 SW2 27 SPEED SELECT 28 AUX 29 COMMON 30 ENABLE 2K CUSTOMER INTERLOCK CUSTOMER INTERLOCK TB1 M1 M2 M3 GND 2K MOTOR FIGURE #2 4 ALLEN-BRADLEY OUTPUT CONTACTOR WITH RUN CONTACT CONTROL 460V AC48-62HZ L1 L2 L3 115V AC TB1 2K START/STOP 4K TB2 1 POT HIGH 2 POT WIPER BULLETIN 1336 3 POT/SIGNAL COMMON 4 5 0-10V INPUT 6 4-20MA INPUT 7 PULSE INPUT (-) J2 8 PULSE INPUT (+) 9 5V METER OUTPUT 10 AT SPEED 11 AT SPEED/RUN COMMON 12 RUN 13 FAULT 14 FAULT/NOT FAULT COMMON 15 NOT FAULT 16 ALARM 17 ALARM/NOT ALARM COMMON 18 NOT ALARM 4K TB3 START/STOP MOD-L3 115VAC INTERFACE 19 START 20 STOP 21 COMMON 22 JOG 23 REVERSE 24 SW1 25 COMMON 26 SW2 27 SPEED SELECT 2K CUSTOMER INTERLOCK CUSTOMER INTERLOCK 28 AUX 29 COMMON 30 ENABLE TB1 M1 M2 M3 GND 2K MOTOR FIGURE #3 5