ALLEN-BRADLEY ALLEN-BRADLEY BULLETIN 1336 PLUS OUTPUT CONTACTOR APPLICATION NOTE #1336S - 10 May 19, 1997 PURPOSE The purpose of this document is to provide guidelines for wiring and control schemes for the Bulletin 1336S 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 1336S 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 1336S. The Output Contactor may also be utilized as part of an ALL-STOP circuit. Refer to application note #1336S-4, 1336S ALL-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 1336S. 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 User 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. Faxback Document #3030 Web location Http://WWW.AB.COM Page 1 of 5 ALLEN-BRADLEY DESCRIPTION The Output Contactor is used where it is desired to electrically isolate the drive from 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. 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 overcurrent. 2. Cause the drive to fault on overvoltage. 3. Degrade the life of the drive. The schematics on the following pages show suggested wiring schemes for the output contactor. Notice that the contactor is never closing or opening while the drive is running. Faxback Document #3030 Web location Http://WWW.AB.COM Page 2 of 5 ALLEN-BRADLEY FIGURE 1 OUTPUT CONTACTOR WITH FAULT CONTACT CONTROL R 115V AC S T GND TB1 1 POT HIGH 2 POT WIPER 3 POT COMMON 4 SIGNAL COMMON 5 0-10V INPUT 6 4-20ma INPUT 7 PULSE INPUT (-) 8 PULSE INPUT (+) 9 METER OUTPUT JUMPER J5 1-2 (4-20ma) 3-4 (0-10vdc) 10 CR1 11 CR2 12 13 CR3 (FAULT) 14 CR3 (NOT FAULT) 15 2K 16 CR4 17 CR4 18 TB3 START 2K L6E 115VAC INTERFACE TB3 19 START ENCODER B 31 20 STOP ENCODER A 32 21 COMMON ENCODER B 33 22 REVERSE ENCODER A 34 23 JOG +12VDC 35 24 AUXILIARY ENC COM 36 25 COMMON 26 SPD SEL 3 27 SPD SEL 2 28 SPD SEL 1 29 COMMON 30 ENABLE STOP EXT FAULT INTERLOCK CUSTOMER INTERLOCK INPUT MODE 2 TB1 U V W GND 2K Faxback Document #3030 Web location Http://WWW.AB.COM Page 3 of 5 ALLEN-BRADLEY FIGURE 1 OUTPUT CONTACTOR WITH TIMER CONTROL R 115V AC S T GND TB1 1 POT HIGH 2 POT WIPER 3 POT COMMON 4 SIGNAL COMMON 5 0-10V INPUT 6 4-20ma INPUT 7 PULSE INPUT (-) 8 PULSE INPUT (+) 9 METER OUTPUT JUMPER J5 1-2 (4-20ma) 3-4 (0-10vdc) 10 CR1 11 CR2 12 13 CR3 (FAULT) 14 CR3 (NOT FAULT) 15 1TD 2K 16 CR4 17 RUN 1TD CR4 18 TB3 1TD 2K L6E 115VAC INTERFACE TB3 19 START ENCODER B 31 20 STOP ENCODER A 32 21 COMMON ENCODER B 33 22 REVERSE ENCODER A 34 23 JOG +12VDC 35 24 AUXILIARY ENC COM 36 25 COMMON 26 SPD SEL 3 27 SPD SEL 2 28 SPD SEL 1 29 COMMON 30 ENABLE STOP EXT FAULT INTERLOCK CUSTOMER INTERLOCK INPUT MODE 2 TB1 U V W GND 2K Faxback Document #3030 Web location Http://WWW.AB.COM Page 4 of 5 ALLEN-BRADLEY FIGURE 1 OUTPUT CONTACTOR WITH RUN CONTACT CONTROL R 115V AC S T GND TB1 1 POT HIGH 2 POT WIPER 3 POT COMMON 4 SIGNAL COMMON 5 0-10V INPUT 6 4-20ma INPUT 7 PULSE INPUT (-) 8 PULSE INPUT (+) 9 METER OUTPUT JUMPER J5 1-2 (4-20ma) 3-4 (0-10vdc) 10 CR1 11 CR2 (RUN) 12 4K 13 CR3 (FAULT) 14 CR3 (NOT FAULT) 15 RUN 2K 16 CR4 17 4K CR4 18 TB3 2K L6E 115VAC INTERFACE TB3 19 START ENCODER B 31 20 STOP ENCODER A 32 21 COMMON ENCODER B 33 22 REVERSE ENCODER A 34 23 JOG +12VDC 35 24 AUXILIARY ENC COM 36 25 COMMON 26 SPD SEL 3 27 SPD SEL 2 28 SPD SEL 1 29 COMMON 30 ENABLE STOP EXT FAULT INTERLOCK CUSTOMER INTERLOCK INPUT MODE 2 TB1 U V W GND 2K Faxback Document #3030 Web location Http://WWW.AB.COM Page 5 of 5