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4

Dynamic Braking Kit for FlexPak Plus and MinPak Plus DC Drives

Step 6. For non-regenerative FlexPak Plus DC drives with a Reversing Contactor: Connect the dynamic 

braking resistor between the corresponding normally closed (

NC

) contacts on the forward contactor 

and the reversing contactor. For example, connect the resistor between terminal 8 on the forward 
contactor and terminal 8 on the reverse contactor. This places the resistor across the motor’s 
armature (A1 and A2) when both contactors are de-energized. Refer to figures 3 and 4.

Figure 2 – Dynamic Braking Resistor Schematic for Regenerative Drives

and Non-Regenerative Drives Without a Reversing Contactor

A1 (+)

Forward

Contactor

Forward

Contactor

A2 (–)

47

Forward

Contactor

Dynamic Braking

Resistor

Forward

Contactor

DB 1

DB 2

DC

Motor

45/52

Armature

Summary of Contents for 14C214

Page 1: ...ding brake It will not hold the motor shaft in place It will not prevent the motor from turning once motion has stopped The Dynamic Braking kit must be rated for the drive s horsepower and voltage rating as shown in table 1 Refer to your drive s nameplate for the horsepower and voltage rating The Dynamic Braking kit contents are also listed in table 1 ATTENTION Only qualified electrical personnel ...

Page 2: ...Use the two mounting screws provided Step 5 For all regenerative FlexPak Plus DC drives and for non regenerative FlexPak Plus DC drives without a Reversing Contactor Connect the dynamic braking resistor between the normally closed NC contacts of the drive s M contactor terminals 7 and 8 This places the resistor across the motor s armature A1 and A2 when the M contactor is de energized Refer to fig...

Page 3: ...k Plus DC Drives 3 Figure 1 Dynamic Braking Resistor Connections for Regenerative FlexPak Plus Drives and Non Regenerative FlexPak Plus Drives Without a Reversing Contactor 7 5 3 M Contactor or Forward Contactor 4 8 6 A1 A2 Dynamic Braking Resistor ...

Page 4: ...e connect the resistor between terminal 8 on the forward contactor and terminal 8 on the reverse contactor This places the resistor across the motor s armature A1 and A2 when both contactors are de energized Refer to figures 3 and 4 Figure 2 Dynamic Braking Resistor Schematic for Regenerative Drives and Non Regenerative Drives Without a Reversing Contactor A1 Forward Contactor Forward Contactor A2...

Page 5: ...Pak Plus DC Drives 5 Figure 3 Dynamic Braking Resistor Connections for Non Regenerative FlexPak Plus Drives With a Reversing Contactor 0 RQWDFWRU RU RUZDUG RQWDFWRU 5HYHUVLQJ RQWDFWRU XPSHU QDPLF UDNLQJ 5HVLVWRU XPSHU XPSHU XPSHU 7R 0RWRU UPDWXUH ...

Page 6: ...tep 10 Apply power and test the braking capability of the drive This completes installation of the Dynamic Braking kit for FlexPak Plus DC drives Figure 4 Dynamic Braking Resistor Schematic for Non Regenerative Drives with a Reversing Contactor ATTENTION If a reversing contactor is installed ensure jumper J9 is removed from the Regulator board near the top of board Failure to observe this precauti...

Page 7: ...e dynamic braking resistor to the normally closed NC contacts of the drive s M contactor These contacts are to the rear of the M contactor This places the resistor across the motor s armature when the M contactor is de energized Refer to figures 2 and 5 Step 9 For non regenerative MinPak Plus DC drives with a Reversing Contactor Connect the dynamic braking resistor between corresponding normally c...

Page 8: ... Printed in USA Figure 5 Dynamic Braking Resistor Connections for MinPak Plus Drives Without a Reversing Contactor Figure 6 Dynamic Braking Resistor Connections for MinPak Plus Drives With a Reversing Contactor 0 RQWDFWRU QDPLF UDNLQJ 5HVLVWRU 0 RQWDFWRU 5HYHUVLQJ RQWDFWRU QDPLF UDNLQJ 5HVLVWRU ...

Page 9: ......

Page 10: ...nical Support Tel 1 262 512 8176 Fax 1 262 512 2222 Email support drives ra rockwell com Online www ab com support abdrives Publication D2 3378 November 1998 Copyright 1998 Rockwell Automation Inc All Rights Reserved ...

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