Rockwell Automation 20P PowerFlex Digital DC Drive - Manual (Page 274)

274 Rockwell Automation Publication 20P-UM001I-EN-P - February 2013
Appendix C Application Notes
Using a DC Contactor, a Dynamic Brake and an Inverting Fault Device
(Firmware v1.006 Only)
DC Contactor and Dynamic Brake Configuration
1. Set parameter 1391[ContactorControl] to "Contactor+DB".
2. Set one [Relay Out x Sel] parameter (1392 [Relay Out 1 Sel] or 629 [Relay
Out 2 Sel]) to "Contactor" and the other relay output to "ContactorDB".
3. Set one [Digital Inx Sel] parameter to "Contactor" (default value for
parameter 140 [Digital In8 Sel]).
4. Connect the DC contactor auxiliary (status) contact to a second digital
input.
5. Set the corresponding second [Digital Inx Sel] parameter (133-144) to
"Fld Weak En".
6. Set the corresponding [Inversion In x] parameter (1276-1283 or 1387-
1390) for the second digital input to "Enabled".
Inverting Fault Device Configuration
1. Connect the inverting fault device contact to a digital input.
2. Set the corresponding [Digital Inx Sel] parameter (133-144) to 14 - "Aux
Fault".
3. Set the corresponding [Inversion In x] parameter (1276-1283 or 1387-
1390) to 1 - “Enabled”.
ATTENTION: If a dynamic brake resistor is used with one of the configurations
detailed above, dynamic braking stop time will be extended when the digital
input configured as 35 - “Fld Weak En” is asserted. Equipment damage and/or
personal injury may result if one of these configurations is used in an
inappropriate application. Do not use one of these configurations without
considering applicable local, national and international codes, standards,
regulations or industry guidelines.