PowerFlex Digital DC Drive User Manual -
Publication 20P-UM001C-EN-P - July 2008
C-6
Application Notes
Using a DC Contactor Only
1. Set parameter 1391 [ContactorControl] to "Contactor" (default value).
2. Set one [Relay Out x Sel] parameter and one [Digital Inx Sel] parameter
to "Contactor" (default value for parameters 1392 [Relay Out 1 Sel] and
140 [Digital In8 Sel]).
3. Connect the DC contactor auxiliary (status) contact to a second digital
input.
4. Set the corresponding second [Digital Inx Sel] parameter (133-144) to
"Fld Weak En".
5. Set the corresponding [Inversion In x] parameter (1276-1283 or
1387-1390) for the second digital input to "Enabled".
Using a DC Contactor and a Dynamic Brake
1. Set parameter 1391[ContactorControl] to "CoDB".
2. Set one relay output parameter (1392 [Relay Out 1 Sel] or 629 [Relay
Out 2 Sel]) to "Contactor" and the other relay output parameter 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".
Using an Inverting Fault Device Only
1. Connect the inverting fault device contact to two separate digital inputs.
If using two inverting fault devices, the device contacts must be wired in
series.
2. Set one corresponding [Digital Inx Sel] parameter (133-144) to 35 - “Fld
Weak En”.
3. Set the other corresponding [Digital Inx Sel] parameter (133-144) to 14 -
"Aux Fault".
4. Set both of the corresponding [Inversion In x] parameters (1276-1283 or
1387-1390) to 1 - “Enabled”.
