Rockwell Automation 20D PowerFlex 700S with Phase I Control Reference Manual - Manual (Page 47)

Rockwell Automation Publication PFLEX-RM002D-EN-E - August 2013 47
Detail Drive Configuration and Operation Chapter 1
The [Relay x Data] parameter and [Dig Out x Data] parameters are linked to a
parameter used to turn on the digital output.
The [Relay x Bit] parameter and [Dig Out x Bit] parameters select which bit of
the data you wish to use to turn on the digital output.
Configuration Example
This example configures Digital Output 1 for “Enabled.” “Enabled” indicates the
inverter section of the drive is active (IGBTs switching).
• [Dig Out 1 Data] is linked to [Logic Status]
• [Dig Out 1 Bit] is set to 0
When the “Enabled” bit of [Logic Status] turns on, Digital Output 1 turns on.
Digital Output Status Bits
[Local I/O Status], bits 16…18 indicate the status of the digital outputs and can
be used for troubleshooting the digital outputs. The bits are broken down as
follows:
• Bit 16 - “Digital Output 3” (Output Relay)
• Bit 17 - “Digital Output 1” (Aux Out 1)
• Bit 18 - “Digital Output 2” (Aux Out 2)
When the bit in [Local I/O Status] associated with the digital output is set (=1),
the digital output is turned on. When the bit associated with the digital output is
not set (=0), the digital output is turned off.
Direction Control and Bipolar
Reference The direction of rotation of the motor can be controlled by a forward/reverse
command or by the use of a bipolar signal. Parameter 153 [Control Options] bit
0 - “Bipolar Sref ” selects this option.
When this bit is enabled (1) a bipolar speed reference is used. In bipolar reference
mode, Par 40 [Selected Spd Ref ] indicates both the speed magnitude and the
direction: Positive speed reference values (+) = forward direction and negative
speed reference values (–) = reverse direction. When this bit is disabled a
unipolar speed reference is used. In unipolar mode, the speed reference is limited
to a minimum value of zero (0), shown by the Max selection block (as shown in
the diagram below). In this case Par 40 [Selected Spd Ref ] supplies only the
speed magnitude. The direction is determined by Par 153 [Applied LogicCmd]
bits 20 “UniPol Fwd” and 21 “UniPol Rev”. The forward/reverse direction