Rockwell Automation 1395 Digital DC Drive FRN 5-10.10/9.30 - Manual (Page 92)

Chapter 5
Functional Description
5-6
Field Sync and Firing Logic
The Phase Angle output from the Field Current Control is converted to a
time reference which is synchronized to the Line Sync signal from the
Armature Sync and Firing Logic to produce the gate firing pulses for the
SCRs.
Configuration Figure 5.2 shows an overview of the parameters associated with
configuration of the drive. The 1395 has been designed to accept control
input through the use of Adapter Boards. A portion of the drive control has
been designed to act as a black box from the point of view of external
devices. In order to perform the control functions required by the specific
application, it is necessary to configure various control and reference
information such as logic commands, speed reference and torque
reference. Additionally, for the external control equipment to monitor the
operating conditions in the drive (logic status, actual speed, actual armature
current etc.), configuration provides a way for this information to be
transferred to the external devices.
Sink Parameters
Several parameters associated with the control logic have been set aside
specifically for the task of receiving input information from external
control devices. These parameters are called “Sinks.” Figure 5.2
illustrates some of the Sink parameters used for input to the control logic.
Refer to Table 5.A. for a listing of Sink parameters.