Rockwell Automation 1397 DC Drive Firmware 2.xx - Manual (Page 17)

1–9 Introduction
Publication 1397-5.0 — June, 2001
The Drive is a 3 phase full-wave power converter without flyback
rectifier, complete with a digital current regulator and a digital speed
regulator for armature voltage or speed regulation by tachometer
feedback. Shown in Figure 1.2 is a block diagram of the 1397 Drive.
The Drive employs wireless regulator construction and uses a keypad
for Drive setup, including parameter adjustments and unit selection,
monitoring, and diagnostics. Reference, feedback, and metering
signals can be interfaced to the Drive. The Drive can be controlled
locally by the control device (HIM, GPT, DriveTools etc.) keypad or
remotely by using the terminals at the regulator board terminal strip.
SCANPORT
DRIVE CONTROL SIGNALS
AND SEQUENCING
FIELD
CONTROL
FIELD
POWER
SUPPLY
MOTOR FIELD
Regulator Board
Terminal Strip
SPEED
REFERENCE
SELECTION
AND
SCALING
DIGITAL
ANALOG &
FREQUENCY
INPUTS/OUTPUTS
OUTER
CONTROL
LOOP
(OCL)
SPEED
LOOP CURRENT
LOOP
I/O Expansion
Board
6 SCR
POWER
UNIT
MOTOR
ARMATURE
ANALOG
TACH
OR
PULSE
ENCODER
Speed Feedback
Armature Voltage Feedback
Armature
Current
Feedback
Figure 1.2
1397 Block Diagram
Optional
Arm R–Gen
6 SCR
Power Unit
CE Line
Filter
(Option)
CE Line
Inductor
Drive Description