Rockwell Automation T6050 SurgeGard Incipient Surge-Conditioning Module - Manual (Page 14)

ICS Triplex Turbo Machinery Control
PD-6050 Dec 04 4
A block diagram of the hardware is shown in the figure below.
ANALOG
INPUT
Current
or Voltage
DIFFER-
ENTIAL
AMPLIFIER
FILTER GAIN
ABSOLUTE
VALUE
PEAK
DETECTOR
VOLTAGE
TO
CURRENT
CONVERTER
ANALOG
OUTPUT
4-20mA
DC TO DC
CONVERTER
LOOP POWER
(22-32VDC)
4-20mA
TO ANTI-SURGE
CONTROLLER
CURRENT
OR VOLTAGE
FROM FLOW
TRANSMITTER
AC SIG
AC SIGNAL
OUT
Figure 2. Hardware Block Diagram