Instruction Manual
Input/Output Circuit Description
2-5
Termination
Panel
Primary Control Board
Backup Control Board
200 Volt
Common-mode
Amplifier
Programmable
Gain Amplifier
To ADC
Analog
Switch
To ADC
200 Volt
Common-mode
Amplifier
Programmable
Gain Amplifier
Analog
Switch
4-20 MA
Input
Termination
Panel
24 VDC
100V
100V
Switch
1A
Primary Control Board
250
OHM
24 VDC
+V
100V
Backup Control Board
Programmable
100V
To ADC
1A
X2
Analog
1A
To ADC
X2
1A
250
OHM
Two-Wire
Transmitter
Input
Gain Amplifier
Voltage
Regulator with
short-circuit
protection
Voltage
Regulator with
short-circuit
protection
Switch Programmable
Analog
Gain Amplifier
Analog Current
Input
Two-Wire
Transmitter Input
FIGURE 2- 3
FIGURE 2- 2