ESD 92 Series - 6.2 Schematic for ESD 9223

6.2 Schematic & Connection Diagram for ESD 9223
CONTROL - Red LED's for Relay
Status
SET - Potentiomenters for
setpoint adjust
PRESS - Press Switches to
read set values
DISPLAY - 12.5 mm 7 segment
RED LED
VSEN1/ VSEN2 - ‘Sensitivity’
adjust Potentiometers
SPAN - ‘Span’ adjust
Potentiometer
ZERO - ‘Zero’ adjust
Potentiometer
IC1 - Amplifier
IC2 - Comparator
RL1, RL 2 - 12 V DC Relays
Pt-100 (3 WIRE RTD)
TC - THERMOCOUPLE
E
N P
NC
P
NO NC
P
NO
C
C
R
R
C1 C2
1 2 3 4 5 6 7 8 9
SUPPLY
VOLTAGE
10
11
12
Pt 100
+
TC
Relay 1
Relay 2
2ii
Display board
ESD - 9223DPM-R1
CONTROL SET PRESS
DISPLAY
10 Pin connector
Secondary
Sensitivity
Span
Zero
Transformer
ESD - 189
Relay2
Relay
Sensor
Primary
Backcard
ESD - 9223BK-R2
E N P NC P NO R G B
Relay1
NC P NO
Mother board
ESD - 9223MB-R2
TB - PBT Terminal board
TB
User Terminals
1 2 3 4 5 6 7 8 9 10 11 12