Watlow Series 922 Retrofit - Manual (Page 38)

30
WATLOW Series 922 User's Manual How to Install and Wire, Chapter 4
Figure 19 -
Input Option
"3", "A", or "B"
T/C and Process,
Wiring Diagram.
Chart
Recorder
(Optional)
Retransmit Common
Retransmit Output
-
+
8
7
6
5
4
2
3
1
S1
S2
S3
Process
Process
Input Option "3", Terminals 1 - 8
Model # 922A - 3 _ _ 0 - _ 000
Model # 922A - A _ _ 0 - _ 000
Model # 922A - B _ _ 0 - _ 000
Input Options "2" & "7", Terminals 1 - 8
Model # 922A - 2 _ _ 0 - _ 000 &
Model # 922A - 7 _ _ 0 - _ 000
+
-
0 - 5V, 4 - 20mA input
0 - 5V, 4 - 20mA input
Channel 1
Channel 2
Figure 18 -
Input Options
"2" & "7",
RTD/Process,
Wiring Diagram.
NOTE: For a two-
wire RTD - Channel
1:Use Terminals 6
and 7 for RTD, and
jumper Terminal 8 to
Terminal 7.
Wire Input
NOTE: Jumper
terminal 4 to 5 only
when using 4-20mA
input.
8
7
6
5
4
2
3
1
Process
Channel 1
Process
Retransmit Output
Retransmit Common
Chart
Recorder
(Optional)
+
-
T/C -
T/C +
+
-
Channel 2
0 - 5V, 4 - 20mA input
0 - 5V, 4 - 20mA input
RTD
Input Impedance:
4-20mA = 250
0-5V = 100K