25
Channel 1
I/O Board Part Number
Notes:
Identify P/N 191912 I/O Board and connect wires to
the terminal blocks directly below the I/O slot that
the board is in.
Use the wiring label located on the front panel that
has a matching I/O part number.
Either channel can support any of the sensor types
listed.
For 3-wire or 4-wire transmitters that require in
excess of 1.5w, use an external power supply. Or
install an auxiliary power board and connect power
wires to the Auxiliary VDC power terminal block. For
3-wire transmitters, a jumper wire between COM(-)
on the input board terminal block and PWR- on the
Auxiliary Power terminal block is required.
To program the analog input, go to the Inputs menu,
enter the menu for the I/O slot# and channel# (for
example S21). Scroll to Transmitter and select the
type of transmitter from the list.
Channel 2
P/N 191912
4-20 mA INPUT (2)
TBxA - INPUTS 1-2
TBxB - NOT USED
1
2
+24V
+24V
+24V
+24V
+24V
+24V
COM(–)
COM(–)
24V(–)
24V(–)
XMTR–
XMTR– XMTR+
XMTR+
XMTR–
XMTR+
XMTR–
XMTR– XMTR+
XMTR+
XMTR–
XMTR+
TB
Ch
4 Wire
3 Wire
2 Wire
Pwrd
2 Wire
Loop
1
3
5
7
9
10
11
12
13-18
2
4
6
8
Shields
I/O Board Part Number
P/N 191912
4-20 mA INPUT (2)
TBxA - INPUTS 1-2
TBxB - NOT USED
1
2
+24V
+24V
+24V
+24V
+24V
+24V
COM(–)
COM(–)
24V(–)
24V(–)
XMTR–
XMTR– XMTR+
XMTR+
XMTR–
XMTR+
XMTR–
XMTR– XMTR+
XMTR+
XMTR–
XMTR+
TB
Ch
4 Wire
3 Wire
2 Wire
Pwrd
2 Wire
Loop
1
3
5
7
9
10
11
12
13-18
2
4
6
8
BLK
RED
LITTLE DIPPER 2
Channel 1
Channel 2
Shields
I/O Board wiring labels
I/O Boards 1 through 4
I/O Board 1-4
Terminal Blocks
I/O Board P/N
Identification Labels
Auxiliary
VDC Power
Option Board
Auxiliary
VDC Power
Terminal Block
PYXIS ST-500
2 WIRE
LOOP POWERED
TRANSMITTER
+
–
UNPOWERED
4-20mA SOURCE
•
SIMULATOR
•
POWERED 4-20mA
OUTPUT
POWERED 2 WIRE
+
–
3 WIRE
TRANSMITTER
24V POWER
UNPOWERED
+ SIGNAL
– COMMON
4 WIRE TRANSMITTER
- SIGNAL
+ SIGNAL
+24V POWER
–24V POWER
UNPOWERED
BRN
ORN
1
2
3
4
5
6
7
8
9
10
11
12
1
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
10
11
12
1
13
14
15
16
17
18
BLK
RED
GRN
WHT
Figure 10 Part Number 191912 Dual Analog (4-20mA) Sensor Input Board Wiring