Watlow PPC-2000 - Manual (Page 70)

Chapter 2: Hardware Installation PPC-2000 User’s Guide
46 Watlow Anafaze Doc.# 30002-00 Rev 2.3
Sensor Keys
Sensor keys with built-in jumpers or resistors are used to
customize the AITB for various sensor types. Insert the
appropriate key in the socket provided on the AITB. See Table
2.11 for a description of the various keys. There are two rows of
eight key sockets. Each socket location is labeled IN1 to IN16
which correlate with each Analog In or High Isolation Analog
input address. Keys should be inserted with the component
side facing the terminal blocks. Figure 2.29 illustrates key
installation.
Figure 2.29 Inserting Sensor Keys in AITB
Table 2.11 Sensor Keys
Key Color Sensors
Used
with
TC None TC and Voltage All
RTD Red
2-Wire or 3-Wire
Platinum 100
Ω RTD
2021
2024
2025
Differential
Current
Blue 0-20mA
2021
2024
2025
Single-Ended
Current
Black 0-20mA 2022
keys
(component
side of keys face
terminal blocks)