Watlow PPC-2000 - Manual (Page 73)

PPC-2000 User’s Guide Chapter 2: Hardware Installation
Doc.# 30002-00 Rev 2.3 Watlow Anafaze 49
Table 2.14 Power Connections on AITB
NOTE! The Ref voltage is provided for special sensor types.
Do not use this voltage without consulting Watlow
Anafaze.
Connecting Thermocouples
NOTE! Connect thermocouple shields directly to a good
frame or chassis ground. Connect thermocouple
shields at one end only, either near the terminal board
or the sensor end.
A thermocouple is connected in a differential configuration by
wiring the positive signal lead to the
A terminal of the proper
input and the negative signal lead to the B terminal of the
same input. The designators are located on the terminal block
cards near each screw terminal. See Figure 2.31.
Figure 2.31 Thermocouples Connected to
Differential Inputs 1 and 2
Voltage AITB Terminals
10.00V Ref Ref (4 PL.)
Analog Common Com (8 PL.)
shield
(if present) frame ground
1A (input 1+)
1B (input 1-)
+
-
shield
(if present) frame ground
2A (input 2+)
2B (input 2-)
+
-
AITB