Watlow PPC-2000 - Manual (Page 77)

PPC-2000 User’s Guide Chapter 2: Hardware Installation
Doc.# 30002-00 Rev 2.3 Watlow Anafaze 53
Figure 2.36 Connecting Linear Voltage Signals to
Single-ended Inputs 1 and 2
Connecting Sensors with Linear Current Signals
Differential current transducers or sensors should be
connected with the positive signal lead on the
A terminal and
the negative signal lead to the B terminal for the selected
input. See Figure 2.37.
Figure 2.37 Connecting Current Inputs to a
Differential Input Module:
Input 1, 2, and 3 Shown
Single-ended current sources should be have the positive lead
on the positive terminal of the desired input. The negative lead
should be connected to the
COM terminal. See Figure 2.38 on
page 54.
1A (input 1+)
A COM
2A (input 2+)
+
-
+
-
Transducer
with linear
voltage
output
Transducer
with linear
voltage
output
AITB
Typical
2-wire
current
transmitter
Typical
3-wire
current
sinking
transmitter
10 V Max
+ power 3A(Input 3+)
2A(Input 2+)
2B(Input 2-)
I
I
I
1A(Input 1+)
1B(Input 1-)
– power
Analog Com (optional)
+ power
28V Max
–
+ power
28V Max
Power
Supply
+
–
Typical
3-wire
current
source
transmitter
out
3B(Input 3-)