Chapter 2. Installation
TransPort
®
PT900 User’s Manual 37
2.6.4 Connecting the Analog Inputs and Output
The PT900 provides one 0/4-20 mA analog current output and two 4-20 mA analog
inputs, with a switchable 16 V supply for loop-powered temperature transmitters.
Connect the analog inputs and output as shown in Figure 46 on page 36 (see the
cable to the left). The pin numbers for the connector and the color code for the
standard input/output cable are shown in Table 2 below.
Important: The Analog Output is an active mode type. Do not supply a 24V
supply to this circuit, as the circuit is powered by the transmitter.
2.6.5 Connecting the Energy Cables
The AIO port is commonly used for connecting a pair of energy cables to permit
energy measurements (see Figure 47 below).
Figure 47: Energy Cable Connection (Right Side)
Table 2: AIO Cable Wiring Diagram
Connection Pin # Color Description
Aout+ 1 Red 4-20mA OUTPUT
Aout- 2 Black 4-20mA RETURN
16VDC 3 Blue +16VDC OUTPUT
ARTN 4 Yellow ANALOG INPUTS RETURN
AIN1 5 Orange ANALOG INPUT 1
AIN2 6 Green ANALOG INPUT 2
SHD 7 Silver Cable Shield
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