Watlow CPC400 - Manual (Page 44)

Chapter 2: Installation CPC400 Series User’s Guide
30 Watlow Anafaze Doc. 0600-2900-2000
Reference Voltage Terminals
The +5V Ref and Ref Com terminals are provided to power
external bridge circuits for special sensors. Do not connect
any other type of device to these terminals.
Voltage Input Connections
Voltage input requires scaling resistors. Special input re-
sistors installed at Watlow Anafaze divide analog input
voltages such that the controller sees a -10 to 60 mV signal
on the loop.
Figure 2.17 Voltage Signal Connections
Current Input Connections
Current input requires scaling resistors. Special input re-
sistors installed at Watlow Anafaze for analog current sig-
nals are such that the controller sees a -10 to 60 mV signal
across its inputs for the loop.
Figure 2.18 Current Signal Connections
CH IN+
CH IN-
Device with
Output
Voltage
CH IN+
CH IN-
Device with
Current
Output