Power connections, Wiring the power supply, Power connections 23 – Watlow Series D8 User Manual
Page 41: Wiring the power supply 23, Figure 2.11—d8 series controller with tb50 23

Series D8 User’s Guide
Chapter 2: Installation
Doc. 0600-3120-2000
Watlow Anafaze
23
The best way to avoid ground loops is to minimize unneces-
sary connections to ground. Do not connect any of the follow-
ing terminals to earth ground:
•
Power supply dc common
•
TB1 terminals 9, 10, 19 (analog common)
•
TB2 terminal 2 (dc power common)
Do not connect the analog common terminals to the other ter-
minals listed above.
Power Connections
This section explains how to make power connections to the
D8 and the TB50.
Figure 2.11 D8 Series Controller with TB50
Wiring the Power Supply
WARNING!
Use a power supply with a Class 2 rating
only. UL approval requires a Class 2 power
supply.
Connect power to the controller before any other connections,
This allows you to ensure that the controller is working before
any time is taken installing inputs and outputs.
CONNECTOR
DEVICENET
NETWORK LED
INDICATOR LIGHT
MODULE LED
INDICATOR LIGHT
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