Metek TWRF1 SCR Series, Instruction, Operation And Maintenance Manual

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TWRF1 SCR Power Controller Table of Contents
Rev 2 Ametek HDR Power Systems iii
TABLE OF CONTENTS
Par. Title Page
ILLUSTRATIONS
Figure 2.1 Thermostat Connections ..................................................................................................................... 8
Figure 2.2 Isolated/Non-Isolated Switches .......................................................................................................... 8
Figure 2.3 T1 Transformer Connections .............................................................................................................. 9
Figure 3.1 Control Panel .................................................................................................................................... 11
Figure 3.2 Remote Control with a Potentiometer ............................................................................................... 12
Figure 3.3 Process Controller Input Connections .............................................................................................. 13
Figure 3.4 Auto/Man Control with Controller and Remote Potentiometer ......................................................... 13
Figure 3.5 On/Off Control ................................................................................................................................... 14
Figure 3.6 Shutdown Control ............................................................................................................................. 14
Figure 3.7 Current Limit/Trip Board ................................................................................................................... 15
Figure 4.1 AC Switch and SCR On-time ............................................................................................................ 17
TABLES
Table 1.1 kVA vs. Impedance .............................................................................................................................. 4
Table 1.2 TWRF1 Model Number Breakdown ..................................................................................................... 4
Table 1.3 General Specifications of TWRF1 Models ........................................................................................... 5
Table 2.1 Wire Size Information ........................................................................................................................... 7
Table 2.2 Transformer Voltage Wiring ................................................................................................................. 9
Table 5.1 Troubleshooting Chart (Symptoms and Solutions) ............................................................................ 21
Table 6.2 Torque Specifications ........................................................................................................................ 21
Table 6.1 TWRF1 Spare Parts List .................................................................................................................... 23