HA243821
Issue 5 Mar 98
Section 2
Page 2 - 1
MODEL 346 INSTALLATION AND OPERATION MANUAL
SECTION 2 INSTALLATION
LIST OF CONTENTS
Section
Page
2.1 UNPACKING ...................................................................... 2 - 3
2.1.1 CHASSIS REMOVAL .............................................................. 2 - 3
2.2 MECHANICAL INSTALLATION ............................................. 2 - 4
2.3 ELECTRICAL INSTALLATION ................................................. 2 - 5
2.3.1 SUPPLY VOLTAGE WIRING ..................................................... 2 - 6
2.3.2 SIGNAL WIRING .................................................................. 2 - 6
THERMOCOUPLE INPUTS ................................................. 2 - 6
DIRECT VOLTAGE INPUTS UP TO 5 VOLTS DC .................... 2 - 6
ATTENUATED DC VOLTAGE INPUTS ABOVE 5 VOLTS .......... 2 - 7
RTD (RESISTANCE TEMPERATURE DETECTOR) INPUTS ......... 2 - 7
CONTACT INPUT (EVENT) CONNECTIONS ....................... 2 - 7
CURRENT INPUTS (RECORDER SUPPLY) .............................. 2 - 8
CURRENT INPUTS (EXTERNAL SUPPLY) ............................... 2 - 8
2.4 CIRCUIT BOARD LINKS ....................................................... 2 - 9
2.4.1 INPUT CHANNEL CONFIGURATION RULES ............................ 2 - 10
2.4.2 CHANNEL THERMOCOUPLE / RTD LINK ................................. 2 - 10
2.4.3 THERMOCOUPLE FAILSAFE (UP - DOWN) LINKS ...................... 2 - 10
2.4.4 CJC LINK .............................................................................. 2 - 10
2.4.5 CIRCUIT BOARD LOCATION .................................................. 2 - 11
OPTION BOARD TYPES .................................................... 2 - 11