Large Display Temperature Meters
Instruction Manual
3
Table of Contents
INTRODUCTION ----------------------------------------------------------------------- 7
Ordering Information ------------------------------------------------------------------------ 7
Model PD755 -------------------------------------------------------------------------------- 7
Model PD756 -------------------------------------------------------------------------------- 7
Model PD757 -------------------------------------------------------------------------------- 8
Accessories ---------------------------------------------------------------------------------- 8
Safety Notice ----------------------------------------------------------------------------------- 9
Specifications-------------------------------------------------------------------------------- 10
Basic Temperature Meter -------------------------------------------------------------- 10
Options -------------------------------------------------------------------------------------- 12
Display Functions and Messages----------------------------------------------------- 14
SETUP AND PROGRAMMING -------------------------------------------------- 15
Overview--------------------------------------------------------------------------------------- 15
Disassembling the Meter----------------------------------------------------------------- 16
Disassembling the PD755 -------------------------------------------------------------- 16
Disassembling the PD756 -------------------------------------------------------------- 16
Disassembling the PD757 -------------------------------------------------------------- 17
Reassembling the Meter ----------------------------------------------------------------- 18
Reassembling the PD755 -------------------------------------------------------------- 18
Reassembling the PD756 -------------------------------------------------------------- 18
Reassembling the PD757 -------------------------------------------------------------- 18
Jumper Configuration--------------------------------------------------------------------- 19
Input Selection and Lockout Jumpers (Main PCB)------------------------------- 19
Relay Acknowledge Enable (Display PCB) ---------------------------------------- 19
Fail-Safe Operation of Relays (Options PCB) ------------------------------------- 19
Power Selection----------------------------------------------------------------------------- 20
Overview------------------------------------------------------------------------------------ 20
Changing from 115 to 230 VAC Power --------------------------------------------- 20
Labeling Meter for 115 VAC, 230 VAC or 24 VDC ------------------------------- 21
Connections---------------------------------------------------------------------------------- 21
Overview------------------------------------------------------------------------------------ 21
Wiring Instructions------------------------------------------------------------------------ 22
Power Connections ---------------------------------------------------------------------- 23
Signal Connections----------------------------------------------------------------------- 24
Enter, Acknowledgement, and Hold Connections -------------------------------- 26
Optional Relays & 4-20 mA Output Terminals ------------------------------------ 27
Isolated 4-20 mA Output Transmitter Connections ------------------------------ 28
