Large Display Temperature Meters
Instruction Manual
29
Programming
Overview
This section of the manual deals with programming the following aspects of the
meter:
Basic Meter
Alarm Set Points
4-20 mA Output
Lockout Jumper
The Digital Temperature Meter is programmed after setting three jumper arrays,
see
Jumper Configuration
on page 19. The
ENTER
button is used to program
all the meter functions and to display useful information.
The jumper arrays are used for setting the input (thermocouple or RTD), lockout,
relay acknowledge enable (ACK), and relay fail-safe operation.
Jumper Arrays
Jumper Array Function
Label
Location
Input signal T/C or RTD
JP1
Main PCB
Lockout JP2
Main
PCB
Relay ACK enable
JP5
Display PCB
Fail-safe J5
Options
PCB
For jumper array location see:
Figure 31 and Figure 34 on pages 61, 63 for PD755.
Figure 32 and Figure 35 on pages 62, 63 for PD756.
Figure 33 and Figure 36 on pages 62, 64 for PD757.
If the optional relay PCB is installed, it is best to program the fail-safe jumper (J5
on Options PCB) for the desired operation before reassembling the Display PCB
because this jumper is not accessible once the Display PCB is installed.
Select Type of Input Signal T/C or RTD
The Digital Temperature Meter can accept either thermocouples or RTD inputs,
using jumper JP1 located on the Main PCB.
Figure 11. JP1 Input Signal Selection Array.
The Digital Temperature Meter can be programmed to restrict personnel from
making changes to the programmed parameter settings; this is accomplished by
installing a jumper over LOCK pins on JP2.
