Large Display Temperature Meters
Instruction Manual
19
Jumper Configuration
Before programming the Digital Temperature Meter, it is necessary to configure
three jumper arrays. The jumper arrays are used for setting type of input signal
(thermocouple or RTD), lockout programmed settings, enable relay
acknowledgement (ACK), and setting relay fail-safe operation.
Input Selection and Lockout Jumpers (Main PCB)
Figure 31 on page 61 for PD755
Figure 32 on page 62 for PD756
Figure 33 on page 62 for PD757
Jumper JP1 Position
Function
RTD RTD
Input
TC Thermocouple
Input
Jumper JP2 Position
Function
LOCK
Sets a lock on programming
functions
Relay Acknowledge Enable (Display PCB)
Figure 34 on page 63 for PD755
Figure 35 on page 63 for PD756
Figure 36 on page 64 for PD757
Jumper
JP5 Position
Function
1
Enable relay 1 manual reset
2
Enable relay 2 manual reset
3
Enable relay 3 manual reset
4
Enable relay 4 manual reset
Fail-Safe Operation of Relays (Options PCB)
Figure 24 on page 57 for PD755
Figure 25 on page 58 for PD756
Figure 27 on page 59 for PD757
Jumper
J5 Position
Function
On
Apply fail-safe function to all relays
Off
Disable fail-safe function to all relays
