Tunnel Master® wbc Installation Guide
Page 30
Tunnel Master® wbc Installation Guide
Page 30
The following table describes jumper functions and settings:
Jumper
Jumped
Not Jumped
TP4
Transformer Selection. Both jumpers must be in either the E or I position, depending on the application.
This is for the voltage required for the user-configurable inputs.
TP5
Position I will use the voltage from JP25 to supply power to the individual inputs. (Dry Contact). (Default).
Position E will need to have voltage supplied between the COM and the individual inputs. (External
Voltage).
TP6
Delayed reset when S2 is pressed (default).
Immediate reset when S2 is pressed.
TP7
RS-485 select (default).
RS-422 select.
TP8
RS-485 select (default).
RS-422 select.
TP9
Keyboard processor diagnostics (internal use).
Standard operation (default).
TP10
GND test point.
TP11
GND test point.
TP12
Isolated GND test point.
TP13
Powers 5 V DC in battery back-up mode.
Powers 3.3 V DC only in battery back-up mode
(default).
TP21
Both TP 21 and TP 22 must be in either SINK or
SOURCE position, depending on the application:
TP22
SOURCE jumps pins 1 and 2.
SINK jumps pins 3 and 2.
TP23
Connects 120R termination resistor across TX+
and TX– on JP10.
No termination resistor across TX+ and TX– on JP10.
TP24
Connects 120R termination resistor across RX+
and RX– on JP10.
No termination resistor across TX+ and TX– on JP10.
TP25
Connects 1.5 K pull-up to RX+ on JP20.
No pull-up on RX+ on JP20.
TP26
Connects 1.5 K pull-down to RX– on JP20.
No pull-down on RX– on JP20.
TP27
RS-422, RS-485 selection:
RS-485 jumps pins 1 and 2 (default).
RS-422 jumps pins 3 and 2.
TP28
-
-
TP29
INPUT2 input selection.
TP30
INPUT3 input selection.
