Main Pcb Jumpers - Cardinal 225 Installation And Technical Manual

Main PCB Jumpers

J1 (TEST) – B.L. TEST
When installed, this jumper will turn the backlight on, ignoring the BACK LITE= setting.
J2 (AUTO ON) – AUTO-ON
When installed, this jumper will cause the indicator to power on automatically whenever power
is applied to the power input connector. If power is lost momentarily and then reapplied, the
indicator will turn on without pressing the ON key.
J3 AND J4 – RS-232/USB PORT
These jumpers control whether COM3 is RS-232 and uses Serial I/O P16 (pins 10, 11, and 12)
or USB and uses the USB-B header, P13 or USB-B port, P14.
J6 (PWC1-8) and J7 (PWC9-16) – REMOTE OUTPUT SRC (SOURCE)
When installed, these jumpers allow the 225 indicator to supply (source) 5 VDC (VCC) or
15VDC (VP) to a solid-state relay or other load of 200 ohms or greater. To operate from the
5 VDC (VCC) or 15VDC (VP) source, the positive connection from the relays must be
connected to P18 (P19) pins 2 through 9 and the negative wire from the relays to P18 (P19)
pin 10 (GND). See Figure No. 10 for connector P18 location and Figure No. 11 for connector
P19 location.
For completely isolated outputs, J6 (J7) must be open (on one pin only or removed) and the
user must provide 5 to 24 VDC to P18 (P19) pin 1 (+SRC) and a ground return to the load.
The load must still be 200 ohms or greater and P18 (P19) pin 10 (GND) is not connected.
J8 (REMOTE IN) – REMOTE IN SRC (SOURCE)
When installed, this jumper allows the 225 indicator to supply (source) 5 VDC to a remote input
circuit. Connecting P17 pins 1 through 9 to P17 pin 10 (GND) through a switch will cause the
selected action. See Figure No. 9 for connector P17 location.
For completely isolated inputs, J8 must be open (on one pin only or removed) and the user
must provide 5 to 24 VDC to P17 pin 1 (+SRC) and a ground return to the switch connected
to P17 pin 2 through 9. Note that P17 pin 10 (GND) is not connected.
J9 (-SEN) and J11 (+SEN) – SENSE JUMPERS
If the sense leads are NOT used, you must install jumpers at J9 and J11 (near the P20 and
P21 terminal blocks). These jumpers connect the sense leads to the excitation leads. If sense
leads ARE used (as in motor truck scales), these jumpers should be open (on one pin only or
removed).
J10 (DLB) – DEAD LOAD BOOST JUMPER
For very low dead loads (less than 10% of the combined load cell capacity), connect J8, the
DLB (dead load boost) jumper on the printed circuit board.
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MAIN PC BOARD, CONT.
8200-M698-O1 Rev B  225 Installation and Technical