2
SETTING THE CARD ADDRESS
Each FlexCard contains a four position DIP switch, that is used to set the
FlexCard address. The address selection must be unique for each FlexCard
inserted in the PAX2 host. The address is used only for internal data exchange
between the FlexCard and the host. The address of each FlexCard
MUST
be
set to match the PAX2 host slot location in which the card will be installed. A
four position dip switch is used to select the address using a binary format. The
switch settings for address 1, 2, and 3 are shown.
Note
:
SET THE ADDRESS PRIOR TO INSTALLING THE CARD.
Binary Bit Weights: 8 4 2 1 (Switch 1 to 4)
Address 1
Address 2
Address 3
1 2 3 4
ON
ON
ON
1 2 3 4
1 2 3 4
TOP VIEW
INSTALLATION
CAUTION
: The option card and main circuit board contain static
sensitive components. Before handling the cards, discharge
static charges from your body by touching a grounded bare
metal object. Ideally, handle the cards at a static controlled
clean workstation. Also, only handle the cards by the edges.
Dirt, oil or other contaminants that may contact the cards can
adversely affect circuit operation.
WARNING
: Exposed line voltage will be present on the circuit
boards when power is applied. Remove all power to the unit
AND load circuits before accessing the unit.
To Install:
1. Remove the main assembly from the rear of the case by squeezing both
finger tabs on the rear cover at the same time, and pulling the assembly out
of the case. Or use a small screwdriver to depress the finger tab latches and
pull the main assembly out of the case. When handling the main circuit
board assembly, hold it by the rear cover. Do not remove the rear cover from
the main circuit board.
2. Install applicable standard option cards (PAXCDS, PAXCDC, PAXCDL)
before continuing.
3. Determine the option slot location in which the FlexCard will be installed.
The FlexCard may be installed in any available option card slot. Note that
after the FlexCard top terminal case knock-out is removed from the PAX2
case (Reference Step 8), only another FlexCard with top terminals should
be installed in the option slot location.
4. Set the FlexCard Card Address DIP switch to match the option card slot
position in which it will be installed. Attach the appropriate slot location
label to the rear of the top terminal block and then remove the top terminal
block from the FlexCard.
5. Align the FlexCard rear terminals with the rear cover slot position (address)
that the FlexCard is being installed.
6. Align the option card connector with the appropriate main circuit board
FlexCard connector.
7. Verify that the tab on the option card rests in the alignment slot on the main
assembly display board.
8. A knock-out on the top of the PAX2 case will need to be removed to allow
the FlexCard top terminal block connection to be made later. Locate the
shaped knock-out, positioned at the installed FlexCard option slot
location. Carefully remove the knock-out, being careful not to remove
additional (unused) knock-outs. Trim knock-out (gates) that remain on the
case.
9. Slide the assembly back into the case. Be sure the rear cover latches, at the
finger tab, engage in the case.
10. Make output wiring connections to the top terminal block. Install the top
terminal block by aligning it with the option card and option slot knock-out
hole. Firmly press the top terminal block to engage the terminal block
latches. Terminal block should not pull off without depressing the terminal
block latches. Do not apply power to the controller if the top terminal block
is not in place.
Finger
Tab
Finger
Tab
Slot #
Alignment
Slots
Standard Card
Connectors
Main
Circuit
Board
1
2
3
FlexBus
Connectors
OUTPUT CONNECTIONS (Top Terminal Block)
+Vou
t
OUT
1
OUT
2
OUT
3
OUT
4
CO
MM
PCB Edge Fingers on Card
Removable Terminal Block
(Install through access slot
in top of case)
(front of meter)
1
2
3
4
5
6
6
5
4
3
2
1
COMM
OUT
+Vout
COMM
-
+
LOAD
LOAD
INTERNAL POWER
EXTERNAL POWER
30 VDC
MAX
OUT
Top Terminal Block
Slot ID Label
Rear Terminal Block
