PAXUSB00 datasheet(8/32 Pages) REDLION

8 / 32 page

The option cards are separately purchased optional cards that perform

specific functions. These cards plug into the main circuit board of the meter. The

option cards have many unique functions when used with the PAX.

Note: The PAXC and PAXR only use the setpoint option card.

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.

To Install:

1. With the case open, locate the option card connector for the card type to be

installed. The types are keyed by position with different main circuit board

connector locations. When installing the card, hold the meter by the rear

terminals and not by the front display board.*

2. Install the option card by aligning the card terminals with the slot bay in the

rear cover. Be sure the connector is fully engaged and the tab on the option

card rests in the alignment slot on the display board.

3. Slide the meter base back into the case. Be sure the rear cover latches fully

into the case.

4. Apply the option card label to the bottom side of the meter in the designated

area. Do Not Cover the vents on the top surface of the meter. The surface of

the case must be clean for the label to adhere properly.

3.0 insTalling OpTiOn Cards

Internal Supply

(18 V unregulated)

External Supply

(30 V

)

max

Quad Sourcing Open Collector Output Card Supply Select

* If installing the Quad sourcing Option Card (PAXCDS40), set the

jumper for internal or external supply operation before continuing.

Finger

Hold

Finger

Hold

Serial

Communications

Card

Setpoint

Output

Card

Alignment

Slots

Connectors

Analog Output

Card

Main

Circuit

Board

TOP VIEW

2.0 seTTing The Jumper and dip swiTChes

2.1 SETTING THE JUMPER

The meter has one jumper for user input logic. When using the user inputs

this jumper must be set before applying power. The Main Circuit Board figure

shows the location of the jumper and DIP switch.

The user input jumper determines signal logic for the user inputs, when they

are used with user functions or for input signal direction. All user inputs are set

by this jumper.

2.2 SETTING THE INPUT DIP SWITCHES

The meter has six DIP switches for Input A and Input B terminal set-up that

must be set before applying power. NOTE: The PAXR only uses switches 1-3.

SWITCHES 1 and 4

LOGIC: Input trigger levels VIL = 1.5 V max.; VIH = 3.75 V min.

MAG: 200 mV peak input (must also have SRC on). Not recommended with

counting applications.

SWITCHES 2 and 5

SRC.: Adds internal 3.9 KΩ pull-down resistor, 7.3 mA max. @ 28 VDC,

VMAX = 30 VDC.

SNK.: Adds internal 7.8 KΩ pull-up resistor to +12 VDC, IMAX = 1.9 mA.

SWITCHES 3 and 6

HI Frequency: Removes damping capacitor and allows max. frequency.

LO Frequency: Adds a damping capacitor for switch contact bounce. Also

limits input frequency to 50 Hz and input pulse widths to 10 msec.

Main

Circuit

Board

REAR TERMINALS

FRONT DISPLAY

INPUT SET-UP

DIP SWITCHES

USER

INPUT

JUMPER

SRC

SNK

Finger

Tab

Finger

Tab

To access the jumper and switches, remove the meter base from the meter

case by firmly squeezing and pulling back on the side rear finger tabs. This

should lower the latch below the case slot (which is located just in front of the

finger tabs). It is recommended to release the latch on one side, then start the

other side latch.

Warning: Exposed line voltage exists on the circuit boards. Remove

all power to the meter and load circuits before accessing inside of

the meter.

Input B SRC.

Input B LO Freq.

Input B MAG.

Input A LO Freq.

Input A SRC.

Input A MAG.

SNK.

HI Freq.

Logic

HI Freq.

SNK.

Logic

Factory Setting

PAXUSB00 Datasheet(PDF) 8 Page - Red Lion Controls. Inc

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