June 2003 78072
520 Digital Weight Indicator
Analog Output Card Installation Instructions
PN 67607
Use the following procedure to install an analog
output card in the 520 indicator:
1. Disconnect indicator from power source.
Disconnect power before removing
indicator enclosure cover.
2. Place indicator on an antistatic work mat.
Remove screws that hold the enclosure cover
to the enclosure body.
Use a wrist strap to ground yourself and
protect components from electrostatic
discharge (ESD) when working inside
the indicator enclosure.
3. Carefully align the large option card
connector with connector J2 on the CPU
board (see Figure 1). Press down to seat the
option card in the CPU board connector.
Figure 1. Installing Option Card Onto CPU Board
4. Use screws provided in the option kit to
secure the other end of the option card to the
threaded standoffs on the CPU board.
5. Install terminal block end of cable assembly
to connector J1 of analog output option card
(see Figure 2).
6. Remove existing cover plate.
7. Re-use kep nuts to secure analog cover plate
to standoffs located on inside of enclosure
backplate (see Figure 3).
8. Set the mode select jumper (see Figure 2) for
voltage (V) or current (I) output.
9. Once cabling is complete, position the cover
over the enclosure and reinstall the screws.
Figure 2. Analog Output Card
10. Reconnect power to the indicator.
11. Configure the analog output card as described
on page 2.
Figure 3. Analog Output Cable Assembly
The 520 automatically recognizes all installed option
cards when the unit is powered on. No
hardware-specific configuration is required to identify
the newly-installed card to the system.
Warning
Caution
J2
Mode Select
Jumper
VOLTAGE–
VOLTAGE+
CURRENT–
CURRENT+
I
V
J1
Cable Assembly
Terminal Block
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