Rice Lake 520 User manual

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
Cover Plate
Standoffs
Cable Assembly
Terminal Block

2 520 Analog Output Card Installation Instructions
Analog Output Calibration
The following calibration procedure requires a
multimeter to measure voltage or current output from
the analog output module.
NOTE:
The analog output must be calibrated after the
indicator itself has been configured and calibrated.
1. Enter setup mode and go to the ALGOUT
menu (see Figure 4):
•Set OFFSET to 0% for 0-10 V output, 20%
for 4-20 mA output
•Set mode select jumper on analog output
board to “V” for 0-10 V output, or “I” for
4-20 mA output
•Set MIN to lowest weight value to be
tracked by the analog output
•Set MAX to highest weight value to be
tracked by the analog output
2. Connect multimeter to connector J1 on the
analog output board:
•For voltage output, connect voltmeter
leads to pins 3 and 4
•For current output, connect ammeter leads
to pins 1 and 2
3. Adjust zero calibration: Scroll to the TWZERO
parameter. Press to view zero value, then
check voltage or current reading on
multimeter. Press and hold or to adjust the
zero value up or down.
4. Adjust span calibration: Scroll to the TWSPAN
parameter. Press to view span value, then
check voltage or current reading on
multimeter. Press and hold or to adjust the
span value up or down.
5. Final zero calibration: Return to the TWZERO
parameter and verify that the zero calibration
has not drifted. Press and hold or to
re-adjust the zero value as required.
6. Return to normal mode. Analog output
function can be verified using test weights.
See the 520 Installation Manual , PN 68973, for more
configuration information.
Figure 4. Analog Output Menu
Specifications
Resolution 16-bit, monotonicity over temperature
Linearity ±0.03% of full scale input
Current Output 0–20 mA or 4–20 mA (20% offset)
Maximum Load Resistance 840
Ω
Power Consumption 3.9W (max. load @ 20 mA)
Voltage Output 0–10 VDC
Minimum Load Resistance 1.2 K Ω
Power Consumption 3.9W (max. load @ 10 VDC)
Input Protection Short circuit protection, 300W transient voltage suppression
Protection for ESD, EFT (electrical fast transients), tertiary lightning, and system-generated transients per
IEC 60001-4-2, 60001-4-4, and 60001-4-5; European Standards EN50082 and EN61000-4
XXXXXXX XXXXXXXALGOUTDIG INSETPTSXXXXXXXPROGRM PFORMTSERIALCALIBRXXXXXXXCONFIG FORMAT
SOURCE1
GROSS 0%
20%
OFFSET ERRACT
FULLSC
HOLD
0.000000
number
MIN
10000.00
number
MAX TWZERO
NET
TWSPAN
ZEROSC
XXXXXXXVERS
0000020
number
0062040
number