Rice Lake iRite 920i User manual

January 2005 69089
920i™Programmable HMI Indicator/Controller
Analog Output Card Installation Instructions
PN 67602
Use the following procedure to install analog output
cards in 920i indicators:
1. Disconnect indicator from power source.
Disconnect power before removing
indicator backplate.
2. Place indicator face-down on an antistatic
work mat. Remove screws that hold the
backplate 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 J5 or J6 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 the screws and lockwashers provided in
the option kit to secure the other end of the
option card to the threaded standoffs on the
CPU board.
5. Make connections to the option card as
required. Use cable ties to secure loose cables
inside the enclosure.
6. Set the mode select jumper (see Figure 3) for
voltage or current output.
7. Once cabling is complete, position the
backplate over the enclosure and reinstall the
backplate screws. Use the torque pattern
shown in Figure 2 to prevent distorting the
backplate gasket. Torque screws to 15 in-lb
(1.7 N-m).
8. Ensure no excess cable is left inside the
enclosure and tighten cord grips.
9. Reconnect power to the indicator.
10. Configure the analog output card as described
on page 2.
Figure 2. 920i Enclosure Backplate
The 920i 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.
An analog output card installed at connector J5 on the
CPU board is configured as ALGOUT1; a card
installed at connector J6 is configured as ALGOUT2.
Figure 3. Analog Output Card
J6
1
3
5
14
17
16 12
9
8
7
10
11
18
15
4
2
6
13
Torque backplate screws
to 15 in-lb (1.7 N-m)
MODE SELECT
JUMPER
I
V
CURRENT + CURRENT –
VOLTAGE + VOLTAGE –

2920i 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 3-1):
• Set SOURCE1 for the number of the scale
channel used as the source for the analog
output
• Set MODE1 to track either gross or net
weight from that scale
• Set OFFSET to 0% for 0–10 V or 0–20
mA output; set to 20% for 4–20 mA output
• Set ERRACT to specify how the analog
output will respond to system error
conditions
• 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 card:
• 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. Use the numeric keypad 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. Use the numeric keypad 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. Use the numeric keypad to
adjust the zero value as required.
6. Return to normal mode. Analog output
function can be verified using test weights.
See the 920i Installation Manual, PN 67887, for more
configuration information.
Figure 3-1. 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 1.1 KΩ
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
SCALES SERIAL FEATURE PFORMT SETPTS DIG I/O ALGOUT VERS
number
40
number
SOURCE1
PROG
OFFSET
20%
0%
ERRACT
SCALE n
FULLSC
HOLD
ZEROSC
MIN
number
000000
MAX
number
10000
TWZERO
59650
TWSPAN
MODE1
GROSS
NET
If SOURCE1≠ PROG