Rice Lake 420 Plus HMI Digital Weight Indicator Installation Manual - Manual (Page 15)

420 Plus Installation Manual - Installation 11
2.3.7 Analog Output
If the optional analog output module is installed, attach
the output cable to connector J1 on the analog output
bo ard . Ta ble 2 - 5 lists the analog output pin
assignments.
Use the ALGOUT menu to configure and calibrate the
analog output module when cabling is complete. See
Section 2.4 for information about installing the analog
output module.
Table 2-5. Analog Output Module Pin Assignments
Pin Signal
1 + Current Out
2 – Current Out
3 + Voltage Out
4 – Voltage Out
2.4 Analog Output Module Installation
To install or replace the analog output module (PN
85659), follow the steps listed in Section 2.2 on page 6
for opening the
420 Plus
enclosure.
Mount the analog output module on its standoffs in the
location shown in Figure 2-4 8 and plug the module
input into connector J9 on the
420 Plus
board. Connect
output cable to the analog output module as shown in
Table 2-5, then reassemble the enclosure (Section 2.5).
See Figure 7.8 50 for analog output calibration
procedures.
2.5 Enclosure Reassembly
Once cabling is complete, position the backplate over
the enclosure and reinstall the backplate screws. Use
the torque pattern shown in Figure 2-6 to prevent
distorting the backplate gasket. Torque screws to 15
in-lb (1.7 N-m).
1
6
9 4 2
5
7
10 Torque Pattern 8 3
Figure 2-6. 420 Plus Enclosure Backplate
Torqued screws may become less tight as the gasket is
compressed during torque pattern, therefore a second
torque is required using the same pattern and torque
value.
NTEP - Approval
Fastener
Figure 2-7. NTEP Sealing
2.6 Board Removal
If you must remove the
420 Plus
CPU board, use the
following procedure:
1. Disconnect power to the indicator. Remove
backplate as described in Section 2.2 on
page 6.
2. Disconnect power supply cable from connector
J7 on the 420 Plus CPU board.
3. Unplug connectors J1 (load cell cable), J2
(digital inputs), J3 (EDP/RS-232), J4 (serial
communications), J6 (digital outputs), and J10
& J11 (keypad ribbon cables). If an analog
output board is installed, disconnect the analog
output cable. See Figure 2-4 8 for connector
locations.
4. Remove the five screws from the CPU board,
then lift the board out of the enclosure.
To replace the CPU board, reverse the above
procedure. Be sure to reinstall cable ties to secure all
cables inside the indicator enclosure.