Rice Lake 820i, Техническое руководство

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820i Programmable HMI Indicator/Controller
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2.5 Slot Assignments
Table 2-4 lists the slot numbers, CPU board connectors, and configuration assignments made for both onboard and expansion
card functions in the 820i . See Figure 2-3 for connector locations.
2.6 Enclosure Reassembly
Once cabling is complete, position the backplate over the enclosure and reinstall the backplate screws. Use the torque pattern
shown in Figure 2-4 to prevent distorting the backplate gasket. Torque screws to 15 in-lb (1.7 N-m).
Figure 2-4. 820i 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.
2.7 CPU Board Removal
Removing the 820i CPU board:
1. Disconnect power to the indicator.
2. Remove backplate as described in
Section 2.2 .
3. Unplug connectors for power to the board, serial communications, digital I/O, and any installed option cards.
4. Remove any installed option cards.
5. Remove the five Phillips head screws and two kep nuts from the CPU board.
6. Gently lift up the CPU board, then disconnect bottom-side connectors for power to display, ribbon cable, and keypad
connector.
7. Remove CPU board from the enclosure. If necessary, cut cable ties to shift cables out of the way.
To replace the CPU board, reverse the above procedure. Be sure to reinstall cable ties to secure all cables inside the indicator
enclosure.
Slot Number Connector Function Configured As
0
Connector J5 Onboard digital I/O Slot 0, bits 1–8
Connectors J9, J1, J10, J11 Onboard serial communications Ports 1–4
1 Connectors J7, J8 Onboard single- or dual-channel A/D Channel 1, Channel 2
2 Connector J6 (option card slot)
Dual-channel serial expansion card Ports 7–8
Digital I/O expansion card Slot 2, bits 1–24
Analog input card Slot 2, channels 1–2
Analog output card Analog 2
Pulse input card Pulse 2
Memory expansion card Memory 2
Bus communications cards Bus Option 2
Table 2-4. 820i Slot Assignments
1
3
5
14
17
16 12
9
8
7
10
11
18
15
4
2
6
13
T o r q u e b a c k p l a t e s c r e w s
t o 1 5 i n - l b ( 1 . 7 N - m )
IMPORTANT