Rice Lake 820i, Техническое руководство

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820i Programmable HMI Indicator/Controller
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2.3.4 Digital I/O
Digital inputs can be set to provide many indicator functions, including all keypad functions. Digital inputs are active low (0
VDC), inactive high (5 VDC).
Digital outputs are typically used to control relays that drive other equipment. Outputs are designed to sink, rather than source,
switching current. Each output is a normally open collector circuit, capable of sinking 24 mA when active. Digital outputs are
wired to switch relays when the digital output is active (low, 0 VDC) with reference to a 5 VDC supply.
Table 2-3 shows the pin assignments for connector J5.
Digital inputs and outputs are configured using the DIG I/O menu. See Section 3.2.7 on page 43 for configuration information.
An optional 24-channel digital I/O expansion card, PN 67601, is available for applications requiring more digital I/O channels.
Digital I/O points can be configured to count active pulse inputs by setting them to PROGIN (DIGIN menu) and using
the iRite-IDE DigInS
s
B
b
Activate handler with a timer to turn the handler on and off. However, the fastest pulse rate
that can be counted using a digital input is 10Hz (10 pulses per second). More demanding applications can use the
pulse input option card (PN 67603) to count pulses in the 4–4000Hz range.
2.4 Installing Option Cards
Each option card is shipped with installation instructions specific to that card.
Option cards are not hot-pluggable. Disconnect power to the 820i before installing option cards.
General installation of options cards:
1. Disconnect power to the indicator.
2. Remove backplate as described in
Section 2.2 .
3. Carefully align the large option card connector with connector J6 on the CPU board (see Figure 2-3 ) or J1.
4. Press down to seat the option card in the CPU board connector.
5. Use the screws provided in the option kit to secure the option card to the threaded standoffs on the CPU board (see
Figure 2-3 ).
6. Make connections to the option card as required.
7. Use cable ties to secure loose cables inside the enclosure.
8. Reassemble the enclosure as described in
Section 2.6 .
The 820i 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.
J5 Pin J5 Signal
1 +5 VDC
2 GND
3 DIO 1
4 DIO 2
5 DIO 3
6 DIO 4
7 DIO 5
8 DIO 6
9 DIO 7
10 DIO 8
Table 2-3. J5 Pin Assignments (Digital I/O)
Note
Note
CAUTION