Rice Lake iRite 920i User manual

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January 2005 69086
920i™Programmable HMI Indicator/Controller
Pulse Input Card Installation Instructions
PN 67603
Use the following procedure to install pulse input
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. Press down to seat the option card in
the CPU board connector.
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 (see Figure 1).
Figure 1. Installing Option Card Onto CPU Board
5. Make connections to the option card as
required. Use cable ties to secure loose cables
inside the enclosure. 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).
6. Ensure no excess cable is left inside the
enclosure and tighten cord grips.
7. Reconnect power to the indicator.
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.
Figure 3. Pulse Input Card
Specifications
Sample Rate 10–4 KHz
Counting Speed DC to 50 KHz maximum
Input High impedance, with 1.65KΩ pull-up
resistance. Compatible with
TTL/CMOS/switch contacts.
Logic Levels Low: <1 V; High: >3 V, up to 12 V
Warning
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)
+12V
J1
1
GND
PULSE IN
+12V
GND
PULSE IN2
234 5 6
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