920i
™
Programmable HMI Indicator/Controller
Pulse Input Card Installation Instructions
PN 67603
Use the following procedure to install pulse input cards in 920i indicators:
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1. Disconnect indicator from power source.
W arning
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.
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Torque backplate screws to 15 in-lb (1.7 N-m)
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Use a wrist strap to ground yourself and protect components from electrostatic discharge (ESD) when working inside the indicator enclosure.
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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).
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Figure 2. 920i Enclosure Backplate
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The 920i automatically recognizes all installed option c a r d s w h e n t h e u n i t i s p o w e r e d o n . N o hardware-specific configuration is required to identify the newly-installed card to the system.
J6
J1
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Figure 1. Installing Option Card Onto CPU Board
5. Make connections to the option card as required. Use cable ties to secure loose cables i n s i d e t h e e n c l o s u r e . O n c e c a b l i n g i s 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.
Specifications
Sample Rate
Counting Speed
Input
Logic Levels
Figure 3. Pulse Input Card
10–4 KHz
DC to 50 KHz maximum
High impedance, with 1.65K
Ω pull-up resistance. Compatible with
TTL/CMOS/switch contacts.
Low: <1 V; High: >3 V, up to 12 V
January 2005
To be the best by every measure
69086