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