User manual

22
Publication 1738-SG001B-EN-P
ArmorPoint I/O
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Choose the ArmorPoint I/O high-speed counters when you need:
The counter modules serve as signal conditioners and function blocks, i.e., counters,
between the customer process signals on the mounting base and the POINTBus backplane
containing the command information. The three main functional blocks are the customer
digital I/O interface, the counter ASIC, and the microprocessor.
The counter modules accept feedback from:
y encoders (single-ended or differential)
y pulse generators
y mechanical limit switches
y frequencies up to 1 MHz
A filter is available with four settings:
y 50 Hz
y 500 Hz
y 5 kHz
y 50 kHz
y Intelligent counter modules with their own microprocessors and I/O that are capable
of reacting to high-frequency input signals up to 1 MHz.
y Signals received at the inputs to be filtered, decoded, and counted.
y A pulse width modulated signal. (1738-VHSC24M23 only)
y Count and rate values that can be used to activate up to two embedded outputs in
less than 1 ms (1738-VHSC24M23 only).
y Signals that are also processed to generate rate and time-between pulses (pulse
interval) data.
This filter can be turned off to achieve the fastest counting rate.
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Number of Counters 1 1
Keyswitch Position 2 2
Output Groups
⎯
1 group of 2
Input Frequency, Max.
1.0 MHz counter and encoder X1
configurations (no filter)
500 kHz encoder X2 configuration (no filter)
250 kHz encoder X4 configuration (no filter)
1.0 MHz counter and encoder X1
configurations (no filter)
500 kHz encoder X2 configuration (no filter)
250 kHz encoder X4 configuration (no filter)
Voltage, On-State Input, Nom. 5V dc 24V dc
Output Delay Time, OFF to ON
⎯ 25 μs (load dependent)
9
Current, On-State Input, Min.
≥5 mA ≥5 mA
PointBus Current (mA) 160 110
Power Dissipation, Max. 1.1 W @ rated load 1.9 W @ rated load
9OFF to ON delay is time from a valid output “on” signal to output energization.