Saia-Burgess Controls AG
Manual Manual PCD 1 / PCD 2 Series │ Document 26 / 737 EN22 │ 2013-11-26
5
Input/output (I/O) modules
5-107
Fast counting modules
5.16.1 PCD2.H100, counting module up to 20 kHz
Application
Simple counting module, comprising two inputs “A” and “B” plus one direct control
output marked “CCO”; allows counting of the number of revolutions or the calculation
of distances (pulses) and the measurement by counting of pulses within a logical
AND gate (second input).
Typical areas of application:
● Counting revolutions or distances (impulses)
● Presetting a count value and switching off output CCO when Counter = 0
● Measurement by counting: measuring signals counted only when particular
conditions are met, e.g. photoelectric barrier covered
● Counting with recognition of count direction for incremental shaft encoders
providing simple motion control
Technical data
Number of systems: 1
Counting range:
0 … 65,535 (16 bit) (can be extended with CPU counters)
Counting frequency: max. 20 kHz (at pulse/pause ratio 50 %)
Data protection: All data in this module are volatile
(non-volatile Saia PCD
®
registers are available).
Digital inputs
“IN-A” and “IN-B” signal voltages: nominal voltage: 24 VDC
“low” range: -30 … +5 V
“high” range: +15 … 30 V for source operation
Input current: typically 7.5 mA
Input ler: 25 kHz
Process output
Counter controlled output CCO: counter output (switches when count is 0 or 65,535)
Current range: 5 … 500 mA (max. current leakage 1 mA)
(min. load resistance 48 Ω in voltage
range 5 … 24 V).
Voltage range: 5 … 32 V smoothed, residual ripple max. 10 %
Circuit type: Electrically coupled, not short circuit protected,
positive switching
Voltage drop: typically 2V at 500 mA
Output delay: < 10 µs, (longer for inductive load due to
protective diode).
Power supply
External supply 5 … 32 VDC, (for supply of CCO output only)
Internal current consumption:
(from +5 V bus)
max. 90 mA
Internal current consumption:
(from V+ bus)
0 mA
External current consumption: CCO output load current
Operational conditions
Ambient temperature operation: 0 … +55 °C without forced ventilation,
storage: -20 … +85 °C
Noise immunity: EC mark according to EN 61 000-6-3 and EN 61 000-6-2
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