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AC500

Technical data

DC541-CM interrupt I/O and fast counter module
In the operating mode counter, the channels can be confgured as follows:
Input, Output, 32-bit up/down counter (uses C0...C3) as a 32-bit counter without limit, 32-bit periodic counter as a 32-bit counter with a limit, limiter
for a 32-bit counter (limit channel 0), 32-bit up counter (forward counter) with the frequencies 50 kHz, 5 kHz and 2.5 kHz, pulse-width modulation
(PWM) with a resolution of 10 kHz, time and frequency measurement, frequency output.
Type DC541-CM
Number of channels per module
Confgurable channels DC 8
(confgurable as inputs or outputs)
Additional confguration of channels as
Fast counter Yes 4
Connection via CPU terminal base. Occupies one ?
communication module slot
Digital inputs
Input signal voltage 24 V DC
characteristic acc. to EN 61132-2 Type 1
0 signal -3...+5 V DC
Undefned signal state 5...15 V DC
1 signal 5...30 V DC
Input time delay (0 -> 1 or 1 -> 0) 20 µs
Clamp to clamp - 300 µs with interrupt task
Input current per channel
At input voltage 24 V DC 5 mA typically
5 V DC > 1 mA
15 V DC > 5 mA
30 V DC < 8 mA
Digital outputs
Transistor outputs 24 V DC, 0.5 A ?
Readback of output ?
Switching of 24 V load ?
Output voltage at signal state 1 Process voltage UP minus 0.8 V
Output current
Nominal current per channel 500 mA at UP = 24 V
Maximum (total current of all channels) 8 A
Residual current at signal state 0 < 0.5 mA
Demagnetization when switching off inductive loads by internal varistors
Potential isolation
Per module ?
Voltage supply for the module Internally via backplane bus

Interrupt I/O table
Confguration as Confguration for channel no. Max. no. of channels Remarks and notes regarding possible alternative
Chan. Chan. Chan. Chan. Chan. for this function combinations of the remaining channels (a and b)
0 1 2 3 4-7
Mode 1: Interrupt functionality
Interrupt Digital input 1 1 1 1 4 8 Each channel can be configured individually as interrupt
Digital output 1 1 1 1 4 8 input or output
Mode 2: Counting functionality
Digital I/Os PWM (1) Digital input 1 1 1 1 4 8 Usual input
Digital output 1 1 1 1 4 8 Usual output
PWM, resolution 10 kHz 1 1 1 1 4 8 Outputs and pulsed signal with and adjustable
on-off ratio
(1) Counter and fast counter data available on technical documentation.

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