4
Remote I/O
Digital Input Module 24 V
Type 9471
●
For active 0 / 24 V signals
●
16 channels
●
Without explosion protection
for installation in safe areas
●
Galvanic isolation between
inputs and system
●
Functions can be parameterized
●
Two channels can be
parameterized as frequency
inputs or counters up to 20 kHz
●
Conversion time 1 ms
●
Status LEDs for
RUN and ERROR
●
Connection of the field cables
with plug-in terminals
●
Module can be hot swapped while
powered up
09271E02
The inputs are passive voltage inputs for 0 / 24 V signals.
All 16 channels have a common earth (0 V).
Channels 14 and 15 are equipped with rapid comparators and can
also be parameterized for frequency measurement or as pulse
counters. In this operation mode, the input signals of channels 14
and 15 are also transferred into the data word for the digital inputs.
Communication with the CPU & Power Module is achieved using
the address and data circuits of the BusRail, which also contain the
circuits for the power supply to the module.
The interface of the Digital Input Module with the internal data bus
of the BusRail is designed with redundancy.
Safe Area
General Catalogue 27.01.2006
4/1
4
Digital Input Module 24 V
Type 9471
Selection table
Version
Description
Ordering code
Weight
Without Ex-protection
For intstallation in safe areas only.
9471/10-16-11
kg
0,267
The module may not be operated on a BusRail together with Ex i I/O modules.
Technical Data
Digital inputs,
channels 0 to 15
Number of channels
16
Measurement dimensions
Voltage
Min. voltage for ON
13V
Max. voltage for OFF
5V
Max. voltage
30V
Switching threshold
approx. 8 ... 10 V
Hysteresis
approx. 2 V
Internal resistance
approx. 6 kOhm
Min. pulse width
of input signal
channel 0 ... 15 as digital input
approx. 1 ms
channel 14 or 15
as frequency input or counter
approx. 2 ms
Channel 14 and 15
as frequency input or counter
Max. switching frequency
20 kHz, only with push-pull sensor *)
(at frequencies > 1 kHz the maximum line length decreases, e.g. at 5 kHz to approx. 75 m)
*) the inputs must be switched to + 24 V and to 0 V.
Schematic representation:
09272E00
Min. pulse width
25 ms
Frequency input
Measurement ranges
1 Hz ... 1 kHz, 1 Hz ... 20 kHz (parameterizable for each channel)
Resolution
Measurement range
1 Hz ... 1 kHz
0,05 Hz
Measurement range
1 Hz ... 20 kHz
1 Hz
Accuracy
0.02 %
Counter
4/2
Counter control signal
Start, Stop, Reset
Counter range
0 ... 65535
General Catalogue 27.01.2006
4
Digital Input Module 24 V
Type 9471
Technical Data
Characteristic values
Max. signal delay
from digital inputs
to internal bus
from frequency inputs
to internal bus
channels 0 ... 15 as digital inputs
approx. 1 ms
channel 14 or 15 as
frequency input or counter
approx. 2 ms
measurement range 1 Hz ... 1 kHz for
measuring frequency f = 1 ... 35 Hz
2 ms + 1/f
measurement range1 Hz ... 1 kHz for
measuring frequency f = 35 Hz ... 1 kHz
34 ms + 1/f
measurement range 1 Hz ... 20 kHz
gate time
50 ms
approx. 50 ms
200 ms
approx. 200 ms
1s
approx. 1 s
from counter inputs
to internal bus
MTBF acc. MIL
approx. 2 ms
approx. 25 years
Further parameters
Invert input value
ON, OFF (for all channels)
Pulse width extension
0 s, 0,6 s, 1,2 s, 2,4 s (for channel groups)
Gate time for frequency
measurement range
1 Hz ... 20 kHz
50 ms, 200 ms, 1 s (channels 14, 15)
Active edge for counter
(channels 14, 15)
positive (voltage ¤)
negative (voltage ¥)
Retrievable parameters
Manufacturer, type, version, serial number
Fault diagnostics
Module faults
•
•
•
•
•
Internal primary bus fault
Internal redundant bus fault
No response
Dissimilar module configuration
Hardware fault
Signal fault
None
Power supply
Max. power consumption
1,4 W
Max. power loss
3,8 W
Engineering and mounting
•
•
•
•
The module is without Ex-protection and for installation in safe areas only
The module may not be operated on a BusRail together with Ex i I/O modules
Maximum input voltage: 30 V
Recommended fuse: 2 A fuse or current limitation each fieldstation
Accessories see page 4/77
Dimension drawings see page 4/80
We reserve the right to make alterations to the technical data, weights, dimensions, designs and products available without notice.
The illustrations cannot be considered binding.
General Catalogue 27.01.2006
4/3