Data sheet
6ES7521-1BL00-0AB0
SIMATIC S7-1500, digital input module DI 32x24 V DC HF, 32 channels in groups
of 16; of which 2 inputs as counters can be used; input delay 0.05..20 ms input
type 3 (IEC 61131); diagnostics; hardware interrupts: front connector (screw
terminals or push-in) to be ordered separately
General information
Product type designation
DI 32x24VDC HF
HW functional status
from FS04
Firmware version
V2.2.1
● FW update possible
Yes
Product function
● I&M data
Yes; I&M0 to I&M3
● Isochronous mode
Yes
● Prioritized startup
Yes
Engineering with
● STEP 7 TIA Portal configurable/integrated from version
V13 SP1 / -
● STEP 7 configurable/integrated from version
V5.5 SP3 / -
● PROFIBUS from GSD version/GSD revision
V1.0 / V5.1
● PROFINET from GSD version/GSD revision
V2.3 / -
Operating mode
● DI
Yes
● Counter
Yes
● Oversampling
No
● MSI
Yes
Supply voltage
Rated value (DC)
24 V
permissible range, lower limit (DC)
19.2 V
permissible range, upper limit (DC)
28.8 V
Reverse polarity protection
Yes
Input current
Current consumption, max.
40 mA; 20 mA per group with 24 V DC supply
Power
Power available from the backplane bus
1.1 W
Power loss
Power loss, typ.
4.2 W
Digital inputs
Number of digital inputs
32
Digital inputs, parameterizable
Yes
Source/sink input
P-reading
Input characteristic curve in accordance with IEC 61131, type 3
Yes
Digital input functions, parameterizable
● Gate start/stop
Yes
● Freely usable digital input
Yes
● Counter
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© Copyright Siemens
— Number, max.
2
— Counting frequency, max.
6 kHz; FS04 and FW V2.2.1 or higher
— Counting width
32 bit
— Counting direction up/down
Up
Input voltage
● Rated value (DC)
24 V
● for signal "0"
-30 to +5 V
● for signal "1"
+11 to +30V
Input current
● for signal "1", typ.
2.5 mA
Input delay (for rated value of input voltage)
for standard inputs
— parameterizable
Yes; 0.05 / 0.1 / 0.4 / 1.6 / 3.2 / 12.8 / 20 ms
— at "0" to "1", min.
0.05 ms
— at "0" to "1", max.
20 ms
— at "1" to "0", min.
0.05 ms
— at "1" to "0", max.
20 ms
for interrupt inputs
— parameterizable
Yes
for technological functions
— parameterizable
Yes
Cable length
● shielded, max.
1 000 m
● unshielded, max.
600 m
Encoder
Connectable encoders
● 2-wire sensor
— permissible quiescent current (2-wire sensor), max.
Yes
1.5 mA
Isochronous mode
Filtering and processing time (TCI), min.
80 µs; At 50 μs filter time
Bus cycle time (TDP), min.
250 µs
Interrupts/diagnostics/status information
Diagnostics function
Yes
Alarms
● Diagnostic alarm
Yes
● Hardware interrupt
Yes
Diagnoses
● Monitoring the supply voltage
Yes
● Wire-break
Yes; to I < 350 µA
● Short-circuit
No
Diagnostics indication LED
● RUN LED
Yes; green LED
● ERROR LED
Yes; red LED
● Monitoring of the supply voltage (PWR-LED)
Yes; green LED
● Channel status display
Yes; green LED
● for channel diagnostics
Yes; red LED
● for module diagnostics
Yes; red LED
Potential separation
Potential separation channels
● between the channels
Yes
● between the channels, in groups of
16
● between the channels and backplane bus
Yes
● between the channels and the power supply of the
electronics
No
Isolation
Isolation tested with
707 V DC (type test)
Standards, approvals, certificates
Suitable for safety functions
No
product functions / security / header
data integrity
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5/15/2024
Subject to change without notice
© Copyright Siemens
Ambient conditions
Ambient temperature during operation
● horizontal installation, min.
-30 °C; From FS05
● horizontal installation, max.
60 °C
● vertical installation, min.
-30 °C; From FS05
● vertical installation, max.
40 °C
Altitude during operation relating to sea level
● Installation altitude above sea level, max.
5 000 m; Restrictions for installation altitudes > 2 000 m, see manual
Dimensions
Width
35 mm
Height
147 mm
Depth
129 mm
Weights
Weight, approx.
260 g
last modified:
3/12/2024
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5/15/2024
Subject to change without notice
© Copyright Siemens
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