Home > Products > SIEMENS > SIMATIC S7 Series
|
Complete model
|
6ES7521-7EH00-0AB0
|
|
Product family
|
SIMATIC S7-1500 - SM 521 digital input modules
|
|
Product type
|
DI 16x24 to 125 V UC HF digital input module
|
|
Dimensions
|
35 x 147 x 129 mm
|
|
Weight
|
Approx. 240 g
|
|
Digital inputs
|
16, parameterizable, channels in groups of one
|
|
Rated input voltage
|
24 V, 48 V, or 125 V AC/DC
|
|
Signal 0 range
|
-5 to +5 V
|
|
Signal 1 range
|
+11 to +146 V
|
|
Input current
|
Typically 3 mA at signal 1 and 24 V DC
|
|
Input delay
|
0.05 to 20 ms parameterizable with DC; 20 ms fixed with AC
|
|
Input characteristic
|
IEC 61131 type 3 at 24 V DC
|
|
Counter function
|
Two counters on channels 0 and 1; maximum 6 kHz from FS04
|
|
Cable length
|
Shielded maximum 1000 m; unshielded maximum 600 m
|
|
Encoder support
|
2-wire sensor supported; maximum quiescent current 1.5 mA
|
|
Diagnostics
|
Wire-break diagnostics, diagnostic alarm, and hardware interrupt
|
|
Isolation
|
Channels isolated individually; tested with 2000 V DC
|
|
Power loss
|
Typically 2.2 W at 24 V DC; 6.0 W at 125 V AC
|
|
Operating temperature
|
Horizontal installation: -30 to 60 deg C from FS04; vertical installation: -30 to 40 deg C from FS04
|
|
Firmware and hardware
|
Firmware from V1.0.0; hardware functional status from FS01
|
|
Engineering software
|
TIA Portal V14 or higher
|
|
Connector
|
Front connector with screw or push-in terminals ordered separately
|
|
CONTACT
STELLA
|
|
High-voltage input range
Supports 24 V, 48 V, and 125 V AC or DC input signals.
|
Individual isolation
All 16 channels are potential-separated in groups of one.
|
|
Fast response
DC input delay is parameterizable from 0.05 to 20 ms.
|
Flexible engineering
Configuration is supported in TIA Portal V14 or higher.
|
|
Signal levels
Signal 0 is -5 to +5 V; signal 1 is +11 to +146 V.
|
Input current
Typical signal-1 current is 3 mA at 24 V DC.
|
|
Counter inputs
From FS04, channels 0 and 1 provide two 32-bit up counters to 6 kHz.
|
Cable length
Maximum length is 1000 m shielded or 600 m unshielded.
|
|
Wire break
Wire-break diagnostics respond below 550 microampere.
|
Status LEDs
Green channel LEDs show status; red LEDs show channel and module diagnostics.
|
|
Alarms
Diagnostic alarms and hardware interrupts are supported.
|
Potential separation
Channels are isolated from each other and from the backplane bus.
|
|
Horizontal installation
Permissible operating temperature is -30 to 60 deg C from FS04.
|
Vertical installation
Permissible operating temperature is -30 to 40 deg C from FS04.
|
|
Humidity capability
A minimum dew point of -60 deg C supports dry-room applications.
|
Installation altitude
Restrictions apply above 2000 m; follow the SIMATIC S7-1500 manual.
|
|
Q1. How can I verify the quoted item is exactly 6ES7521-7EH00-0AB0?
Match the full Siemens article number on the quotation, nameplate, and packaging. Confirm SM 521 DI 16x24 to 125 V UC HF, 16 isolated channels, 0.05 to 20 ms DC delay, and diagnostics.
|
|
Q2. How can I distinguish New, Used, or Refurbished condition?
Request current photos of the factory label, serial data, hardware status, terminal area, LEDs, housing, packaging, and separately supplied front connector if included. Require the offered condition in writing.
|
|
Q3. How can I check whether a supplier is legitimate and reliable?
Verify company registration, traceable address, matching bank beneficiary, business contact channels, and a formal quotation listing 6ES7521-7EH00-0AB0 in full with the stated condition.
|
|
Q4. Which specifications should an engineer verify before purchase?
Confirm 24, 48, or 125 V AC/DC input compatibility, channel isolation, input delay, counter and diagnostic requirements, connector type, 35 x 147 x 129 mm dimensions, 240 g weight, and temperature range.
|
|
Q5. What physical evidence should I request before payment?
Ask for dated photos or video showing the full 6ES7521-7EH00-0AB0 label, serial data, hardware status, 16-channel terminal area, module LEDs, housing condition, seals, packaging, and quantity.
|
|
Q6. Can a similar SM 521 suffix replace this model?
Do not assume interchangeability. A different suffix can change channel count, rated voltage, isolation, input delay, diagnostics, counter functions, connector requirements, dimensions, and engineering compatibility.
|
|
EIR308
|
HD-RX-201-CE
|
3031-622-7/AA
|
|
ABB GHQ6050061R001
|
60-865-03
|
70-314-21 MAAP (1)RJ45
|
|
AX82
|
3VT1792-2EJ46-0AA0
|
41249-00
|
|
AV5115DNv1
|
DXR2.M12P-102A
|
FR-7N3101P
|
|
BC-35
|
AIP602-S2
|
IC660TBD024N IC660EBD024X1
|
|
MS-VMA1630-1
|
70124109 KFD2-STC5-Ex1
|
DSX-PLA004
|
|
ABB TB521-ETH 1SAP312100R0270
|
972LX IS23DI0XCD000
|
1756-CNBR
|
|
Allen Bradley 100-E116 /A
|
PP-100-W
|
GJR2242000R1 LR370A-E 9083/031
|
|
A970GOT-LBA
|
IS50-CHV10SX
|
RM7823A1016 RM7823A
|
|
SDL200
|
MNL-13RF3
|
QUINT-DIODE/12-24DC/2x20/1x40
|
|
GC80
|
SIO12000
|
EDS-316-T 3093000000881
|
|
00EP016
|
6ES7650-1BD51-0XX0
|
216690 HIC2822
|
|
6ES7421-7BH01-0AB0
|
BZME1-A25-BT
|
2200-49780-019
|
|
DIN-4DIMFLV4
|
K-EF234L03E
|
60-659-11
|
|
5504GI
|
50080121-001
|
CC-PDIL01 51405040-175
|
|
5SX9100
|
077-05FA-LSSN-C6
|
OLS120
|
|
GE M2000 M2PBMPP
|
CDH4U5-BDALI
|
SXWRCF12B10001 RP-C-12B-F-24V
|
|
163 18 NH100
|
PQ3541
|
ETU27
|
|
RS232 7XV5652-0BA00/BB
|
86827-01 3300/16-03-01-00-01-01-01
|
MCLTEB0008503100
|
|
HR3D28KUTC3BB
|
5975-1001-9082
|
MTN648493
|
EN
