![](/image/data/SIEMENS_Original/6ES7/621/6ES7621-1AD02-0AE3/6ES76211AD020AE3.jpg) |
SIMATIC C7-621, COMPACT UNIT WITH INTEGRATED COMPONENTS: S7-300 CPU, OP 3, IM 621, 16DI, 16DO, 4AI, 1AO |
Operator control and monitoring |
Password protection |
Yes |
Password levels |
9 |
Process images |
● Number of process images |
40 |
● Number of variables in message text, max. |
8 |
● Entries per process image |
20 |
Operating/fault messages |
● Number of lines |
2 |
● Number of characters per line |
20 |
● Character size |
5 mm |
● Operating messages, max. |
499 |
● Scroll operating messages, max. |
50 |
● Number of symbol/character sets |
1 |
Display |
Design of display |
LCD backlit |
dynamic objects |
Input, output, input/output fields, date/time fields, symbolic input/output fields |
Backlighting |
● MTBF backlighting (at 20 °C) |
100 000 h; about 11 years |
Control elements |
Keyboard fonts |
● Number of function keys |
0 |
● Number of softkeys |
5 |
Supply voltage |
24 V DC |
Yes |
permissible range, lower limit (DC) |
20.4 V |
permissible range, upper limit (DC) |
30.2 V |
Load voltage L+ |
● Rated value (DC) |
24 V |
● permissible range, lower limit (DC) |
20.4 V |
● permissible range, upper limit (DC) |
28.8 V |
Input current |
Current consumption, typ. |
0.3 mA |
Current consumption, max. |
1 A |
Power loss |
Power loss, typ. |
8 W |
Memory |
Work memory |
● integrated |
32 kbyte; 10 K instructions RAM (integrated) |
Load memory |
● integrated FEPROM, max. |
48 kbyte |
● integrated RAM, max. |
48 kbyte |
Backup |
● without battery |
Yes; 144 bytes: Parameterizable for bit memories, counters, data |
CPU processing times |
for bit operations, typ. |
0.3 µs |
for bit operations, max. |
0.6 µs |
for word operations, typ. |
1 µs |
for fixed point arithmetic, typ. |
2 µs |
for floating point arithmetic, typ. |
50 µs |
for timer/counter operations, typ. |
12 µs |
CPU-blocks |
DB |
● Number, max. |
127; DB 0 reserved |
FB |
● Number, max. |
128; see instruction list |
FC |
● Number, max. |
128; see instruction list |
OB |
● Number, max. |
see instruction list |
● Number of free cycle OBs |
1; OB 1 |
● Number of process alarm OBs |
1; OB 40 |
● Number of startup OBs |
1; OB 100 |
● Number of asynchronous error OBs |
7; OB 80, 81, 82, 85, 87, 121, 122 |
Nesting depth |
● per priority class |
8 |
Counters, timers and their retentivity |
S7 counter |
● Number |
64 |
of which retentive without battery |
— adjustable |
Yes |
— lower limit |
0 |
— upper limit |
31 |
Counting range |
— lower limit |
0 |
— upper limit |
999 |
S7 times |
● Number |
128 |
of which retentive without battery |
— adjustable |
Yes |
— lower limit |
0 |
— upper limit |
63 |
Time range |
— lower limit |
1 s |
— upper limit |
9 990 s |
Data areas and their retentivity |
Flag |
● Number, max. |
256 byte |
● Retentivity available |
Yes |
● of which retentive without battery |
0 to 1023 |
Address area |
I/O address area |
● Inputs |
78 kbyte |
● Outputs |
78 kbyte |
Process image |
● Inputs |
124 byte |
● Outputs |
124 byte |
Hardware configuration |
Number of modules per system, max. |
8; per ET 200M |
Number of modules per DP slave interface, max. |
8; 64 byte address space per DP-station |
connectable programming devices/PCs |
SIMATIC PG/PC, standard PC |
Number of DP masters |
● integrated |
0 |
● via CP |
1; CP 342-5 |
Number of operable FMs and CPs (recommended) |
● FM |
4 |
● CP, point-to-point |
2 |
● CP, LAN |
1 |
Expansion modules |
● Number of expansion modules, max. |
4 |
● Analog inputs/outputs, max. |
37 |
● Digital inputs/outputs, max. |
160 |
Rack |
● Rack, number of rows, max. |
1 |
Time of day |
Clock |
● Software clock |
Yes |
Digital inputs |
Number of digital inputs |
16 |
Input voltage |
● Rated value, DC |
24 V |
● for signal "0" |
-3 to +5 V |
● for signal "1" |
15 to 30 V |
Input current |
● for signal "1", typ. |
11.5 mA |
Input delay (for rated value of input voltage) |
for standard inputs |
— at "0" to "1", max. |
4.8 ms; typically 3 ms |
Cable length |
● Cable length, shielded, max. |
1 000 m |
● Cable length unshielded, max. |
600 m |
Digital outputs |
Number of digital outputs |
16 |
Short-circuit protection |
Yes; Clocked electronically |
Limitation of inductive shutdown voltage to |
48 V |
Switching capacity of the outputs |
● Lamp load, max. |
5 W |
Output voltage |
● for signal "1", min. |
L+ (-0.8 V) |
Output current |
● for signal "1" rated value |
0.5 A |
● for signal "1" minimum load current |
5 mA |
● for signal "0" residual current, max. |
0.5 mA |
Switching frequency |
● with resistive load, max. |
100 Hz |
● with inductive load, max. |
0.5 Hz |
Total current of the outputs (per group) |
all mounting positions |
— up to 20 °C, max. |
4 A |
— up to 40 °C, max. |
2 A |
Cable length |
● Cable length, shielded, max. |
1 000 m |
● Cable length unshielded, max. |
600 m |
Analog inputs |
Number of analog inputs |
4 |
permissible input voltage for voltage input (destruction limit), max. |
30 V |
permissible input current for current input (destruction limit), max. |
30 mA |
Input ranges |
● Voltage |
Yes |
● Current |
Yes |
Input ranges (rated values), voltages |
● -10 V to +10 V |
Yes |
● Input resistance (-10 V to +10 V) |
50 kΩ |
Input ranges (rated values), currents |
● -20 to +20 mA |
Yes |
● Input resistance (-20 to +20 mA) |
105.5 Ω |
Analog outputs |
Number of analog outputs |
1 |
Voltage output, short-circuit protection |
Yes |
Voltage output, short-circuit current, max. |
11 mA |
Current output, no-load voltage, max. |
15 V |
Cycle time (all channels) max. |
0.5 ms |
Output ranges, voltage |
● -10 to +10 V |
Yes |
Output ranges, current |
● -20 to +20 mA |
Yes |
Load impedance (in rated range of output) |
● with voltage outputs, min. |
2 kΩ |
● with voltage outputs, capacitive load, max. |
1 µF |
● with current outputs, max. |
0.5 kΩ |
● with current outputs, inductive load, max. |
1 mH |
Cable length |
● Cable length, shielded, max. |
100 m |
Analog value generation |
Integration and conversion time/resolution per channel |
● Resolution with overrange (bit including sign), max. |
12 bit |
● Conversion time (per channel) |
100 µs |
Settling time |
● for resistive load |
0.6 ms |
● for capacitive load |
3 ms |
● for inductive load |
0.5 ms |
Encoder |
Connectable encoders |
● 2-wire sensor |
Yes |
— permissible quiescent current (2-wire sensor), max. |
2 mA |
Errors/accuracies |
Operational error limit in overall temperature range |
● Voltage, relative to input area, (+/-) |
1 % |
● Current, relative to input area, (+/-) |
1 % |
● Voltage, relative to output area, (+/-) |
1 % |
● Current, relative to output area, (+/-) |
1 % |
Basic error limit (operational limit at 25 °C) |
● Voltage, relative to input area, (+/-) |
0.9 % |
● Current, relative to input area, (+/-) |
0.8 % |
● Voltage, relative to output area, (+/-) |
0.8 % |
● Current, relative to output area, (+/-) |
0.9 % |
Interfaces |
MPI |
● Cable length, max. |
9 100 m; without repeaters 50 m; with 2 repeaters: 1100 m; with 10 repeaters in series: 9100 m; via fiber optic cable: 23.8 km (with star hubs or OLMs) |
1. Interface |
Functionality |
● MPI |
Yes |
MPI |
● Number of nodes, max. |
32; PG/PC, OP, C7, S7-300/400, M7 |
● Transmission rate, max. |
187.5 kbit/s |
Communication functions |
PG/OP communication |
Yes |
Global data communication |
● supported |
Yes |
S7 basic communication |
● supported |
Yes |
S7 communication |
● S7 extended communication |
Yes; Server |
Number of connections |
● overall |
|
— of which dynamic |
4 |
— of which static |
4 |
Interrupts/diagnostics/status information |
Alarms |
● Diagnostic alarm |
No |
Diagnostic messages |
● Diagnostic functions |
Yes |
Galvanic isolation |
Galvanic isolation digital inputs |
● Galvanic isolation digital inputs |
No |
Galvanic isolation digital outputs |
● Galvanic isolation digital outputs |
No |
Galvanic isolation analog inputs |
● Galvanic isolation analog inputs |
No |
Galvanic isolation analog outputs |
● Galvanic isolation analog outputs |
No |
Isolation |
Isolation tested with |
500 V DC |
EMC |
Emission of radio interference acc. to EN 55 022 |
● Interference emission acc. to EN 55022, class B |
Yes; Noise emission: Class A / EN 55022; conducted interference: IEC 1000-4-4, IEC 1000-4-5; noise immunity: IEC 1000-4-2, IEC 1000-4-3, IEC 1000-4-4, IEC 1000-4-6, EN 50140 |
Degree and class of protection |
IP20 |
Yes; Housing |
IP65 |
Yes; Front |
Standards, approvals, certificates |
DIN/ISO 9001 |
Yes; Certification of production and development |
CSA approval |
Yes |
UL approval |
Yes; UL 508 |
FM approval |
Yes; FM-Standards No. 3611, 3600, 3810 Class I, Division 2, Group A, B, C, D |
developed in accordance with IEC 61131 |
Yes |
Ambient conditions |
Operating temperature |
● 45 degree installation, min. |
0 °C |
● 45 degree installation, max. |
45 °C; limited readability when vertically mounted |
● vertical installation, min. |
0 °C |
● vertical installation, max. |
50 °C |
Air pressure |
● permissible range, min. |
795 hPa |
● permissible range, max. |
1 080 hPa |
Relative humidity |
● Operation, min. |
5 % |
● Operation, max. |
95 %; RH class 2 in accordance with IEC 1131-2 |
Vibrations |
● Operation, tested according to IEC 60068-2-6 |
Yes; IEC 68, Part 2-6; 10 to 58 Hz; (constant amplitude 0.075 mm); 58 to 500 Hz; (constant acceleration 9.8 m/s2) |
Shock test |
● tested according to IEC 60068-2-29 |
Yes; IEC 68, Part 2-29 half-sine: 100 m/s2 (10 g), 16 ms, 100 shocks |
Configuration |
Configuration software |
● STEP 7 Lite |
Yes |
● ProTool |
Yes |
● ProTool/Lite |
Yes |
● ProTool/Pro |
Yes |
Programming |
● Command set |
see instruction list |
● Nesting levels |
8 |
● Program organization |
Linear, structured |
● System functions (SFC) |
see instruction list |
Programming language |
— SCL |
Yes |
Software libraries |
— Process diagnostics |
Yes; S7-CPU |
— Software controller |
Yes; 8 loops |
Know-how protection |
● User program protection/password protection |
Yes |
Cycle time monitoring |
● lower limit |
1 ms |
● upper limit |
6 000 ms |
● adjustable |
Yes |
● preset |
150 ms |
Languages |
Online languages |
● Number of online/runtime languages |
3 |
Dimensions |
Width |
168 mm |
Height |
120 mm |
Depth |
69 mm |
Mounting cutout/device depth (W x H x D) |
|
● Mounting cutout, width |
158.5 mm |
● Mounting cutout, height |
110.5 mm |
Weights |
Weight, approx. |
800 g |
last modified: |
31.07.2014 |